BGP

Layer 3 Management > BGP > BGP Context

• AS Number—enter the local AS number (ASN). The default value is 1.
  Note:

  This field can be configured only if the state of the BGP system is set as Disabled in the Basic Settings screen.

  Note: When four-byte ASN is enabled, this value ranges from 1 to 4294967295.
  Note:

  When four-byte ASN is disabled, this value ranges from 1 to 65535.

  Note:

  Four-byte ASN can be enabled/disabled using Layer 3 Management > BGP > BGP Basic Settings screen.

• BGP Context—default.
• BGP State—select the status of the BGP system:
  • Enabled—enables the BGP system.
  • Disabled—disables the BGP system.

• Add—adds and saves new configuration.

Layer 3 Management > BGP > BGP Settings

• Select—select the Cluster ID for which the configurations need to be modified.
• Cluster ID—enter the Cluster ID of the Router Reflector of the BGP cluster which has more than one route reflector. By default, when the BGP speaker acts as Route Reflector, the BGP Identifier is used as the cluster ID. To increase redundancy and avoid a single point of failure, a cluster might have more than one route reflector. In this case, all route reflectors in the cluster must be configured with the 4-byte cluster ID so that a route reflector can recognize updates from route reflectors in the same cluster.
• BGP Next Hop Processing Interval—enter the interval at which next hops are monitored for reachability. This value ranges from 1 to 120. The default value is 60.
• Default Metric—enter the default metric value for the IGP routes and static route. If configured to 0, the metric received from the IGP route will be used. If configured to other value, the MED value of the redistributed routes takes this value. This value has no effect on direct routes. This value ranges from 1 to 2147483647. The default value is 0.
• Admin Status—select the admin status of BGP. The default option is Disable. The list contains:
  • Enabled—enables the BGP system.
  • Disabled—disables the BGP system.
• Capability Support—select the Capability Advertisement Support status. The default option is True. The list contains:
  • True—enables Capability Advertisement Support.
  • Disabled—disables the BGP system.
  EBGP Multipath Count—enter the maximum number of external BGP (EBGP) multipath routes to be added per destination network in the routing table. This value ranges from 1 to 64.
• IBGP Multipath Count—enter the maximum number of IBGP multipath routes to be added per destination network in the routing table. This value ranges from 1 to 64.
• EIBGP Multipath Count—enter the maximum number of external plus internal BGP (EIBGP) multipath routes (with same AS PATH) to be added per destination network in Routing table. This value ranges from 1 to 64.
• Table version—displays the table version which is the total number of valid routes learnt in the system. This is an integer value which is incremented by 1 when a valid route is learnt.
• Context Id—0.

• Add—adds and saves new configuration.

Layer 3 Management > BGP > Neighbors

• Select—select the neighbor for which the configurations need to be modified.
• Peer Address—enter the remote IP address of the BGP peer.
  Note:

  For a peer address with external AS, route reflector client cannot be set as Client.

• Remote AS—enter the remote ASN of the peer. This value ranges from 1 to 4294967295.
  Note:

  The admin status of the peer can be made up only if this field is configured for a valid ASN.

  Note:

  When four-byte ASN is enabled, this value ranges from 1 to 4294967295.

  Note:

  When four-byte ASN is disabled, this value ranges from 1 to 65535.

  Note:

  Four-byte ASN can be enabled/disabled using Layer3 Management > BGP > Basic Setting>BGP Basic settings screen.

• Configured BGP Maximum Prefix Limit—enter the prefix limit value to set upper bound on the number of address prefixes to be accepted by BGP speaker from a neighbor. The system will not process the prefixes exceeding the upper limit. This value ranges from 1 to 2147483647. The default value is 100.
  Note:

  The default value is calculated based on the following formula: Maximum number of routes in the routing table / Maximum number of peers supported by BGP.

• Configured Connect Retry Count—enter the retry count to specify the maximum number of times a BGP peer should try for issuing a TCP-Connect with its neighboring peers. This value ranges from 1 to 50. The default value is 5.
• Automatic Start—select the automatic start status for the BGP session with the associated peer. The automatic start will not occur, if the IdleHold timer value of the peer exceeds its maximum threshold value. The default option is Disable. The list contains:
  • Disable—disables automatic initiation of the BGP session with the peer for starting the peer status.
  • Enable—enables automatic starting of peer session from the idle state after peer idle hold time once the BGP peer session is brought down either by the following:
    • Automatic stop feature
    • Reception of invalid BGP message

• Automatic Stop—select the automatic stop status for the BGP connection with the associated peer. The default option is Disable. The list contains:
  • Disable—disables automatic stopping of BGP connection with the associated peer, as the connect retry count will be set as 0.
  • Enable—enables automatic stopping of BGP connection with the associated peer after the BGP peer attains configured maximum number of TCP connect retry count value. The allocated resources are released, and the peer remains in idle state. The peer session initiation is once again started based on the automatic start status, peer idle hold timer and damp peer oscillation status.
• Damp Peer Oscillations—select the damp peer oscillation status that controls the usage of additional logic to dampen peer oscillations in states other than established. The default option is Disable. The list contains:
  • Disable—disables utilization of any logic to dampen the oscillations of BGP peers by BGP connection (disables peer connection damping).
  • Enable—utilization additional logic to dampen the oscillations of BGP peers by BGP connection during a series of automatic start and stop operations in the IDLE state. For each successive damp oscillations, the current idle hold timer value will be increased twice its previous value. This happens through internal logic.
• Delay OPEN—select the delay open status that controls the option to apply delay in sending of open messages. The open message is the initial message sent by the BGP peers after establishing a TCP connection to open a BGP session between them. The default option is Disable. The list contains:
  • Disable—disables the delay option for sending open messages, which implies that open messages are sent to the remote BGP peer without any delay.
  • Enable—delay in sending open messages to the remote BGP peer for a configured open delay time period. This delay allows the remote peer to send the first open message.

