Hi there,
Currently, we're using BGP vrf feature on Switch 3750x and we have created many vrfs for different connections. Our current settings look like,
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router bgp 65000
bgp log-neighbor-changes
timers bgp 5 20
!
address-family ipv4 vrf first-connection
bgp router-id auto-assign
network 192.168.1.0
neighbor 192.168.254.1 remote-as 9059
neighbor 192.168.254.1 password ***password***
neighbor 192.168.254.1 activate
neighbor 192.168.254.5 remote-as 9059
neighbor 192.168.254.5 password ***password***
neighbor 192.168.254.5 activate
exit-address-family
!
address-family ipv4 vrf second-connection
bgp router-id auto-assign
network 192.168.2.0
neighbor 192.168.254.254.9 remote-as 9059
neighbor 192.168.254.9 password ***password***
neighbor 192.168.254.9 activate
neighbor 192.168.254.13 remote-as 9059
neighbor 192.168.254.13 password ***password***
neighbor 192.168.254.13 activate
exit-address-family
!
...
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As you see, we duplicated "bgp router-id auto-assign" in each BGP vrf setting, now we're proposing to use "bgp router-id vrf auto-assign" for all vrfs instead of above each individual settings, the commands we will enter are,
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conf t
router bgp 65000
bpg router-id vrf auto-assign
address-family ipv4 vrf first-connection
no bgp router-id auto-assign
exit
address-family ipv4 vrf second-connection
no bgp router-id auto-assign
exit
end
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The result would be as,
***************************************************
router bgp 65000
bgp router-id vrf auto-assign
bgp log-neighbor-changes
timers bgp 5 20
!
address-family ipv4 vrf first-connection
network 192.168.1.0
neighbor 192.168.254.1 remote-as 9059
neighbor 192.168.254.1 password ***password***
neighbor 192.168.254.1 activate
neighbor 192.168.254.5 remote-as 9059
neighbor 192.168.254.5 password ***password***
neighbor 192.168.254.5 activate
exit-address-family
!
address-family ipv4 vrf second-connection
network 192.168.2.0
neighbor 192.168.254.254.9 remote-as 9059
neighbor 192.168.254.9 password ***password***
neighbor 192.168.254.9 activate
neighbor 192.168.254.13 remote-as 9059
neighbor 192.168.254.13 password ***password***
neighbor 192.168.254.13 activate
exit-address-family
!
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Here is my question, because the Router IDs may be affected by the above commands, so will the above commands result in some vrfstemporarily down for a while (for example, 30 seconds offline)? I'm not quite sure on whether Router ID will be reset because every VRF has its own Router ID now.
Thanks for the help.
Ray
