Port Manager

Layer 2 Management > Port Manager > Basic Settings

• Select—click to select the port for which the configuration needs to be done.
• Port—displays the port, which is a combination of interface type and interface ID. The interface ID is a combination of slot number and port number (slot number/port number).
• Link Status—displays the status of the link using graphics. The link represents a physical connection established between the switches or switch and device in a network. The graphical representation is:
  • Green up arrow—denotes that the link is working; that is, the physical connection established for the port is active and is ready for exchange of traffic.
  • Red down arrow—denotes that the link is not working; that is, no physical connection is established for the port, or the established physical connection is not active and a faulty one.
• Admin State—select the desired state of the port. The default option is Up. The state changes to Up or Down state, as a result of either explicit management action or per configuration information retained by the managed system. The list contains:
  • Up—allows the port to transmit/receive the traffic. The port cannot transmit / receive the traffic if the Link is not working.
  • Down—blocks the port from transmitting/receiving the traffic. The port will not transmit / receive the traffic, even if the Link is working.
  • Down*—blocks the port from transmitting / receiving the traffic with some conditions.
  • LoopBack—sets the desired admin state as loopback.
• Bridge Port Type—displays the bridge port type for the particular port. The configuration associated with the port is flushed, once the bridge port type is changed. The port type can be configured, only if the bridge mode is selected other than Customer Bridge and Provider Bridge in the Bridge Mode selection screen. The default option is CustomerBridgePort for customer bridges and as ProviderNwPort for provider core and edge bridges. The list contains:
  • ProviderNwPort—denotes that the port is connected to a single provider.
  • CustomerNwPort—denotes that the port is in the S-VLAN component and can transmit or receive frames for single customer. All packets received on this port are mapped to single service instance identifier by PVID of the port. The Acceptable Frame Type is always set as UnTagged and Priority Tagged. This bridge port type is supported only in provider bridging.
  • CustomerNwPortStagged—denotes that the port is in S-VLAN component and can transmit or receive frames for a single customer. VLAN classification is based on S-tag received on the interface or PVID of the port. The Ingress Filtering is always set as Enabled on the port.

• Bridge Port Type— The list contains (cont):
  • CustomerEdgePort—denotes that the port is in a PCB (Provider Core Bridge); that is, connected to a single customer. The packets received on this port are initially classified as a CVLAN. CVLAN classification is done based on the VID in the C-tag present in the packet or from the PVID of the port. Service instance selection is done for a frame based on the entry present in the C-VID registration table for the pair (C-VID & reception port).
  • PropCustomerEdgePort—denotes that the port is connected to a single customer, where multiple services can be provided based on only proprietary S-VLAN classification tables. S-VLAN classification is not done based on C-VID registration table on the port.
  • PropCustomerNwPort—denotes that the port is connected to a single customer, where multiple services can be provided based on CVLANs by assigning one of the proprietary S-VLAN classification tables to the port. The services can also be assigned using other proprietary S-VLAN classification tables, where CVLAN is not the index of the table.
  • PropProviderNwPort—denotes that the port is connected to a Q-in-Q bridge located inside the provider network. The port acts as a part of S-VLAN component. The packets to be tagged and sent out of the port contain 0x8100 as its Ethertype. The packets received with standard Q tag are considered as S-Tagged packets.
  • CustomerBridgePort—denotes the port to be used in customer bridges and in provider (Q-in-Q) bridges. This port type is not valid in PCBs and PEBs.
  • None—denotes that bridge port type is not set for the port. This is currently not supported.
  Example:
  • The following details are flushed, when port types CustomerNwPortStagged and ProviderNwPort are changed to any other type:
    • Unicast entries learnt on the port
    • VID translation table entries associated with the port
  • The following details are flushed, when port type CustomerBridgePort is changed to any other type.
    • Unicast entries learnt on the port
    • C-VID registration table entries associated with the port
    • PEP configuration table entries
    • Service priority regeneration table entries

The port type can be set only as CustomerBridgePort in customer bridges.

The port type can be set only as ProviderNwPort in provider core and edge bridges.

The port type can be set only as CustomerNwPort or ProviderNwPort, in provider backbone bridge.

The port types CustomerEdgePort and PropCustomerEdgePort, are allowed only in PEBs.

The port type cannot be set for a port-channel port if physical ports are aggregated in the port-channel.

The port type cannot be set for a port that is a part of a port-channel.

The switch port mode can be set to Trunk for a port, only if the port is not a member of Untagged Ports for a VLAN.

The switch port mode is greyed out and cannot be configured if the Port Type is set as a Router Port.

A host port can be associated only with one secondary VLAN and with the associated primary VLAN.

