Administrator Guide

Layer 3 Routing Commands 1276
(R1)(config)# ip extcommunity-list 10 permit rt 1:1
(R1)(config)# route-map SEND_OUT permit 10
(R1)(config-route-map)# match extcommunity 10
(R1)(config-route-map)# set extcommunity rt:10:10 additive
(R1)(config-route-map)# exit
maximum-paths (BGP Router Configuration)
Use this command to specify the maximum number of next hops BGP may
include in an Equal Cost Multipath (ECMP) route derived from paths
received from neighbors outside the local autonomous system.
Syntax
maximum-paths number-of-paths
no maximum-paths
• number-of-paths —The maximum number of next hops in a BGP route.
The range is from 1 to 32 unless the platform or SDM template further
restricts the range.
Default Configuration
BGP advertises a single next hop by default.
Command Mode
BGP Router Config
User Guidelines
Paths are considered for ECMP when their attributes are the same (local
preference, AS path, origin, MED, peer type and IGP distance). When BGP
uses multiple paths in an ECMP route, BGP still selects one path as the best
path and advertises only that path to its peers.
The following ranges are supported:
•N40xx—1-4
•N30xx—1-16
•N20xx—1-1
2CSNXXX_SWUM204.book Page 1276 Monday, January 25, 2016 1:25 PM