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Verifying That LACP Is Configured Correctly and Bundle Members Are Exchanging LACP Protocol Packets
Verify that LACP has been set up correctly and that the bundle members are transmitting LACP protocol packets.
Verifying the LACP Setup
Purpose
Verify that the LACP has been set up correctly.
Action
TO verify that LACP has been enabled as active on one end:
user@switch>show lacp interfaces xe-0/1/0Aggregated interface: ae0
LACP state: Role Exp Def Dist Col Syn Aggr Timeout Activity
xe-0/1/0 Actor No Yes No No No Yes Fast Active
xe-0/1/0 Partner No Yes No No No Yes Fast Passive
LACP protocol: Receive State Transmit State Mux State
xe-0/1/0 Defaulted Fast periodic Detached
Meaning
This example shows that LACP has been configured with one side as active and the other as passive. When LACP is enabled, one side must be set as active in order for the bundled link to be up.
Verifying That LACP Packets Are Being Exchanged
Purpose
Verify that LACP packets are being exchanged between interfaces.
Action
Use the show interfaces aex statistics command to display LACP BPDU exchange information.
show interfaces ae0 statisticsPhysical interface: ae0, Enabled, Physical link is Down
Interface index: 153, SNMP ifIndex: 30
Link-level type: Ethernet, MTU: 1514, Speed: Unspecified, Loopback: Disabled,
Source filtering: Disabled, Flow control: Disabled, Minimum links needed: 1,
Minimum bandwidth needed: 0
Device flags : Present Running
Interface flags: Hardware-Down SNMP-Traps Internal: 0x0
Current address: 02:19:e2:50:45:e0, Hardware address: 02:19:e2:50:45:e0
Last flapped : Never
Statistics last cleared: Never
Input packets : 0
Output packets: 0
Input errors: 0, Output errors: 0
Logical interface ae0.0 (Index 71) (SNMP ifIndex 34)
Flags: Hardware-Down Device-Down SNMP-Traps Encapsulation: ENET2
Statistics Packets pps Bytes bps
Bundle:
Input : 0 0 0 0
Output: 0 0 0 0
Protocol inet,
Flags: None
Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
Destination: 10.10.10/24, Local: 10.10.10.1, Broadcast: 10.10.10.255
Meaning
The output here shows that the link is down and that no PDUs are being exchanged (when there is no other traffic flowing on the link).