Promiscuous ports should be configured as member port of primary VLAN and member port of all secondary VLANs associated with that primary VLAN.

Host and promiscuous ports should be configured as untagged members of primary / secondary VLANs.

An access / hybrid port automatically changes as a host port, when configured as a member port of a primary/secondary VLAN.

Ingress Filtering cannot be disabled on host and promiscuous ports.

The port is removed from the associated PVLAN domain, when the mode is changed from promiscuous / host to access/hybrid.

• Link Up/Down Trap—select whether the Link Up / linkDown trap should be generated for the interface. The Link Up trap denotes that the communication link is available and ready for traffic flow. The linkDown trap denotes that the communication link failed and is not ready for traffic flow. The default option is Enabled for interfaces that do not operate on top of any other interface. Otherwise, the trap is set as Disabled. The list contains:
  • Enabled—enables the generation of Link Up/linkDown traps for the interface.
  • Disabled—disables the generation of Link Up/linkDown traps for the interface
• Port Type—select the port type as an L2 port or an L3 port. The default option is Switch Port for the newly enabled physical port. The list contains:
  • Switch Port—sets the port as an L2 port. The port forwards traffic based on the MAC address and operates in Layer 2.
  • Router Port—sets the port as an L3 port. The port forwards traffic based on the IP address and operates in Layer 3. The port is not associated with a particular VLAN, does not support VLAN sub interfaces, and behaves like a normal L3 interface.

• Mac Address—enter the unicast MAC address of the interface. This value is set as an octet string of zero length for interface (e.g., serial line) that does not have address at its protocol sub-layer. By default, the MAC address is obtained from the switch.

• Apply—modifies attributes and saves the changes.

Layer 2 Management > Port Manager > Traffic Class

• Select—click to select the port for which the configuration needs to be done.
• Port—displays the port, which is a combination of interface type and interface ID. The interface ID is a combination of slot number and port number (slot number/port number).
• Traffic Class—select the traffic class value to which the received frame of specified priority is to be mapped. The priority value ranges from 0 to 7. The priority determined for the received frame is equivalent to the priority indicated in the received tagged frame or one of the evaluated priorities determined based on the media-type. The priority determined is equal to the Default User Priority value for the ingress port if the untagged frames are received from Ethernet media. The priority determined is equal to the Regen user priority (configurable only through CLI) value for the ingress port and media-specific user priority if the untagged frames are received from non-Ethernet media. The default value is 0. The list for the traffic class contains:
  • 0—Best effort. This represents all kinds of non-detrimental traffic that is not sensitive to QoS metrics such as jitter.
  • 1—Background. This represents bulk transfers and other activities that are permitted on the network without impacting the network usage for users and applications.
  • 2—Standard (spare traffic). This represents traffic of more importance than background traffic class but of less importance than excellent load.
  • 3—Excellent load. This represents the best effort type service that an information services organization should deliver to its most important customers.
  • 4—Controlled load. This represents traffic subject to admission control for ensuring that the traffic is received even when the network is overloaded.
  • 5—Interactive voice and video. This represents traffic having delay less than 100 milli-seconds.
  • 6—Internetwork control—Layer 3 network control. This represents traffic having delay less than 10 milli-seconds.
  • 7—Network control—Layer 2 network control reserved traffic. This represents traffic that demands special treatment based on its requirements and relative importance.

• Apply—modifies attributes and saves the changes.

Layer 2 Management > Port Manager > Port Control

• Select—click to select the port for which the configuration needs to be done.
• Port—displays the port, which is a combination of interface type and interface ID. The interface ID is a combination of slot number and port number (slot number/port number).

• Mode—select the negotiation mode for the port. The negotiation avoids the risk of network disruption that arises from interference of dissimilar technologies with each other. The default option is Auto. The list contains:
  • Auto—advertises and negotiates parameters such as speed, duplex mode, and flow control of one port on an end of a link with another port on another end of the link for finding an optimal connectivity between them. When the mode is set as Auto, the hardware senses the speed and negotiates with the port on the other end of the link for data transfer operation as full-duplex or half-duplex and for flow control.
  • NoNego—uses the configured values for parameters such as speed, duplex mode, and flow control. This mode is used when the other switch does not have the capability to configure negotiation mode as auto and no-negotiation. When the mode is set as NoNego, the configured values for interface speed, duplex mode, and flow control become effective.
• Duplex—select the duplex mode that represents the flow of data through the port. The list contains:
  • Full—configures interface data transfer mode as full-duplex. Ports can send and receive data at the same time.
  • Half—configures interface data transfer mode as half-duplex. Ports can either send or receive data at that specified time.
  Note:

  The duplex mode can be configured, only if the negotiation Mode is set as NoNego. The duplex mode is automatically configured based on the hardware after negotiating with the peer if the negotiation Mode is set as Auto.

