Connectivity Guide

• For resilient hashing on ECMP groups, the ECMP path must be in multiples of 64. Before you enable resilient hashing, ensure that the
maximum ECMP path is set to a multiple of 64. You can congure this value using the ip ecmp-group maximum-paths
command.
Maximum ECMP groups and paths
The maximum number of ECMP groups supported on the switch depends on the maximum ECMP paths congured on the switch. To view
the maximum number of ECMP groups and paths, use the show ip ecmp-group details command.
OS10# show ip ecmp-group details
Maximum Number of ECMP Groups : 256
Maximum ECMP Path per Group : 64
Next boot configured Maximum ECMP Path per Group : 64
The default value for the maximum number of ECMP paths per group is 64. This value is congurable and you can congure a maximum of
up to 128 ECMP paths per group.
The Maximum ECMP Path per Group is the current value congured in the hardware. The Next boot configured Maximum
ECMP Path per Group is the value that is congured for maximum ECMP path and will take eect after the next reboot.
You can increase or decrease the maximum number of ECMP groups using the ip ecmp-group maximum-paths number command.
The number of ECMP groups is inversely proportional to the number of ECMP paths.
To congure maximum paths per ECMP route:
OS10# configure terminal
OS10(config)# ip ecmp-group maximum-paths 10
OS10(config)# exit
OS10# write memory
OS10# reload
ECMP commands
enhanced-hashing
Ensures that existing trac ows are not remapped when a member link goes down.
Syntax
enhanced-hashing resilient-hashing {lag | ecmp}
Parameters
• resilient-hashing—Enter the keyword to enable enhanced-hashing.
• {ecmp | lag}—Enter the keyword to enable resilient hashing for a port channel or ECMP group.
Defaults Disabled
Command Mode CONFIGURATION
Usage Information
The no version of this command disables resilient hashing. For supported platforms, see Supported platforms.
Example
OS10(config)# enhanced-hashing resilient-hashing ecmp
OS10(config)# enhanced-hashing resilient-hashing lag
Supported Releases 10.4.3.0 or later
Layer 3 497