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    Monitoring a Specified Ethernet Member Link in an IEEE 802.3ad LAG Bundle

    Purpose

    Display information about a specified Ethernet member link in an IEEE 802.3ad link aggregation group (LAG) bundle.

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

    host1#show interfaces interfaceType interfaceSpecifier lag

    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 a specified Ethernet member link in an IEEE 802.3ad LAG bundle:

    host1#show interfaces fastEthernet 4/0 lag
    FastEthernet4/0 is Up, Administrative status is Up
     Member of Lag boston
     LACP passive, mux state collecting/distributing
     LACP state (0x3c) passive, long timeout, aggregatable, in-sync, collecting, distributing
     port 0 priority 32768 key 8
     System Priority 32768 System MAC Address is 0090.1a40.2043
     Partner: state (0x3d) active, short timeout, aggregatable, in-sync,
    collecting, distributing
      port 0 priority 32768 key 8 age 25
      System Priority 32768 System MAC Address is 0090.1a40.2043
     
     LACP packets: received 8, transmitted 7
     Marker Protocol request packets: received 0, transmitted 0
     Marker Protocol response packets: received 0, transmitted 0
     Discarded 0, unknown protocol received 0

    Meaning

    Table 1 lists the show interfaces lag command output fields.

    Table 1: show interfaces lag Output Fields

    Field Name

    Field Description

    interfaceSpecifier

    Status of the hardware on this interface:

    • Up—Hardware is operational
    • Down—Hardware is not operational

    Administrative status

    Operational state that you configured for this interface

    Member

    Membership status of the Ethernet link

    LACP

    Status of LACP configuration for the Ethernet link:

    • active—Ethernet link participates in the protocol regardless of whether its Partner member link is set to active or passive LACP PDU participation
    • passive—Ethernet link transmits LACP PDUs only when it receives LACP PDUs from its Partner member link

    mux state

    Status of collecting and distributing at the Mux state machine:

    • 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

    LACP state

    State of the LACP:

    • active—Actor link actively particulates in LACP
    • passive—Actor link transmits LACP PDUs
    • timeout—Timeout control value; this value is not configurable and is set to long timeout (30 seconds)
    • aggregatable—Actor link can be aggregated
    • individual—Actor link cannot be aggregated; must operate as an individual link
    • in-sync—Actor link has joined the correct LAG bundle
    • out-of-sync—Actor link is unable to join the correct LAG bundle
    • collecting—Actor link is actively collecting incoming frames; if this field does not appear, the Actor link is not actively collecting incoming frames
    • distributing—Actor link is actively distributing outgoing frames; if this field does not appear, the Actor link is not actively distributing outgoing frames
    • defaulted—Actor link is using defaulted operational information about the Partner link that was administratively configured for Partner; if this field does not appear, the operational information about the Partner link has been received by the Actor link in an LACP PDU
    • expired—Actor link’s receive machine is expired; if this field does not appear, the Actor link’s receive machine is active
    • port—Port number assigned to the Ethernet link by the Actor link
    • priority—Priority assigned to this Ethernet link by the Actor link
    • Key—Operational key value assigned to the Ethernet link by the Actor link
    • System Priority—Priority assigned to the Ethernet link by the system
    • System MAC Address—MAC address assigned to the Actor link

    Partner

    Status of the Partner link

    • active— Partner link participates in the LACP
    • passive—Partner link transmits LACP PDUs
    • timeout—Timeout control value; short timeout or long timeout
    • aggregatable—Partner link can be aggregated
    • individual—Partner link cannot be aggregated
    • in-sync—Partner link has joined the correct LAG bundle
    • out-of-sync—Partner link has joined the incorrect LAG bundle
    • collecting—Partner link is actively collecting incoming frames; if this field does not appear, the Partner link is not actively collecting incoming frames
    • distributing—Partner link is actively distributing outgoing frames; if this field does not appear, the Partner link is not actively distributing outgoing frames
    • defaulted—Partner link is using defaulted operational information about the Partner link that was administratively configured for Partner; if this field does not appear, the operational information about the Partner link has been received by the Actor link in an LACP PDU
    • expired—Partner link’s receive machine is expired; if this field does not appear, the Partner link’s receive machine is active
    • port—Port number assigned to the Ethernet link by the Actor link
    • priority—Priority assigned to this Ethernet link by the Actor link
    • Key—Operational key value assigned to the Ethernet link by the Actor link
    • System Priority—Priority assigned to the Ethernet link by the system
    • System MAC Address—MAC address assigned to the Partner link by the system

    LACP packets

    Number of transmitted and received LACP packets

    Marker Protocol request packets

    Number of Marker Protocol packets requested to verify transmissions

    Marker Protocol response packets

    Number of Marker Protocol response packets that verified transmissions

    Discarded

    Number of invalid LACP packets

    Published: 2014-08-14