Users Guide

Link Bundle Monitoring
Monitoring linked LAG bundles allows traffic distribution amounts in a link to be monitored for unfair
distribution at any given time. A threshold of 60% is defined as an acceptable amount of traffic on a member
link.
Links are monitored in 15-second intervals for three consecutive instances. A syslog and an alarm will be
activated when the average of the bundle utilization is greater than the trigger threshold, and the delta
deviation between the lowest and highest utilized links that part of the ECMP or the Port-Channel is > 10%
When the deviation clears, another Syslog sends and a clear alarm event generates.
The link bundle utilization is calculated as the total bandwidth of all links divided by the total bytes-per-
second of all links. If you enable monitoring, the utilization calculation is performed when the utilization of
the link-bundle (not a link within a bundle) exceeds 60%.
To enable and view link bundle monitoring, use the following commands.
• Enable link bundle monitoring.
ecmp-group
• View all LAG link bundles being monitored.
show running-config ecmp-group
Link bundle monitoring can be also enable on port-channels, here it is the way it can be configured:
interface Port-channel 111
no ip address
switchport
no shutdown
link-bundle-monitor enable
To view the links that are being monitored, use the show link-bundle-distribution command.
Dell(conf-if-po-111)#do show link-bundle-distribution
Link-bundle trigger threshold - 22
LAG bundle - 111 Utilization[In Percent] - 25 Alarm State - Active
Interface Line Protocol Utilization[In Percent]
PeGi 255/1/36 Up 25
PeGi 255/1/37 Up 25
PeGi 255/2/38 Up 25
PeGi 255/2/39 Up 50
PeGi 255/3/40 Up 0
PeGi 255/3/45 Up 25
Interfaces 528