Enable link bundle monitoring using the ecmp-group command.NOTE: An ecmp-group index is generated automatically for each unique ecmp-group when you configure multipath routes to thesame network. The system can generate a maximum of 512 unique ecmp-groups. The ecmp-group indexes are generated in evennumbers (0, 2, 4, 6... 1022) and are for information only.For link bundle monitoring with ECMP, to enable the link bundle monitoring feature, use the ecmp-group command. In the followingexample, the ecmp-group with id 2, enabled for link bundle monitoring is user configured. This is different from the ecmp-group index 2 thatis created by configuring routes and is automatically generated.These two ecmp-groups are not related in any way.Example of Viewing Link Bundle MonitoringDell# show link-bundle-distribution ecmp-group 1Link-bundle trigger threshold - 60ECMP bundle - 1 Utilization[In Percent] - 44 Alarm State - ActiveInterface Line Protocol Utilization[In Percent]Te 1/1/1 Up 36Te 1/1/1 Up 52Managing ECMP Group PathsTo avoid path degeneration, configure the maximum number of paths for an ECMP route that the L3 CAM can hold. When you do notconfigure the maximum number of routes, the CAM can hold a maximum ECMP per route.To configure the maximum number of paths, use the following command.NOTE: For the new settings to take effect, save the new ECMP settings to the startup-config (write-mem) then reload thesystem.• Configure the maximum number of paths per ECMP group.CONFIGURATION mode.ip ecmp-group maximum-paths {2-64}• Enable ECMP group path management.CONFIGURATION mode.ip ecmp-group path-fallbackExample of the ip ecmp-group maximum-paths CommandDell(conf)#ip ecmp-group maximum-paths 3User configuration has been changed. Save the configuration and reload to take effectDell(conf)#Creating an ECMP Group BundleWithin each ECMP group, you can specify an interface.If you enable monitoring for the ECMP group, the utilization calculation is performed when the average utilization of the link-bundle (asopposed to a single link within the bundle) exceeds 60%.1 Create a user-defined ECMP group bundle.CONFIGURATION modeecmp-group ecmp-group-idEqual Cost Multi-Path (ECMP) 293
