Administrator Guide

Following is the show running-config command output for the above configuration.
DellEMC# show running-config bgp
!
router bgp 655
bgp router-id 1.1.1.1
neighbor 10.1.1.2 remote-as 20
neighbor 10.1.1.2 auto-local-address
neighbor 10.1.1.2 no shutdown
!
address-family ipv6 unicast
neighbor 10.1.1.2 activate
exit-address-family
!
Example configuration performed in R2
DellEMC# configure terminal
DellEMC(conf)# router bgp 20
DellEMC(conf-router_bgp)# neighbor 10.1.1.1 remote-as 655
DellEMC(conf-router_bgp)# neighbor 10.1.1.1 no shutdown
DellEMC(conf-router_bgp)# address-family ipv6 unicast
DellEMC(conf-router_bgpv6_af)# neighbor 10.1.1.1 activate
DellECM(conf-router_bgpv6_af)# exit
Following is the show running-config command output for the above configuration.
DellEMC# show running-config bgp
!
router bgp 20
neighbor 10.1.1.1 remote-as 655
neighbor 10.1.1.1 no shutdown
!
address-family ipv6 unicast
neighbor 10.1.1.1 activate
exit-address-family
!
Following is the show ip bgp ipv6 unicast command output for the above configuration.
DellEMC# show ip bgp ipv6 unicast
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
BGP local router ID is 1.1.1.1
Status codes: s suppressed, S stale, d dampened, h history, * valid, > best
Path source: I - internal, a - aggregate, c - confed-external, r - redistributed
n - network, D - denied, S - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2001::/64 2001::1 0 0 655 ?
*> 3001::/64 3001::1 0 0 655 ?
*> 4001::/64 3001::1 0 0 655 ?
*> 5001::/64 3001::1 0 0 655 ?
BGP Regular Expression Optimization
Dell EMC Networking OS optimizes processing time when using regular expressions by caching and re-using regular expression evaluated
results, at the expense of some memory in RP1 processor.
BGP policies that contain regular expressions to match against as-paths and communities might take a lot of CPU processing time, thus
affect BGP routing convergence. Also, show bgp commands that get filtered through regular expressions can to take a lot of CPU
cycles, especially when the database is large.
This feature is turned on by default. If necessary, use the bgp regex-eval-optz-disable command in CONFIGURATION ROUTER
BGP mode to disable it.
Border Gateway Protocol (BGP)
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