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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
• ip ecmp-group
• ip ecmp weighted
• link-bundle-distribution trigger-threshold
• link-bundle-monitor enable
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.
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
ecmp-group ID Enter the identifier number for the ECMP group. The range is from 2 to 64.
interface Enter the following keywords and the interface information to add the interface to
the ECMP group:
● For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port/subport information.
● For a 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE
then the slot/port/subport information.
● For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the
slot/port/subport information.
● For a 50-Gigabit Ethernet interface, enter the keyword fiftyGigE then the
slot/port/subport information.
● For a 100-Gigabit Ethernet interface, enter the keyword hundredGigE then
the slot/port information.
● For a LAG interface, enter the keywords port-channel then the slot/port
information.
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
EMC Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
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Equal Cost Multi-Path (ECMP) 567