• EBGP MultiHop—select the EBGP MultiHop option which enables/disables the BGP4 speaker to establish connections to external peers residing on network that are not directly connected. The default option is Disable. The list contains:
  • Disable—disables BGP to establish connection with external peers residing on networks that are not directly connected. If EBGP MultiHop is disabled and external BGP peers are indirectly connected, then BGP peer session will not be established.
  • Enable—enables BGP to establish connection with external peers residing on networks that are not directly connected. If external BGP peer are not connected directly, then EBGP MultiHop is enabled to initiate the connection with that external peer.
  Note:

  This field is applicable only for the directly connected EBGP peers and not applicable for the internal peers.

• Next Hop—whether the next hop attribute sent in the update message to the peer has to be generated automatically or self. This is useful in non-meshed networks where BGP neighbors may not have direct access to all other neighbors on the same IP subnet. The default option is automatic. The list contains:
  • automatic—generates the next hop based on the IP address of the destination and the present next hop in the route information.
  • self—sets the sender local address as the next hop attribute.
• Source Address—enter the address to be used as the source address for the TCP session initiated with the peer.
  Note:

  The configured peer address is set as the source address, if no value is configured for the source address

• Gateway Address—enter the gateway router’s address to be used as NextHop in the routes advertised to the peer.
• Default originate—select he status of the advertisement of the default route to the peer or neighbor for use as a default route. The default option is Disable. The list contains:
  • Disable—disables the advertisement of the default route.
  • Enable—enables the advertisement of the default route.
  Note:

  This field overrides the global default route configuration and always sends a default route to the peer with self next-hop. This advertisement occurs irrespective of the presence of default route in FDB.

• Community Send status—select the status of the send community attribute to a BGP neighbor. The default option is send. The list contains:
  • none—sets Community Send status as none.
  • send—sends community attribute to a BGP neighbor and enables advertisement of community attributes (standard/extended) to peer
  • dontSend—disables advertisement of standard community attributes to peer the advertisement of the default route.
• Extended Community Send status—select the status of extended community send attribute of the BGP peer. The BGP extended community is used to label BGP routing information for controlling the distribution of the information. The default option is send. The list contains:
  • none—sets extended Community Send status as none.
  • send—sends extended community attribute to a BGP neighbor and enables advertisement of community attributes (standard/extended) to peer
  • dontSend—disables advertisement of standard community attributes to peer the advertisement of the default route.
• Route Reflector Client—the Route Reflector Client status of the peer. This status is used to define client and non-client peers for implementing route reflection. The default option is nonClient. The list contains:
  • nonClient—Configures the peer as non-client peer, which denotes that the peer is outside the cluster
  • Client—Configures the peer as client peer, which denotes that the peer is within the clustr.

  The route reflection mechanism operates as follows:

  • A cluster system acting as route reflector sends a route to all client peers within the cluster, if the route is received from a nonclient peer.
  • The cluster system acting as route reflector sends a route to all nonclient peers and all client peers except the originator, if the route is received from a client peer.
  Peer Connection passive—select the BGP peer connection status to control the initiation of session from remote peer or speaker. The default option is Enable. The list contains:
  • Enable—sets the peer connection as passive. BGP speaker waits for the remote peer to initiate the session with the peer.
  • Disable—sets the peer connection as active. BGP speaker initiates the session with the peer.

• TCP Send Buffer Size—enter the TCP send window buffer size. This value ranges from 4096 to 65536. The default value is 65536.
• TCP Receive Buffer Size—enter the TCP Receive window buffer size. This value ranges from 4096 to 65536. The default value is 65536.
• EBGP Hop Limit—enter the maximum hop limit value that is used during connection with external peers. This value does not have any effect on connection with internal peers. This value ranges from 1 to 255. The default value is 1.
  Note:

  BGP speaker accepts or attempts connection to external peers residing on network that are not directly connected but separated by the configured hop limit value.

• Authentication—select the desired authentication mode for the BGP connection. The default option is None. The list contains:
  • None—indicates no authentication is set.
  • MD5—sets authentication type as Message Digest 5 (MD5) where authentication is set on a TCP connection between two BGP peers where each segment sent on the TCP connection between the peers is verified.
  • TCP-AO—indicates TCP-AO configurations for the specified BGP Peer.
• Password—enter the TCP MD5 Authentication Password that has to be sent with all TCP packets originated from the peer. This value is a string of maximum size 80.
  Note:

  This field is enabled only when Authentication type is set as MD5

• TCP-AO MKT—enter the TCP-AO MKT key-id which needs to be associated with this peer. This value’s range is from 0 to 255.
  Note:

  This field is enabled only when Authentication type is set as TCP AO.

  Note:

  This value should be the MKT id created using the Layer3 Management > BGP > TCP-AO Authentication > TCP-AO MKT Configuration screen

• Peer Status—select the desired state of the BGP peer connection. This is used to manually start or stop a BGP peer connection. The default option is start. The list contains:
  • stop—generates BGP stop event to manually stop the BGP session with the peer. The BGP stop event is automatically generated:
    • once the automatic stop feature is enabled and
    • the peer idle hold time exceeds its maximum threshold value.
  • start—generates BGP start event to manually initiate the BGP session with the peer. The BGP start event is generated only after configured peer idle hold time. The manual start is required for the peers damped using damp peer oscillation feature. The BGP start event is automatically generated after peer idle hold time to start BGP session in idle state when
    • Automatic start feature is enabled, and
    • BGP session is brought down either by automatic stop feature or through reception of invalid BGP message.
  Note:

  The peer status is internally set as auto-start when automatic start feature is enabled.

• BFD Monitoring—select the BFD monitoring status for the BGP peer. The default value is set as disable. The list contains:
  • Disable—specifies that BFD monitoring is disabled. The BGP deregisters with BFD if it is already registered.
  • Enable—specifies that BFD monitoring is enabled. When enabled, BGP will register with BFD for IP path monitoring when the session state becomes Established.
• VRF Name—default.

• Add—adds and saves new configuration.
• Reset—resets to default value for respective fields and discards all user inputs.
• Apply—modifies attributes for the selected entry and saves the changes.
• Delete—deletes the selected entry.

