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.
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
- 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
- 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
- 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
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
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
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