Service Manual

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
• hash-algorithm ecmp
• hash-algorithm seed
• ip ecmp-group
• ip ecmp weighted
• link-bundle-monitor enable
• link-bundle-distribution trigger-threshold
• show cong
• show link-bundle distribution
ecmp-group
Provides a mechanism to monitor trac distribution on an ECMP link bundle. A system log is generated when the standard deviation of
trac distribution on a member link exceeds a dened 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 identier 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 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.
Defaults O
Command Modes
• CONFIGURATION
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Equal Cost Multi-Path (ECMP) 581