Layer 3 Management > BGP > Multi-Exit Discriminators

• Select—select the MED entry for which the configurations need to be modified.
• MED ID—enter the MED Index value which is the index value of the BGP MED Table. This value ranges from 1 to 100.
• Remote AS—enter the remote ASN with which BGP MED is to be associated. This value ranges from 0 to 4294967295. The default value is 0.
  Note:

  When four-byte-ASN is enabled, this value ranges from 0 to 4294967295.

  Note:

  When four-byte-ASN is disabled, this value ranges from 0 to 65535.

  Note:

  Four-byte ASN can be enabled/disabled using Layer3 Management > BGP > Basic Setting> BGP Basic settings screen

• Address Family / AFI—select the type of IP address prefix in the NLRI field in the update. The list contain:
  • ipv4—sets the type of IP address prefix as IP version 4.
  • ipv6—sets the type of IP address prefix as IP version 6.
  Note:

  This field should be configured before configuring the IP Address Prefix.

• Sub-Address Family / SAFI—select the sub-sequent address family of IP address prefix in the NLRI field in the update. The default option is unicast. The list contains:
  • unicast—sets the sub-sequent address family of IP address prefix as unicast.
  • labelledIpv4—sets the sub-sequent address family of IP address prefix as labeled IP version 4.
  • vpnv4—sets the sub-sequent address family of IP address prefix as VPN version 4.
  Note:

  This field should be configured before configuring the IP Address Prefix.

• IP Address Prefix—enter the IP address prefix in the NLRI field on which local-preference policy needs to be applied.
• IP Address Prefix Length—enter the length (in bits) of the IP address prefix in the NLRI field. This value ranges from 0 to 32 bits. The default value is 0.

• Intermediate AS—enter a list of intermediate AS numbers through which the route update is expected to travel. This is a comma separated list of AS numbers that are to be checked against the AS_PATH attribute of the updates. This value is a string of maximum size 100.
• Direction—select the direction of application of the MED Policy. The default option is In. The list contains:
  • In—indicates the updates on the received routes
  • Out—indicates the updates that needs to be advertised to peers on the route
• Value—enter the MED value assigned to the MED attribute for the route present in NLRI. This value ranges from 0 to 2147483647. The default value is 0.
• Preference—select the preference status which denotes whether the value present in this entry takes precedence when the attribute is already present in the update message that has been received. The default option is False. The list contains:
  • True—indicates that the value present in this entry takes precedence when the attribute is already present in the update message that has been received
  • False—indicates that the value present in this entry does not take precedence
• Status—select the preference status which denotes whether the value present in this entry takes precedence when the attribute is already present in the update message that has been received. The default option is False. The list contains:
  • Up—sets MED Status as UP.
  • Down—sets MED Status as Down.
• VRF Name / Context Name—default.

• Add—adds and saves new configuration.
• Reset—resets to default value for respective fields and discards all user inputs.
• Apply—modifies attributes for the selected entry and saves the changes.

Layer 3 Management > BGP > Local Preferences

• Select—select the Local Preference Identifier entry for which the configurations need to be modified (this is a radio button in the first column of the table).
• Local preference ID—enter t Local Preference ID for the route This value ranges from 1 to 100.
• Remote AS—enter the enter the Remote ASN that identifies the BGP router to other routers and tags the routing information passed along. This value ranges from 0 to 4294967295. The default value is 0.
  Note:

  When four-byte-ASN is enabled, this value ranges from 0 to 429496729.

  Note:

  When four-byte-ASN is disabled, this value ranges from 0 to 65535.

  Note:

  Four Byte ASN can be enabled/disabled using Layer3 Management > BGP > Basic Setting > BGP Basic settings screen.

• Address Family / AFI—select the type of IP address prefix in the NLRI field in the update. The list contain:
  • ipv4—sets the type of IP address prefix as IP version 4.
  • ipv6—sets the type of IP address prefix as IP version 6.
  Note:

  This field should be configured before configuring the IP Address Prefix.

• Sub-Address Family / SAFI—select the sub-sequent address family of IP address prefix in the NLRI field in the update. The default option is unicast. The list contains:
  • unknown—sets the sub-sequent address family of IP address prefix as unknown which implies that any sub-sequent address family can be used for IP address prefix.
  • unicast—sets the sub-sequent address family of IP address prefix as unicast.
  • labelledIpv4—sets the sub-sequent address family of IP address prefix as labeled IP version 4.
  • vpnv4—sets the sub-sequent address family of IP address prefix as VPN version 4.
  Note:

  This field should be configured before configuring the IP Address Prefix.

• IP Address—enter the IP address prefix in the NLRI field. The default value is 0.0.0.0.
• IP Address Prefix Length / Prefix Length—enter length (in bits) of the IP address prefix in the NLRI field. This value ranges from 0 to 32 bits for ipv4 address and 0 to 128 for ipv6 address type. By default, IP Address Prefix Length is set as 0 bits.

• Intermediate AS—enter a list of intermediate Autonomous system numbers through which the route update is expected to travel. This is a comma separated list of ASNs that are to be checked against the AS_PATH attribute of the updates. This value is a string of maximum size 10.
• Direction—select the direction of application of the Local Preference Policy with which the entry is to be associated. The default option is In. The list contains:
  • In—indicates the updates on the received routes.
  • Out—indicates the updates that needs to be advertised to peers on the route
• Value—enter the value assigned to the LP (Local Preference) Attribute for the route present in NLRI. This value ranges from 0 to 2147483647. The default value is 100.
• Preference—select the preference status which denotes whether the value present in this entry takes precedence when the attribute is already present in the update message that has been received. The default option is false. The list contains:
  • True—indicates that the value present in this entry takes precedence when the attribute is already present in the update message that has been received.
  • False—indicates that the value present in this entry does not take precedence
• Status—select the status of the Local Preference routes learnt by BGP peers. The default option is Down. The list contains:
  • Up—sets Local Preference Status as UP.
  • Down—sets Local Preference Status as Down.
• VRF Name / Context Name—default.

