Users Guide

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.
Viewing an ECMP Group
NOTE
: An ecmp-group index is generated automatically for each unique ecmp-group when you congure 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 congure ecmp-group with id 2 for link bundle monitoring. This ecmp-group is dierent from the ecmp-group index 2 that is
created by conguring routes and is automatically generated. These two ecmp-groups are not related in any way.
Dell(conf-ecmp-group-5)#show config
!
ecmp-group 5
interface tengigabitethernet 1/1/2/1
interface tengigabitethernet 1/1/2/2
link-bundle-monitor enable
Dell(conf-ecmp-group-5)#
Support for /128 IPv6 and /32 IPv4 Prexes in Layer 3 Host
Table and LPM Table
IPv6 enhancements utilize the capability on platform to program /128 IPv6 prexes in LPM table and /32 IPv4 prexes in Host table. Also
host table provides ECMP support for destination prexes in the hardware. The platform uses the hardware chip that supports this
behavior and hence they can make use of this capability.
CLI commands are introduced to move /128 IPv6 prex route entries and /32 IPv4 prex route entries from Host table to LPM table and
vice versa. When moving the destination prexes from Route to Host table, there is a possibility of getting into hash collision because the
Host table on the device is a Hash table. In this scenario, a workaround does not exist for the user having route entries programmed in host
table.
When the command is issued, you are prompted with a warning message stating that the command conguration can take eect on
existing prexes only when “clear ip route *” command is used. When you use the clear command, all the existing /32 IPv4 prex route
entries are reprogrammed in appropriate table. Also, all the other existing IPv4 entries are removed and reprogrammed as a result of the
clear command.
Equal Cost Multi-Path (ECMP)
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