• Speed—select the speed of the interface. The list contains:
  • 10 MBPS—sets the port speed as 10MBPS. This implies that the port can transfer data at the rate of 10 Megabits per second.
  • 100 MBPS—sets the port speed as 100MBPS. This implies that the port can transfer data at the rate of 100 Megabits per second.
  • 1 GBPS—sets the port speed as 1IGBPS. This implies that the port can transfer data at the rate of 1 Giga bits per second.
  • 10 GBPS—sets the port speed as 10GBPS. This implies that the port can transfer data at the rate of 10 Giga bits per second.
  • 40 GBPS—sets the port speed as 40 GBPS. This implies that the port can transfer data at the rate of 40 Giga bits per second.
  • 56 GBPS—sets the port speed as 56 GBPS. This implies that the port can transfer data at the rate of 56 Giga bits per second.
  • 2.5 GBPS—sets the port speed as 2.5 GBPS. This implies that the port can transfer data at the rate of 2.5 Giga bits per second.
• • Full—configures interface data transfer mode as full-duplex. Ports can send and receive data at the same time.
  • Half—configures interface data transfer mode as half-duplex. Ports can either send or receive data at that specified time.

• FlowControl Admin Status—select the default administrative PAUSE mode for the interface. PAUSE is a flow control mechanism that is implied on full duplex Ethernet link segments. The mechanism uses MAC control frames to carry the PAUSE commands. This command is used to pause the flow of data for a time that is measured in units of quanta, where each unit is equal to 512-bit times. The list contains:
  • Disabled—disables the flow control mechanism (that is, PAUSE).
  • Transmit—enables the transmission of MAC control frames used for PAUSE to a remote device.
  • Receive—enables the reception of MAC control frames used for PAUSE from a remote device.
  • Both—enables both the transmission/reception of MAC control frames used for PAUSE to/from a remote device.
  Note:

  The PAUSE mode can be configured, only if the negotiation Mode is set as NoNego for the MAU attached to the interface. The PAUSE mode is automatically configured to the mode to which the interface will automatically revert once auto-negotiation is disabled, if the negotiation Mode is set as Auto for the Medium Attachment Unit (MAU) attached to the interface.This mode is applied only for the interface operating in full Duplex mode. Otherwise, the value set in this mode is ignored.The PAUSE mode cannot be set as Transmit and Receive on interfaces that operate at 100 Megabits per second or less.

• FlowControl Oper Status—displays the PAUSE mode currently used in the interface. If the negotiation Mode is set as Auto for the MAU attached to the interface, then the value is set based on the auto-negotiation function. The list contains:
  • Invalid—denotes that the flow control operational status is invalid.
  • Disabled—denotes that the flow control mechanism (that is, PAUSE) is disabled. This value is returned by interfaces operating in half Duplex mode and interfaces on which auto negotiation process is not yet completed.
  • Transmit—denotes that the transmission of MAC control frames used for PAUSE to a remote device is enabled. This value is never returned by interfaces operating at 100 Megabits per second or less.
  • Receive—denotes that the reception of MAC control frames used for PAUSE to a remote device is enabled. This value is never returned by interfaces operating at 100 Megabits per second or less.
  • Both—denotes that both the transmission/reception of MAC control frames used for PAUSE to/from a remote device is enabled.

• HOL-Block Prevention—select whether the Head-Of-Line (HOL) blocking should be prevented on a port. HOL blocking happens when HOL packet of a buffer cannot be switched to an output port (i.e. HOL occurs when a line of packets is held up by the first packet). The default option is Enabled. The list contains:
  • Enabled—prevents HOL blocking from occurring on the port. The high priority packets are placed in a separate queue and the low priority packets are discarded. The applications or TCP protocol keeps track of necessity to retransmit discarded packets.
  • Disabled—does not prevent v blocking on the port.
• CPU Controlled Learning—select whether the Head-Of-Line (HOL) blocking should be prevented on a port. HOL blocking happens when HOL packet of a buffer cannot be switched to an output port (i.e. HOL occurs when a line of packets is held up by the first packet). The default option is Enabled. The list contains:
  • Enabled—enables the software learning of MAC Address.
  • Disabled—disables the software learning of MAC Address.
  Note:

  When CPU controlled learning is enabled, for the first time, a packet is copied to CPU—source MAC address learning does not happen in the hardware. When packet is received at PNAC, and if the source MAC address is authorized, the packet is allowed to go through further processing; else, the packet is dropped. When packets from authorized MAC address are received at VLAN, MAC learning happens at VLAN and the same entry is programmed in the hardware. Once the MAC address is learnt, further forwarding happens at driver itself.When software learning is enabled, rate limiting to the port needs to be configured.

