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The following log message is displayed when LACP link–falback is removed:
Feb 26 15:53:32: %STKUNIT0-M:CP %SMUX-5-SMUX_LACP_PDU_RECEIVED_FROM_PEER: LACP PDU
received from PEER and connectivity to PEER will be restored to Uplink Port-channel 128.
May 12 16:30:21: %STKUNIT1-M:CP %IFMGR-5-LACP_LINK_FALLBACK_REVERTED: Te 1/11 : Reverted
LACP Fallback link
Enabling the Verification of Member Links Utilization
in a LAG Bundle
To examine the working efficiency of the LAG bundle interfaces, perform the following steps:
1. The functionality to detect the working efficiency of the LAG bundle interfaces is automatically activated on all the port
channels, except the port channel that is configured as a VLT interconnect link, during the booting of the switch.
2. Use the show link-bundle-distribution port-channel interface-number command to display the traffic
handling and utilization of the member interfaces of the port channel. The following sample output is displayed when you
enter this show command.
EXEC
Dell#show link-bundle-distribution port-channel
Dell#show link-bundle-distribution port-channel 1
Link-bundle trigger threshold - 60
LAG bundle - 1 Utilization[In Percent] - 0 Alarm State - Inactive
Interface Line Protocol Utilization[In Percent]
Te 0/5 Up 0
Te 0/7 Up 0
Monitoring the Member Links of a LAG Bundle
You can examine and view the operating efficiency and the traffic-handling capacity of member interfaces of a LAG or port
channel bundle. This method of analyzing and tracking the number of packets processed by the member interfaces helps you
manage and distribute the packets that are handled by the LAG bundle. The functionality to detect the working efficiency of the
LAG bundle interfaces is automatically activated on all the port channels, except the port channel that is configured as a VLT
interconnect link, during the booting of the switch. This functionality is supported on I/O Aggregators in PMUX, Standalone, and
VLT modes. By default, this capability is enabled on all of the port channels set up on the switch.
You can use the show link-bundle-distribution port-channel interface-number command to display the
traffic-handling and utilization of the member interfaces of the port channel. The following table describes the output fields of
this show command.
Table 36. Output Field Descriptions for show link-bundle-distribution port-channel Command
Field Description
Link-bundle trigger threshold Threshold value that is the checkpoint, exceeding which
the link bundle is marked as being overutilized and alarm is
generated
LAG bundle number Number of the LAG bundle
Utilization (In Percent) Traffic usage in percentage of the packets processed by the
port channel
Alarm State Indicates whether an alarm is generated if over-utilization of
the port channel occurred. The value, Active, is displayed for
this field.
Link Aggregation 437