Setup Guide
Viewing an ECMP Group
NOTE: An ecmp-group index is generated automatically for each unique ecmp-group when you congure 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 congure ecmp-group with id 2 for link bundle monitoring. This ecmp-group is dierent from the ecmp-group index 2 that is
created by conguring 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 prex route entries and IPv4 /32 prex entries which are moved to
host table can have ECMP. For other platforms, only the IPv6 /128 prex route entries is stored in the L3 host table without ECMP
support.
The software supports a command to program IPv6 /128 route prexes in the host table.
The output of show IPv6 cam command has been enhanced to include the ECMP eld in the Neighbor table of Ipv6 CAM. The sample
output is displayed as follows, which is similar to the prex table.
The following is the portion of the example output:
Neighbor Mac-Addr Port Vid EC
------------------------------------- -------------------------
[ 132] 20::1 00:00:20:d5:ec:a0 Fo 1/49/1 0 1
[ 132] 20::1 00:00:20:d5:ec:a1 Fo 1/50/1 0 1
Support for moving /128 IPv6 Prexes and /32 IPv4 Prexes
The software supports a command to program IPv6 /128 route prexes in the route table. You can dene IPv6 /128 route prexes in the
route table using the
ipv6 unicast-host-routecommand. You can also dene IPv4 /32 route prexes in the host table using the
ipv4 unicast-host-routecommand.
Equal Cost Multi-Path (ECMP)
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