BGP4

Layer 3 Management > BGP4 > Confederations

• Select—select the Peer ASN and delete the confederation.
• Peer AS NO—enter the peer ASN for which the confederation status needs to be configured. This value ranges from 1 to 65535. The ASN identifies the BGP router to other routers and tags the routing information passed along.
• Confederation status / Status—select the status of the BGP confederation identifier which specifies the confederation to which the autonomous systems belong to. The default option is enable. The list contains:
  • Enable—configures the BGP confederation identifier which specifies the confederation to which the autonomous systems belong.
  • Disable—deletes the configured BGP confederation identifier.
• VRF Name / Context Name —default.

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

The RFD parameters can be configured only if,

• Global admin status of the BGP4 is set as disabled using the Layer 3 Management > BGP > Basic Setting > BGP Basic Settings screen.
• Local AS of BGP4 is configured using the Layer 3 Management > BGP > GP VRF Creation

Layer 3 Management > BGP > RFD

• Half life time—enter the time duration in seconds after which a penalty is decreased by half. Once a route has been assigned a penalty, the penalty is decreased for every 5 seconds. BGP’s route flap dampening algorithm calculates penalty for all routes. This penalty increases by a fixed value when a flap occurs and decreases exponentially when the route is stable. This value ranges from 600 to 2700 seconds. The default value is 900.
• Reuse Value—enter the reuse value below which the suppressed route will be reused. This value ranges from 100 to 1999. If the penalty for a flapping route falls below this value, the route is reused. The unsuppressing of routes occurs at 10-seconds increments. The default value is 750.
  Note:

  Reuse Value can be configured only if the Half Life Time value is configured.

• Suppress Value—enter the suppress value above which the route will be suppressed. The route is suppressed if the penalty associated with the route exceeds this value. This value ranges from 2000 to 3999 seconds. The default value is 2000.
  Note:

  Suppress value can be configured only if the Half Life Time and Reuse value are set.

• Maximum Suppress Value—enter the maximum time (in seconds) a route can be suppressed. This value ranges from 1800 to 10800 seconds. The default value is 3600.
  Note:

  Max-Suppress Time can be configured only if the half life time, reuse value and suppress value are set.

• Decay timer granularity—enter the timer granularity (in seconds) for performing all decay calculations. This value ranges from 1 to 10800 seconds. The default value is 1.
• Reuse timer granularity—enter the time interval between evaluations of the reuse lists. This value ranges from 15 to 10800 seconds. The default value is 15.
• Reuse Array index—enter the size of reuse index arrays. This size determines the accuracy with which suppressed routes can be placed within the set of reuse lists when suppressed for a long time. This value ranges from 256 to 65535. The default value is 1024.
• VRF Name—default.

• 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 > BGP4 > Comm Filters

• Select—select the Peer ASN and delete the confederation.
• Community value—enter the community value for which the incoming / outgoing filtering policy is to be updated. This value ranges from 65536 to 4294901759 and 4294967041 to 4294967043.

• Filter Status—select the incoming / outgoing filtering policy for the community. The default option is Permit. The list contains:
  • Permit—allows a particular community attributes to be received or advertised in updates.
  • Deny—filters the routes containing the community attribute value in received or advertised updates.
• Filter Table/ Filter Type—select to configure the incoming filter status or outgoing filter status for a given community value. The default option is In. The list contains:
  • In—configures the direction of route-updates on which the community filter policy needs to be applied as in. This indicates that the community filter needs to be applied on received routes.
  • Out—configures the direction of route-updates on which the community filter policy needs to be applied as out. This indicates that the community filter needs to be applied on routes advertised to peers.
• 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 > BGP4 > Comm Policies

• Select—select the community value for which the policy needs to be deleted.
• IP Address—enter the IP Address for which the community policy needs to be applied.
• Prefix Length—enter the IP prefix length for the destination. This IP prefix length configures the number of high-order bits in the IP address. These bits are common among all hosts within a network. This value ranges from 1 to 32.
• Community set Status—select the community set status for the route. The default option is Modify. The list contains:
  • Set—sends only the configured additive communities with associated route
  • SetNone—sends the associated route without communities.
  • Modify—removes the associated route with received delete communities and adds the configured additive communities.
    Note:

    This field can be set only if the local AS is configured for the BGP4.

• VRF Name—default.

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

Layer 3 Management > BGP4 > Comm Routes

• Select—select the community value for which the community route needs to be deleted.
• Ip Address—enter the IP Address of the destination.
• Prefix Length—enter the IP prefix length for the destination. This IP prefix length configures the number of high-order bits in the IP address. These bits are common among all hosts within a network. This value ranges from 1 to 32.
• Community Value—enter the community value for which the additive / delete communities need to be configured. This value ranges from 65536 to 4294901759 and 4294967041 to 4294967043.
• Route Table—select to configure the additive communities or delete communities for a given destination. The default option is Addition. The list contains:
  • Addition—adds associated community value to the already existing communities in the route update.
  • Deletion—removes the community attribute from the route-prefix when it passes through the filter process.
• VRF Name—default.

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

Layer 3 Management > BGP4 > Ext Comm Filters

• Select—select the Extended Community value for which the filter status needs to be modified or deleted.
• Community Value—the extended Community Value for which the input / outgoing filtering policy is to be updated. This field is an Octet string of maximum size 8.
• Filter Status—select the incoming / outgoing filtering policy for the extended community. The default option is Permit. The list contains:
  • Permit—allows a particular extended community attributes to be received or advertised in updates.
  • Deny—filters the routes containing the extended community attribute value in received or advertised updates.
• Filter Table/ Filter Type—select to configure the incoming filter status or outgoing filter status for a given extended community value. The default option is In. The list contains:
  • In—configures the direction of route-updates on which the extended community filter policy needs to be applied as in. This indicates that the community filter needs to be applied on received routes.
  • Out—configures the direction of route-updates on which the extended community filter policy needs to be applied as out. This indicates that the community filter needs to be applied on routes advertised to peers.
• VRF Name / Context Name —default.

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

Layer 3 Management > BGP4 > Ext Comm Policies

• Select—select the community value for which the policy needs to be deleted.
• IP Address—enter the IP Address of the destination.
• Prefix Length—enter the IP prefix length for the destination. This field configures the number of high-order bits in the IP address. These bits are common among all hosts within a network. This value ranges from 1 to 32.
• Community set Status—select the extended community set status for the route. The default option is Modify. The list contains:
  • Set—sends only the configured additive communities with associated route.
  • SetNone—sends the associated route without communities.
  • Modify—removes the associated route with received delete communities and adds the configured additive communities.
  Note:

  This field can be set only if the local AS is configured for the BGP4.

• VRF Name—default.

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

Layer 3 Management > BGP4 > Ext Comm Routes

• Select—select the IP Address for which the policy needs to be deleted.
• IP Address—enter the IP Address of the destination.
• Prefix Length—enter the IP prefix length for the destination. This field configures the number of high-order bits in the IP address. These bits are common among all hosts within a network. This value ranges from 1 to 32.
• Community value—enter the extended community value for which the additive / delete communities need to be configured. This field is an octet string of maximum size 8.
• Route Table—select to configure the additive / delete extended communities for a given destination. The default option is Additive. The list contains:
  • Additive—adds associated extended community value with the already existing communities in the route update.
  • Deletive—removes the extended community attribute from the route-prefix when it passes through the filter process.
• VRF Name / Context Name—default.

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