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lsp-equal-cost

 

Syntax

Hierarchy Level

Release Information

Statement introduced in Junos OS Release 9.6.

Description

Configure label-switched paths (LSPs) to be retained as equal cost paths for load balancing when a better path metric is found during the IS-IS internal routing table calculation.

When a route with an improved metric is added to the IS-IS internal routing table, IS-IS flushes all next-hop information (including LSP next-hop information) for a route. This is undesirable, because certain equal-cost multipath (ECMP) combinations can be lost during route calculation. To override this default IS-IS behavior, include the lsp-equal-cost statement for load balancing, so that the equal cost path information is retained in the routing table.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.