• Pause High Water Mark—enter the ingress rate equal to or above which PAUSE frames are transmitted. The value is from 1 to 80000000 kbps with default of 0.
• Pause Low Water Mark—enter the ingress rate equal to or above which PAUSE frames are stopped. The value is from 1 to 80000000 kbps with default of 0.
  Note:

  This value should be less than Pause High Water Mark (kbps).This value should be configured as 0 only if Flow Control Oper Status is disabled.

• Auto MDI/ MDIX Capability—select the Auto-MDIX mode for the interface. The default option is Auto. The list contains:
  • Auto—enables MDI/MDIX auto crossover of the interface.
    Note:

    This configuration is effective only if the speed of the port is auto negotiable

  • MDI—sets the port to MDI mode. This is hardware specific where transmit pair are pins 1,2 and the receive pair are 3,6 pins respectively for the particular port.
  • MDIX—sets the port to MDIX mode. This is hardware specific where transmit pair are pins 3&6 and the receive pair are 1&2 pins respectively for the particular port. MDIX is the vice versa of MDI.

• Apply—modifies attributes and saves the changes.

Layer 2 Management > Port Manager > Storm Control

• Select—click to select the port for which the configuration needs to be done.
• Port—displays the port, which is a combination of interface type and interface ID. The interface ID is a combination of slot number and port number (slot number/port number).
• DLF Level—enter the limiting value for the maximum number of DLF (Destination Lookup Failure) packets that can be transmitted per second over the interface. The value range is limited by the underlying hardware. The value 0 disables rate limiting for destination look up failure packets on the interface. This value ranges from 0 to 262143. The default value is 0.
• Broadcast Level—enter the limiting value for the maximum number of broadcast packets that can be transmitted per second over the interface. The value range is limited by the underlying hardware. The value 0 disables rate limiting for broadcast packets on the interface. This value ranges from 0 to 262143. The default value is 0.
• Multicast Level—enter the limiting value for the maximum number of multicast packets that can be transmitted per second over the interface. The value range is limited by the underlying hardware. The value 0 disables rate limiting for multicast packets on the interface. This value ranges from 0 to 262143. The default value is 0.
• Egress-Port Rate-Limit—enter the rate limit value that represents the maximum number of packets to be transferred per second on a port. The rate limit is applied based on the operating speed of the port. It affects the interface speed and is affected by the metering feature. The value 0 disables rate limiting; that is, it sets the port to the configured speed. This value ranges from 0 to 80000000. The default value is 0.

  The window resolution is 256 µsec. So, to get a resolution of 100 ms, the window is programmed with a value of 389. (i.e. 389 x 256 µsec = 99584 µsec = 99.584msec~= 100ms).

  Example:

  To have rate-limit at 1500 packets per second, this means that in 100ms resolution,packets that shall be allowed will be: (100ms x 1500)/1sec = 150 packets.With rate-limit resolution as 64 packets, the value that will be programmed inthe rate limiter field is: 150/64 = 2.34 ~= 2.

  Note: The value 0 disables rate limiting for the port. It sets the port to full speed.

• Port Burst-Size—enter the burst size that represents the maximum number of packet burst to be transferred per second on a port. The burst size is applied based on the operating speed of the port. It affects the interface speed and is affected by the metering feature. The value 0 disables burst rate limiting; that is, it sets the port burst rate limit to the configured speed. This value ranges from 0 to 80000000. The default value is 0.

• Apply—modifies attributes and saves the changes.

Layer 2 Management > Port Manager > Port Role

• Select—click to select the port for which the configuration needs to be done.
• Port—displays the port, which is a combination of interface type and interface ID. The interface ID is a combination of slot number and port number (slot number/port number).
• Link Status—displays the status of the link using graphics. The link represents a physical connection established between the switches or switch and device in a network. The graphical representation is:
  • Green up arrow—denotes that the link is working. That is, a physical connection established for the port is active and ready for exchange of traffic.
  • Red down arrow—denotes that the link is not working. That is, no physical connection is established for the port or the established physical connection is not active and is a faulty one.
• Port Role—select the port role for the interface for which the configuration is to be applied. The list contains:
  • Uplink—sets the port role for an interface as uplink.
  • Downlink—sets the port role for an interface as downlink.
  • Designated Uplink—sets the port role for an interface as designated uplink.

• Apply—modifies attributes and saves the changes.