OS10 Enterprise Edition User Guide Release 10.4.1.0

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Aggregate routes

OS10 provides multiple ways to aggregate routes in the BGP routing table. At least one route of the aggregate must be in the routing table for the configured aggregate route to become active. AS_SET includes AS_PATH and community information from the routes included in the aggregated route.

  1. Assign an AS number in CONFIGURATION mode.
    router bgp 
                                           as-number
                                        
  2. Enter Address Family mode in ROUTER-BGP mode.
    address-family {[ipv4 | ipv6] [unicast]}
  3. to aggregate in ROUTER-BGPv4-AF mode.
    aggregate-address 
                                           ip-address mask 
                                        

Configure aggregate routes

OS10(config)# router bgp 105
                                 OS10(conf-router-bgp-105)# address-family ipv4 unicast 
                                 OS10(conf-router-bgpv4-af)# aggregate-address 3.3.0.0/16
                              

View running configuration

OS10(conf-router-bgpv4-af)# do show running-configuration bgp
                                 ! Version 
                                 ! Last configuration change at Jul  27 06:51:17 2016
                                 !
                                 !
                                 router bgp 105
                                 !
                                 address-family ipv4 unicast
                                 aggregate-address 3.3.0.0/16
                                 !
                                 
                                 neighbor 32.1.1.2
                                 remote-as 104
                                 no shutdown
                                 !
                                 address-family ipv4 unicast
                              

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