• Add—adds and saves new configuration.
• Reset—resets to default value for respective fields and discards all user inputs.
• Apply—modifies attributes for the selected entry and saves the changes.

Layer 3 Management > BGP > Filters

• Select—select the Filter Identifier entry for which the configurations need to be modified (this is a radio button in the first column of the table).
• Filter ID—enter the filter index. This value ranges from 1 to 100.
• Remote AS—enter the remote ASN that identifies the BGP router to other routers and tags the routing information passed along. This value ranges from 0 to 4294967295. The default value is 0.
  Note:

  When four-byte-ASN is enabled, this value ranges from 0 to 429496729.

  Note:

  When four-byte-ASN is disabled, this value ranges from 0 to 65535.

  Note:

  Four byte ASN can be enabled/disabled using Layer3 Management > BGP > Basic Setting>BGP Basic settings screen.

• Address Family / AFI—select the type of IP address prefix in the NLRI field in the update. The list contain:
  • ipv4—sets the type of IP address prefix as IP version 4.
  • ipv6—sets the type of IP address prefix as IP version 6.
  Note:

  This field should be configured before configuring the IP Address Prefix.

• Sub-Address Family / SAFI—select the sub-sequent address family of IP address prefix in the NLRI field in the update. The default option is unicast. The list contains:
  • unknown—sets the sub-sequent address family of IP address prefix as unknown which implies that any sub-sequent address family can be used for IP address prefix.
  • unicast—sets the sub-sequent address family of IP address prefix as unicast.
  • labelledIpv4—sets the sub-sequent address family of IP address prefix as labeled IP version 4.
  • vpnv4—sets the sub-sequent address family of IP address prefix as VPN version 4.
  Note:

  This field should be configured before configuring the IP Address Prefix.

• IP Address—enter the IP address prefix in the NLRI field. The default value is 0.0.0.0.
• IP Address Prefix Length / Prefix Length—enter length (in bits) of the IP address prefix in the NLRI field. This value ranges from 0 to 32 bits for ipv4 address and 0 to 128 for ipv6 address type. By default, IP Address Prefix Length is set as 0 bits.

• Intermediate AS—enter a list of intermediate AS numbers through which the route update is expected to travel. This is a comma separated list of AS numbers that are to be checked against the AS_PATH attribute of the updates. This value is a string of maximum size 10.
• Direction—select the direction of application of filters with which the entry is to be associated. The default option is In. The list contains:
  • In—indicates the updates on the received routes
  • Out—indicates the updates that needs to be advertised to peers on the route
• Action—select the status that controls addition or deletion of the non bgp routes. The default option is Deny. The list contains:
  • Allow—allows addition of non-BGP routes.
  • Deny—denies addition of non-BGP routes.
• Status—select the status of the routes learnt by BGP peers. The default option is Down. The list contains:
  • Up—sets BGP Filter Status as UP
  • Down—sets BGP filter Status as Down.
• VRF Name / Context Name—default.

• Add—adds and saves new configuration.
• Reset—resets to default value for respective fields and discards all user inputs.
• Apply—modifies attributes for the selected entry and saves the changes.

Layer 3 Management > BGP > Route Aggregation

• Select—select the neighbor for which the configurations need to be reapplied.
• ID—enter the index to BGP Route Aggregation table. This value ranges from 1 to 100.
• Address Family / AFI—select the type of IP address prefix in the NLRI field in the update. The list contain:
  • ipv4—sets the type of IP address prefix as IP version 4.
  • ipv6—sets the type of IP address prefix as IP version 6.
  Note:

  This field should be configured before configuring the IP Address Prefix.

• Sub-Address Family / SAFI—select the sub-sequent address family of IP address prefix in the NLRI field in the update. The default option is unicast. The list contains:
  • unknown—sets the sub-sequent address family of IP address prefix as unknown which implies that any sub-sequent address family can be used for IP address prefix.
  • unicast—sets the sub-sequent address family of IP address prefix as unicast.
  • labelledIpv4—sets the sub-sequent address family of IP address prefix as labeled IP version 4.
  • vpnv4—sets the sub-sequent address family of IP address prefix as VPN version 4.
  Note:

  This field should be configured before configuring the IP Address Prefix.

• IP Address—enter the IP address prefix in the NLRI field.
• IP Address Prefix Length / Prefix Length—enter the length (in bits) of the IP address prefix in the NLRI field. This value ranges from 0 to 32 for ipv4 address and 0 to 128 bits for ipv6 address.
• Route Advertise—select the route updates that should be sent to the peers. The default option is Summary-only. The list contains:
  • Summary Only—indicates that only the summarized route has to be advertised to peers.
  • All—indicates that both the summary and the more-specific routes based on which the summary entry was generated, have to be advertised to the peers.

• As-Set—select the generation status of autonomous system set path information. The default option is Disable. The list contains
  • Enable—enables the generation of AS set path information.
  • Disable—disables the generation of AS set path information.
• Suppress-Map—enter the name for suppress route-map. The route map contains the rules for suppressing the routes while aggregation. When suppress-map configuration is used along with summary-only option, summary-only configuration does not have any effect. And the more-specific routes that the suppress-map suppresses are not advertised. Other routes are advertised in addition to the aggregated route This value is a string of maximum size 20.
• Advertise-Map—enter the name for advertise route-map. The route map contains the rules for advertising the routes during aggregation. When advertise-map is used, only advertise-map influences the creation of aggregate entry. In absence of advertise-map, the aggregate route inherits the attributes of the more specific routes, both suppressed and unsuppressed. This value is a string of maximum size 20.
• VRF Name / Context Name—default.

• Add—adds and saves new configuration.
• Reset—resets to default value for respective fields and discards all user inputs.
• Apply—modifies attributes for the selected entry and saves the changes.

Layer 3 Management > BGP > Timer

• Address Type—displays the address type of the remote peer. This is a read-only field. The type can be:
  • ipv4—denotes the remote peer IP address type as IP version 4.
  • ipv6—denotes the remote peer IP address type as IP version 6.
• Ip Address—displays the IP address of the BGP peer; a read-only field.
• Keep Alive—enter the maximum time interval between successive keepalive messages exchanged between two peers. This value ranges from 0 to 21845 seconds. The optimal value is 30 seconds.
  Note:

  Periodical KEEPALIVE messages will be sent to the peer after the BGP connection is established.

