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    Monitoring Ethernet Member Links in all IEEE 802.3ad LAG Bundles

    Purpose

    Display information about the Ethernet member links in all IEEE 802.3ad link aggregation group (LAG) bundles configured on the router, or about the member links in a specified IEEE 802.3ad LAG bundle.

    Specify either the Fast Ethernet or Gigabit Ethernet interface type when issuing this command:

    host1#show interfaces interfaceType interfaceSpecifier lag members

    Note: The E120 and E320 routers output for monitor and show commands is identical to output from other E Series routers, except that the E120 and E320 routers output also includes information about the adapter identifier in the interface specifier (slot/adapter/port).

    Action

    To display information about the Ethernet member link in an IEEE 802.3ad LAG bundle:

    host1#show interfaces lag members
    Lag lag1 is Up, Administrative status is Up
     MAC Address is 0090.1a42.7568
     MTU: Operational 1518
     Duplex Mode: Operational Full Duplex
     Speed: Operational 4000 Mbps
     System Priority 32768 System MAC Address is 0090.1a42.6273 key 9
     Partner System Priority 32768 System MAC Address is 0090.1a42.6273 key 21
    
     Configured Redundant Port: GigabitEthernet14/0/3
      Failover Timeout: 1000 ms Transmitter off Auto revert enabled
      Active Port: GigabitEthernet14/0/3, Failed Port: GigabitEthernet14/0/2
      Last failover at TUE AUG 26 2008 03:17:49.230 UTC Failover count 3
      Last Failed Port: GigabitEthernet14/0/3
    
       Member-interface GigabitEthernet14/0/0 is Up
          (LACP active, state collecting/distributing)
       Member-interface GigabitEthernet14/0/1 is Up
          (LACP active, state collecting/distributing)
       Member-interface GigabitEthernet14/0/2 is Down
          (LACP active, state detached)
       Member-interface GigabitEthernet14/0/3 is Up
          (LACP active, state collecting/distributing)

    Meaning

    Table 1 lists the show interfaces lag member command output fields.

    Table 1: show interfaces lag member Output Fields

    Field Name

    Field Description

    Lag

    Name of the LAG bundle

    Administrative status

    Operational state that you configured for this interface

    MAC Address

    MAC address of the processor on this interface

    System Priority

    Priority assigned to the Ethernet link by the system

    MTU

    Status of LACP configuration for the Ethernet link:

    • Operational—MTU size of the current packet being processed
    • Administrative—Setting for MTU size that you specified

    Duplex Mode

    Duplex option for this interface:

    • Operational—Duplex option currently used
    • Administrative—Setting for duplex that you specified

    Speed

    Line speed for this interface:

    • Operational—Current rate at which packets are processed
    • Administrative—Setting for line speed that you specified

    System MAC Address

    MAC address assigned to the Actor link

    Partner System Priority

    Priority assigned to the Ethernet link by the Partner link’s system

    System MAC Address

    MAC address assigned to the Partner link by the system

    Failover Timeout

    The amount of time between the current link event leading to failover or reversion and the previous link failover or reversion, in the range 100-10000 milliseconds (ms)

    Active Port

    Port number of the currently active port in the LAG bundle

    Failed Port

    Port number of the port that encountered a link failure in the LAG bundle

    Last failover at

    The time at which the last failover from the primary link in the LAG bundle to the secondary link occurred

    Last Failed Port

    Port number of the last failed interface in the LAG bundle

    Member-interface

    Status of the member interface in the bundle:

    • Interface Specifier—Status of the hardware on this interface (up or down)
    • LACP active—Ethernet link participates in the protocol regardless of whether its Partner member link is set to active or passive LACP PDU participation
    • LACP passive—Ethernet link transmits LACP PDUs only when it receives LACP PDUs from its Partner link
    • collecting/distributing—Ethernet link is actively collecting incoming frames and distributing outgoing frames
    • detached—Ethernet link is detached from the LAG bundle due to protocol changes or system constraints
    • waiting—Ethernet link is waiting to attach to a LAG bundle

    Published: 2014-08-14