Install Guide

Table Of Contents
Creating an ECMP Group Bundle
Within 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 (as opposed to a single link within the bundle) exceeds 60%.
1. Create a user-defined ECMP group bundle.
CONFIGURATION mode
ecmp-group ecmp-group-id
The range is from 1 to 64.
2. Add interfaces to the ECMP group bundle.
CONFIGURATION ECMP-GROUP mode
interface interface
3. Enable monitoring for the bundle.
CONFIGURATION ECMP-GROUP mode
link-bundle-monitor enable
Modifying the ECMP Group Threshold
You can customize the threshold percentage for monitoring ECMP group bundles.
To customize the ECMP group bundle threshold and to view the changes, use the following commands.
Modify the threshold for monitoring ECMP group bundles.
CONFIGURATION mode
link-bundle-distribution trigger-threshold {percent}
The range is from 1 to 90%.
The default is 60%.
Display details for an ECMP group bundle.
EXEC mode
show link-bundle-distribution ecmp-group ecmp-group-id
The range is from 1 to 64.
NOTE:
An ecmp-group index is generated automatically for each unique ecmp-group when you configure multipath routes
to the same network. The system can generate a maximum of 512 unique ecmp-groups. The ecmp-group indices are
generated in even numbers (0, 2, 4, 6... 1022) and are for information only.
You can configure ecmp-group with id 2 for link bundle monitoring. This ecmp-group is different from the ecmp-group index
2 that is created by configuring routes and is automatically generated. These two ecmp-groups are not related in any way.
Support for ECMP in host table
ECMP support in the L3 host table is available on the system. IPv6 /128 prefix route entries and IPv4 /32 prefix entries which
are moved to host table can have ECMP. For other platforms, only the IPv6 /128 prefix route entries is stored in the L3 host
table without ECMP support.
The software supports a command to program IPv6 /128 route prefixes in the host table.
The output of show IPv6 cam command has been enhanced to include the ECMP field in the Neighbor table of Ipv6 CAM. The
sample output is displayed as follows, which is similar to the prefix table.
The following is the portion of the example output:
Neighbor Mac-Addr Port Vid EC
------------------------------------- -------------------------
268
Equal Cost Multi-Path (ECMP)