• Hold time—enter the timer interval that a BGP will wait, before it decides that a connection to the peer is to be turned down. The system declares a peer as dead, after ensuring that a keepalive message is not received within this time period from the peer. This value ranges from 3 to 65535 seconds or 0. The optimal value is 90.
• Route Advertisement interval—enter the minimum interval between router advertisements (in seconds). This value ranges from 1 to 65535 seconds. The optimal value is 30 seconds. This is a read-only field.
• Min As Origination interval—enter minimum time between advertisements of changes within the speaker’s AS (in seconds). This value ranges from 1 to 65535 seconds. The default value is 15.
• Connect retry interval—enter the time (in seconds) for waiting before the router attempts to reconnect with the BGP neighbor after failing to connect. This value ranges from 1 to 65535 seconds. The default value is 120.
• Idle Hold interval—enter the time interval during which the BGP peer is held in idle state prior to the next automatic restart. This value ranges from 1 to 65535 seconds. The default value is 60. For each successive damp oscillations, the current IdleHold time value will be increased twice its previous value. This will happen through internal logic.
  The IdleHold Interval can be configured if either:

  • Automatic start feature is enabled, or
  • Damp peer oscillation feature is enabled

  Note:

  If both damp peer oscillation and automatic start features are disabled, the existing value is always set instead of the newly configured value.

• Delay Open interval—enter the amount of time the BGP peer should postpone sending open message to the remote peer. This delay allows the remote peer to send the first open message. This value ranges from 0 to 65535 seconds. The default value is 0 seconds.
  Note:

  This time can be configured only if the Delay Open status is set as enabled. Otherwise, the existing value is always set instead of the newly configured value.

• Context Name—default.

• Apply—modifies attributes for the selected entry and saves the changes.

Layer 3 Management > BGP > GR Settings

• GR Admin Status—select the GR capability status in the BGP speaker. The default option is Disabled. The list contains:
  • Enabled—enables the GR capability in the BGP speaker.
  • Disabled—disables the GR capability in the BGP speaker.
  Note:

  To set the GR parameters, the BGP GR admin status should be disabled.

• Restart Time—enter the time, in seconds, for the BGP session to be re-established after a restart. The default value should be less than or equal to Hold Time carried in open message. This value ranges from 1 to 4096 seconds. The default value is 90 seconds.
• Selection Deferral timer Value—enter the upper limit time until which a router defers its route selection. This timer value should be large enough for providing all peers of the Restarting Speaker with enough time to send all routes to the Restarting Speaker. This value ranges from 60 to 1800 seconds. The default value is 60.
• Stale Timer Interval—enter the time, in seconds, for the BGP session to be re-established after a restart. The default value should be less than or equal to Hold Time carried in open message. This value ranges from 1 to 4096 seconds. The default value is 90 seconds.
• Restart support—select the router support for the BGP graceful restart feature. The default option is None. The list contains:
  • None—sets Restart Support as None which implies that Restart support is not provided for the Graceful Restart feature.
  • Planned—sets Restart Support as Planned.
  • Both—sets Restart Support as both planned and unplanned.
• Restart Reason—select the router restart reason code of the BGP graceful restart feature. The default option is Software restart. The list contains:
  • Unknown—sets Restart Reason as unknown e.g. this code is to be used when a system restarts due to unplanned events (restarting after a crash).
  • Software restart—sets Restart Reason as Software restart; this is to be used where a system restarts due to software restart.
  • Software upgrade—sets restart reason as software upgrade; to be used where a system restarts due to reloading / upgrading of software.

• Apply—modifies attributes for the selected entry and saves the changes.
• Reset—resets to default value for respective fields and discards all user inputs.

Layer 3 Management > BGP > TCP-AO Authentication

• Select—select the neighbor for which the configurations need to be modified.
• KEY-ID—enter the local ASN. This value ranges from 1 to 4294967295. The default value is 1.
• Receive-Key-ID—enter the Receive Key-id of the MKT. The MKT that is ready at the sender to be used to authenticate received segments is indicated to the peer by filling the receive key id of the MKT of the TCP-AO OPTION in the TCP header. This value ranges from 0 to 255.
• Crypto Algorithm—select the crypto Algorithm used for TCP-AO (Authentication Option Master Key Tuple) in the specified BGP instance. MAC or KDF calculation. TCP-AO uses cryptographic algorithms to convert MKTs, which can be shared across connections into unique traffic keys for each connection. These are called Key Derivation Functions (KDFs) and are specified in RFC5926. The default option is hmac-sha-1. The list contains:
  • HMAC-SHA-1—sets algorithm type as HMAC-SHA-1.
  • AES-128—sets algorithm type as AES-128.

• Password—enter the password/ Master Key corresponding to the MKT. This is an octet string value with the maximum size 80
• TCP-OPTIONS—sets the exclude TCP option which excludes the options other than TCP-AO during MAC calculation. If this is not set, TCP-AO MAC will be calculated on TCP segment including all other TCP options.
  • Exclude –excludes TCP options other than TCP-AO during MAC calculation.
  • Include—includes all TCP options; while calculating TCP-AO, MAC will be calculated on TCP segment including all other TCP options.
• VRF Name / Context Name—default.

• Add—adds and saves new configuration.
• Reset—resets to default value for respective fields and discards all user inputs.
• Apply—modifies attributes for the selected entry and saves the changes.
• Delete—deletes the selected entry.

Layer 3 Management > BGP (cont.) > Peer Group 1

• Select—select the neighbor for which the configurations need to be modified.
• Peer Group Name—enter the Peer Group Name for configuring BGP peer group. The members of this peer group will inherit the characteristics configured with this screen. This value is a string of maximum size 20.
  Note:

  For Peer Address with external AS, route reflector client cannot be set as Client.

