Very simple setup of BGP and advertising networks.
Version 10.05.0020
Switch 1
1. Create your Vlan interfaces
vlan 100
name BGP-1
interface vlan 100
ip address 20.20.20.254/24
2. Set up interface
interface 1/1/5
no shutdown
no routing
vlan trunk native 1
vlan trunk allowed 100
3. Set up BPG
router bgp 1234
bgp router-id 20.20.20.254
neighbor 20.20.20.253 remote-as 12345
address-family ipv4 unicast
neighbor 20.20.20.253 activate
exit
exit
// The route-id we are using as the "interface vlan id"... this does not have to be like this... you could set this up as 1.1.1.1 if you would like. Keep in mind though that if you change it the BGP setup will have to rebuilt itself.
// The "neighbor" will be the other side of our BGP peer
// neighbor "20.20.20.253 activate" will actually enable the routes to transverse between BGP peers
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Switch 2
1. Create your Vlan interfaces
vlan 100
name BGP-1
vlan 200
name test-vlan
interface vlan 100
ip address 20.20.20.253/24
interface vlan 200
ip address 30.0.0.254/24
2. Set up interface
interface 1/1/5
no shutdown
no routing
vlan trunk native 1
vlan trunk allowed 100
interface 1/1/7
no shutdown
no routing
vlan trunk native 1
vlan trunk allowed 200
3. Set up BPG
router bgp 12345
bgp router-id 20.20.20.253
neighbor 20.20.20.254 remote-as 1234
address-family ipv4 unicast
neighbor 20.20.20.254 activate
network 30.0.0.0/24
exit
exit
// Notice that we have added "network 30.0.0.0/24" to our BGP setup... this is the network that we are advertising out through BGP. If we go back to Switch 1 we can run "show ip route bgp" and we will see that this network is being advertised through BGP and we are able to ping it.
show bgp ipv4 unicast neighbors
show bgp ipv4 unicast summary
