Administrator Guide

Equal Cost Multi-Path (ECMP)
Equal cost multi-path (ECMP) supports multiple "best paths" in next-hop packet forwarding to a destination device.
Topics:
• ecmp-group
• hash-algorithm ecmp
• hash-algorithm hg
• hash-algorithm hg-seed
• hash-algorithm seed
• ip ecmp-group
• ip ecmp weighted
• link-bundle-distribution trigger-threshold
• link-bundle-monitor enable
• show config
• show link-bundle distribution
ecmp-group
Provides a mechanism to monitor traffic distribution on an ECMP link bundle. A system log is generated when the standard
deviation of traffic distribution on a member link exceeds a defined threshold.
C9000 Series
Syntax
ecmp-group {ecmp-group-id interface interface | link-bundle-monitor}
To remove the selected interface, use the ecmp-group no interface command.
To disable link bundle monitoring, use the ecmp-group no link-bundle-monitor command.
Parameters
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
ecmp-group ID Enter the identifier number for the ECMP group. The range is from 1 to 64.
interface Enter the following keywords and slot/port to add the interface to the ECMP
group:
● 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then
the slot/port information.
● 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/
port information
● For a LAG interface, enter the keywords port-channel then the slot/port
information. The range is from 1 to 128.
Defaults Off
Command Modes
● CONFIGURATION
● CONFIGURATION ECMP-GROUP
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
14
648 Equal Cost Multi-Path (ECMP)