• Remote AS—enter the Remote ASN associated with the BGP peer group. This value ranges from 1 to 4294967295.
  Note:

  When four-byte ASN is enabled, this value ranges from 1 to 4294967295.

  Note:

  When four-byte ASN is disabled, this value ranges from 1 to 65535.

  Note:

  Four-byte ASN can be enabled/disabled using Layer3 Management > BGP > Basic Setting > BGP Basic settings screen.

• Hold time—enter the timer interval for the Hold Time configured for the BGP speaker with all peers configured for this peer group. This value is placed in an OPEN message sent to the peers by the BGP speaker. This value ranges from 3 to 65535 seconds or can be configured as zero. If it is configured as 0, the Hold Time will be not established with the peer. The default value is 90 seconds.
• Keep Alive Time—enter the Keep Alive Time (in seconds) for the BGP speaker with all peers configured for this peer group. The value of this object will only determine the KEEPALIVE messages frequency relative to the Hold Time. The keep-alive value must always be less than the configured hold-time value A reasonable maximum value for this timer is one third of the Hold Time value. If this value is zero (0), no periodical KEEPALIVE messages are sent to the peers after the BGP connection is established. This value ranges from 1 to 21845 seconds. The default value is 30.
• Connect Retry Interval—enter the Connect Retry Interval (in seconds) for the peers in this peer group. This is the time interval after which a transport connection with a peer is re-initiated. This value ranges from 1 to 65535 seconds. The default value is 30.
• Min AS Originator Interval—enter the AS Originator Interval for the peers in this peer group. This is the time-interval (in seconds) for spacing successive route-updates originating within the same AS. The default value is 15 seconds.

• Min Route Advertisement Interval—enter the Min Route Advertisement Interval for the peers in this peer group. This is the time-interval (in seconds) for spacing advertisement of successive external route-updates to the same destination. This value ranges from 1 to 65535 seconds. The default value is 30 seconds for EBGP connections and 5 seconds for IBGP connections.
• Automatic Start—select the Automatic Start status for the BGP session with the associated peers in the peer group. The default option is Disable. The list contains:
  • Disable—disables the BGP session with the associated peer automatically. The BGP session with the peer has to be manually initiated.
  • Enable—starts the BGP session with the associated peer automatically. The peer session is automatically started in idle state, after a BGP Peer session is brought down either by Auto stop or through reception of invalid BGP message. The BGP session is automatically started after an interval specified by idle hold timer.
• Automatic Stop—select the status to enable/disable the auto stop option for stopping the BGP peer and BGP connection automatically. The default option is Disable. The list contains:
  • Disable—disables the BGP session with the associated peer automatically. When Automatic Stop is disabled, the Connect Retry Count Value is set to 0.
  • Enable—stops the BGP session with the associated peer automatically. After an automatic stop, the peer connection needs to be re-initiated manually by the administrator.
• IdleHold interval—enter the time interval during which the BGP peer is held in idle state prior to the next automatic restart. This value ranges from 1 to 65535 seconds. The default value is 60.
  The IdleHold Interval can be configured if either:

  • Automatic start feature is enabled, or
  • Damp peer oscillation feature is enabled

  Note:

  If both damp peer oscillation and automatic start features are disabled, the existing value is always set instead of the newly configured value.

• Damp Peer Oscillations—select the status of the Damp Peer Oscillation option that specifies that the implementation engages additional logic to dampen the oscillations of BGP peers in the face of series of automatic start and automatic stop operations in the IDLE state. The default option is Disable. The list contains:
  • Disable—disables the Damp Peer Oscillation option.
  • Enable—enables the Damp Peer Oscillation option.

• Delay Open—select the status of the delay in sending the first OPEN message to the BGP peer for a specific time period. The default option is Disable. The list contains:
  • Disable—disables the Delay Open option for sending open messages, which implies that open messages are sent to the remote BGP peer without any delay.
  • Enable—enables Delay Open option for sending open messages to the remote BGP peer for a configured open delay time period. This delay allows the remote peer to send the first open message.
• Delay Open Interval—enter the Delay Open Interval which is the amount of time for which the BGP peer should postpone sending the OPEN message to the remote peer. This value ranges from 0 to 65535. The default value is 0.
  Note:

  This field can be configured only if the Delay Open option is enabled.

• Max Prefix Limit—enter the maximum number of address prefixes that the BGP Peer is willing to accept from the neighbor. This value ranges from 1 to 2147483647. The default value is 100.
  Note:

  The default value is calculated based on the following formula: Maximum number of routes in the routing table / Maximum number of peers supported by BGP.

• Connect Retry Count—enter the retry count which specifies the number of times the BGP peer should try to establish a TCP-connect issue with its neighboring peers. If the BGP Peer exceeds the maximum count value, automatic stop event takes place and the BGP Peer is brought to the Idle State. This value ranges from 1 to 50. The default value is 5.
• VRF Name / Context Name—default.

• Add—adds and saves new configuration.
• Reset—resets to default value for respective fields and discards all user inputs.
• Apply—modifies attributes for the selected entry and saves the changes.

Layer 3 Management > BGP (cont.) > Peer Group 2

• Select—select the neighbor for which the configurations need to be modified.
• Peer Group Name—enter the Peer Group Name for configuring BGP peer group. The members of this peer group will inherit the characteristics configured with this screen. This value is a string of maximum size 20.
• EBGP Multi HOP—select the status of the EBGP Multi HOP. The default option is Disable. The options include:
  • Disable—disables BGP to establish connection with external peers residing on networks that are not directly connected. If EBGP—Multi HOP is disabled and external BGP peers are indirectly connected, BGP peer session will not be established.
  • Enable—enables BGP to establish connection with external peers residing on networks that are not directly connected. If EBGP peer are not connected directly, EBGP—Multi HOP is enabled to initiate the connection with that external peer.
  Note:

  This configuration is effective only when EBGP peers are added to this peer group.

