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Monitoring 802.3ad Link Aggregation

This section explains how to use the show commands to display the characteristics and the configured settings for 802.3ad link aggregation.

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

show interfaces lag

Use to 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(config):show interfaces interfaceType interfaceSpecifier lag
Field descriptions
- 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
  - 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 Partner link
  - priority—Priority assigned to the Ethernet link by the Partner link
  - key—Operational key value assigned to the Ethernet link by the Partner link
  - age—Number of seconds since last LACP was received
  - 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
- 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

Example

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

See show interfaces lag.

show interfaces lag members

Use to 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.
Field descriptions
- Lag—Name of the LAG bundle
- Administrative status—Operational state that you configured for the LAG
- 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

Example

host1#show interfaces boston lag members
 
Lag bostonBundle is Up, Administrative status is Up
   Member-interface FastEthernet0/0 is Up
      (LACP active, state collecting/distributing)
   Member-interface FastEthernet0/5 is Up
      (LACP active, state collecting/distributing)
 
Lag actonBundle is Up, Administrative status is Up
   Member-interface FastEthernet4/0 is Up
      (LACP passive, state collecting/distributing)
   Member-interface FastEthernet4/6 is Up
      (LACP passive, state collecting/distributing)
2 lag interfaces found

See show interfaces lag members.

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