  EBGP Hop Limit—enter the EBGP Hop Limit value that is used during connection with external peers. BGP speaker accepts or attempts connection to external peers residing on network that are not directly connected but separated by the configured Hop Limit value. This value ranges from 0 to 255. The default value is 1.
  Note:

  This configuration is effective only when EBGP peers are added to this peer group.

• NEXT HOP—select whether the next hop attribute sent in the update message to the peers in this peer group has to be generated automatically or self. This is useful in non-meshed networks where BGP neighbors may not have direct access to all other neighbors on the same IP subnet. The default option is AUTOMATIC. The list contains:
  • AUTOMATIC—generates the next hop based on the IP address of the destination and the present next hop in the route information.
  • SELF—enables BGP to send itself as the next hop for advertised routes.

• RFL—select Route Reflector Client (RFL) status of the peer. This status is used to define client and non-client peers when implementing route reflection. The default option is NONCLIENT. The list contains:
  • NONCLIENT—configures the peer as non-client peer, which denotes that the peer is outside the cluster.
  • CLIENT—configures the peer as client peer, which denotes that the peer is within the cluster

  The route reflection mechanism operates as follows:

  • A cluster system acting as route reflector sends a route to all client peers within the cluster if the route is received from a non-client peer.
  • The cluster system acting as route reflector sends a route to all non-client peers and all client peers except the originator if the route is received from a client peer.
• TCP Send Buffer Size—enter the TCP window size on the sender side for all peers in this peer group. This value ranges from 4096 to 65536. The default value is 65536.
• TCP Receive Buffer Size—enter the TCP window size on the receiver side for all peers in this peer group. This value ranges from 4096 to 65536. The default value is 65536.
• Community Send Status—select the Community Send Status attribute for the peers in this peer group. The default option is Send. The list contains:
  • None—sets Community Send Status as none.
  • Send—sends a community attribute to a BGP neighbor and enables advertisement of community attributes (standard/extended) to peers
  • DontSend—disables advertisement of standard community attributes to peer.
• Extended Community Send Status—select the status of Extended Community Send attribute for the peers in this peer group. The BGP extended community is used to label BGP routing information for controlling the distribution of the information. The default option is send. The list contains:
  • None—sets Extended Community Send Status as none.
  • Send—sends a Extended Community attribute to a BGP neighbor and enables advertisement of community attributes (standard/extended) to peers
  • DontSend—disables advertisement of Extended Community attributes to peer.

• Peer Group Connection Passive—select the status of the Peer Group Connection Passive. The default option is Disable. The options include:
  • Enable—sets the Peer Group Connection as passive. BGP speaker waits for the remote peer to initiate the session with the peer.
  • Disable—sets the Peer Group Connection as active. BGP speaker initiates the session with the peer.
• Default Originator—select the status of the advertisement of the default route to all peers in this peer group. The default option is Disable. The options include:
  • Enable—enables the advertisement of the default route to all peers in this peer group.
  • Disable—disables the advertisement of the default route to all peers in this peer group.
  Note:

  This field overrides the global default route configuration and always sends a default route to the peer with self next-hop. This advertisement occurs irrespective of the presence of default route in FDB.

• Activate MP Capability—select the option to activate corresponding MP Capability. If any MP Capability is activated, then this capability should be negotiated while establishing session with the peers in this group. The default option is IPV4unicast. The list contains:
  • IPV6unicast—activates the corresponding MP Capability for IPV6 unicast address.
  • IPV4unicast—activates the corresponding MP Capability for IPV4 unicast address.
• Deactivate MP Capability—select the option to Deactivate corresponding MP Capability. If any MP Capability is deactivated, then this capability should be negotiated while establishing session with the peers in this group. The default option is IPV4unicast. The list contains:
  • IPV6unicast—deactivates the corresponding MP Capability for IPV6 unicast address.
  • IPV4unicast—deactivates the corresponding MP Capability for IPV4 unicast address.
• In RouteMap Name—enter the name of the route map for this peer group entry. This value is a string of maximum size 20.
• Out RouteMap Name—enter the name of the out route map for this peer group entry. This value is a string of maximum size 20.
• In PrefixList Name—enter the In PrefixList Name for the neighbor. This value is a string of maximum size 20.
• Out PrefixList Name—enter the Out PrefixList Name for the neighbo. This value is a string of maximum size 20.

• ORF Type—click to enable address prefix-based Outbound Route Filter (ORF) for the specified BGP peer group.
• ORF Mode—select the ORF Capability Support Mode for the specified peer group entry. The default option is none. The list contains:
  • none—disables ORF capability.
  • receive—enables ORF receive capability.
  • send—enables ORF send capability.
  • both—enables both send and receive ORF Capability.
• BFD Monitoring—select the BFD monitoring status for the BGP peer. The default value is set as disable. The list includes:
  • Enable—specifies that BFD monitoring is enabled. When enabled BGP will register with BFD for IP path monitoring when the session state becomes established.
  • Disable—specifies that BFD monitoring is disabled. The BGP de-registers with BFD if it is already registered.
• VRF Name / Context Name—default.

• Add—adds and saves new configuration.
• Reset—resets to default value for respective fields and discards all user inputs.
• Apply—modifies attributes for the selected entry and saves the changes.
• Delete—deletes the selected entry.

This screen can be configured only if a peer and a peer group are created.

• To create a Peer, go to Layer 3 Management > BGP > Neighbors > Neighbor Configuration screen.
• To create a Peer group, go to Layer 3 Management > BGP (cont.) > Peer 1 or Layer 3 Management > BGP (cont.) > Peer Group 2 > Neighbor Configuration

Layer 3 Management > BGP (cont.) > Peer Addition with Peer Group

• Select—enter a Peer Group Name.
• Peer Group Name—enter the Peer Group Name to which the peer has to be added. This value is a string of maximum size 20.
• Address Family/ Peer Address Family—select the Address Family of the peer. The default option is IPV4.
  • IPV6—specifies that the peer belongs to the IPV6 Address Family
  • IPV4—specifies that the peer belongs to the IPV4 Address Family.
• Peer Address—enter the remote IP address of the BGP peer.
• VRF Name / Context Name—default.

• Add—adds and saves new configuration.
• Delete—deletes the selected entry.

Layer 3 Management > BGP (cont.) > Clear BGP

• IPV4—click to reset the BGP connection dynamically for all IPv4 address family peers.
• IPV6—click to reset the BGP connection dynamically for all IPv6 address family peers.
• ALL—click to reset all BGP peers.
• EXTERNAL—click to reset all external peers.
• Address Family—select the address family for which the BGP connection needs to be reset.
  • IPV6—clears all BGP connections in IPv6 Address Family.
  • IPV4—clears all BGP connections in the IPv4 Address Family.
• PEER ADDRESS—click the option button to select the PEER ADDRESS for which the BGP Connection needs to be reset and enter the Peer Address.

• PEER GROUP—click the option button to select the PEER GROUP for which the BGP Connection needs to be reset and enter the Peer Group name. This value is a string of maximum size 20.
• AS NUM—click the option button to select the AS number for which the BGP Connection needs to be reset and enter the AS number.
• Flap Statistics—click to select the option to clear the route Flap Statistics for the BGP. Enter the required IPv4 / IPv6 address and the Prefix Length to clear the route Flap Statistics.
• Dampening—click to select the option to clear the dampening configuration for the BGP. Enter the required IPv4 / IPv6 address and the Prefix Length to clear the Dampening statistics.
• Soft—select the Soft clear which is automatically assumed when the route refresh capability is supported.
  • None—does not initiate inbound soft reconfiguration.
  • In—initiates inbound soft reconfiguration which causes the software to store all received updates without modification regardless of whether an update is accepted by the inbound policy
  • Out—initiates outbound soft configuration which does not have any memory overhead and does not require any pre-configuration. An outbound reconfiguration can be triggered on the other side of the BGP session to make the new inbound policy take effect.
  • Both—initiates both inbound and outbound soft reconfiguration.
  • In Prefix-filter—initiates soft reconfiguration of in Prefix-filter.
• VRF Name—default.

• Add—adds and saves new configuration.

Route map can be configured only if a neighbor is created using the Layer 3 Management > BGP > Neighbors > Neighbor Configuration screen.

Layer 3 Management > BGP (cont.) > Route Map

• Select—click to select the Peer Address for which the configuration needs to be modified or the route map to be deleted.
• Peer Address—enter the remote IP address of the BGP peer.
• Route Map Direction—select the direction of the route map. The default option is IN. The list contains.
  • IN—enables Route Map for inbound routes. This applies the route map rules for incoming routes from the peer.
  • OUT—enables Route Map for outbound routes. This applies the route map for the advertising routes to the peer.
• Route Map Name—enter the remote IP address of the BGP peer.
• VRF Name / Context Name—default.

• Add—adds and saves new configuration.
• Reset—resets to default value for respective fields and discards all user inputs.
• Apply—modifies attributes for the selected entry and saves the changes.
• Delete—deletes the selected entry.

Layer 3 Management > BGP (cont.) > Peer ORF Config

• Select—click to select the peer address for which the ORF configuration needs to be applied.
• Peer Address—enter the remote IP address of the BGP peer.
• ORF Type—displays outbound route filter (ORF) Type as address prefix-based for the specified BGP peer group.
• Send Mode—select the send mode status for the specified remote IP address of the BGP peer. The default option is enable. The list contains:
  • enable—enables the ORF filter send mode.
  • disable—disables the ORF filter send mode.
• Receive Mode—select the receive mode status for the specified remote IP address of the BGP peer. The default option is enable. The list contains:
  • enable—enables the ORF filter receive mode.
  • disable—disables the ORF filter receive mode.
• Send Mode Rx-Status—displays the send mode Rx-Status for the specified remote IP address of the BGP peer.
• Receive Mode Rx-Status—displays the receive mode Rx-Status for the specified remote IP address of the BGP peer.
• In Prefix List Name—enter In Prefix List Name for neighbor. This value is a string of maximum size 20.
• Out Prefix List Name—enter Out Prefix List Name for neighbor. This value is a string of maximum size 20.
• VRF Name / Context Name—default.

• Apply—modifies attributes for the selected entry and saves the changes.

Layer 3 Management > BGP (cont.) > ORF Filters

• Peer Addr—displays the remote IP address of the BGP peer.
• Seq No—displays the sequence number of an entry. This value ranges from 1 to 4294967295.
• Action—displays the filter action of the packet route-update for the associated sequence number. The default option is permit. The list contains:
  • Permit—allows packet route-update with the associated sequence number value to pass the filter.
  • Deny—denies the packet route-update with the associated sequence number value to pass the filter
• Address Prefix—displays the IPv4 / IPv6 address prefix for the ip prefix-list entry.
• Prefix-Len—displays the prefix length for IPv4 / IPv6 address prefix for the IP prefix-list entry. This value ranges from 1 to 32 for IPv4 address and from 0 to 128 for IPv6 address.
• Min Prefix-Len—displays the minimum prefix length to be matched. This value ranges from 1 to 32 for IPv4 address and from 0 to 128 for IPv6 address. Minimum prefix length must be greater than prefix length and less than or equal to max prefix length.
• Max Prefix-Len—displays the maximum prefix length to be matched. This value ranges from 1 to 32 for IPv4 address and from 0 to 128 for IPv6 address. Maximum prefix length must be greater than prefix length and greater than or equal to min prefix length.
• VRF Name / Context Name—default.

Layer 3 Management > BGP (cont.) > Filtering

• Common Preference Value—displays the Common Preference Value.
• Route Map Name—displays the sequence number of an entry. This value ranges from 1 to 4294967295.
• Filter type—displays the filter type. The default option is permit. The list contains:
  • Distance
  • Distribute in
  • Distribute out
• Preference Value (distance only*)—displays the IPv4 / IPv6 address prefix for the ip prefix-list entry.
• VRF Name / Context Name—default.

• Add—adds and saves new configuration.
• Reset—resets to default value for respective fields and discards all user inputs.
• Apply—modifies attributes for the selected entry and saves the changes.
• Delete—deletes the selected entry.