2960# ! interface GigabitEthernet0/5 description ::3560 Link1 switchport trunk allowed vlan 3333 switchport mode trunk spanning-tree portfast trunk ip igmp filter 1 ! interface GigabitEthernet0/6 description ::3560 Link2 switchport trunk allowed vlan 7777 switchport mode trunk spanning-tree portfast trunk ip igmp filter 1 ! ! interface GigabitEthernet0/7 description ::LAN SWITCH switchport mode trunk macro description cisco-switch spanning-tree portfast trunk spanning-tree link-type point-to-point ip igmp filter 1 ! ! interface GigabitEthernet0/8 description ::2900 QoS switchport trunk allowed vlan 10,20 switchport mode trunk spanning-tree portfast trunk ip igmp filter 1 ! 3560#sh run ! ! ! ! ! spanning-tree mode rapid-pvst spanning-tree logging spanning-tree portfast default spanning-tree extend system-id ! vlan internal allocation policy ascending ! ! ! ! ! interface GigabitEthernet0/1 ! interface GigabitEthernet0/2 ! interface GigabitEthernet0/3 ! interface GigabitEthernet0/4 ! interface GigabitEthernet0/5 switchport trunk encapsulation dot1q switchport trunk allowed vlan 3333 switchport mode trunk ip flow ingress ip flow egress ! interface GigabitEthernet0/6 switchport trunk encapsulation dot1q switchport trunk allowed vlan 7777 switchport mode trunk ip flow ingress ip flow egress ! interface GigabitEthernet0/7 ! interface GigabitEthernet0/8 ! interface GigabitEthernet0/9 ! interface GigabitEthernet0/10 ! interface Vlan2 ip address 1.2.3.4 255.255.255.224 ip ospf message-digest-key 10 md5 7 3715050250801282A2A25BC ! ! interface Vlan 3333 description ISP Link 1 ip address 11.11.11.9 255.255.255.252 ! interface Vlan7777 description ISP Link 2 ip address 22.22.22.21 255.255.255.252 ! ! router ospf 1 router-id 1.2.3.4 area 0 authentication message-digest redistribute connected subnets redistribute static subnets network 1.2.3.0 0.0.0.31 area 0 ! ! router bgp 54321 bgp router-id 1.2.3.4 bgp log-neighbor-changes network 1.2.3.0 mask 255.255.248.0 neighbor 11.11.11.10 remote-as 55555 neighbor 11.11.11.10 transport path-mtu-discovery neighbor 11.11.11.10 password 7 1231415151B1E5429203557 neighbor 11.11.11.10 update-source Vlan3333 neighbor 11.11.11.10 soft-reconfiguration inbound neighbor 22.22.22.22 remote-as 44444 neighbor 22.22.22.22 transport path-mtu-discovery neighbor 22.22.22.22 update-source Vlan7777 neighbor 22.22.22.22 soft-reconfiguration inbound no auto-summary ! ! end **** MY ASR CONFIG****** I'm not sure on the syntax update-source interface (is interface local or remote?) (ASR do not accept update-source VLAN... The ISP only give us VLAN number as the source of update. Both VLAN will pass through same interface g0/0/0 of the ASR) ASR: ! ! interface GigabitEthernet0/0/0 no ip address no negotiation auto ! interface GigabitEthernet0/0/0.10 encapsulation dot1Q 10 ip address 1.2.3.5 255.255.255.224 ip flow ingress ip flow egress ip ospf message-digest-key 10 md5 7 61503502085012862A2A2C ! interface GigabitEthernet0/0/0.3333 description ISP LINK1 encapsulation dot1Q 3333 ip address 11.11.11.9 255.255.255.252 ! interface GigabitEthernet0/0/0.7777 description ISP LINK2 encapsulation dot1Q 7777 ip address 22.22.22.21 255.255.255.252 ! ! router bgp 54321 bgp router-id 1.2.3.5 bgp log-neighbor-changes network 1.2.3.0 mask 255.255.248.0 neighbor 11.11.11.11 remote-as 55555 neighbor 11.11.11.11 transport path-mtu-discovery neighbor 11.11.11.11 password 7 1231415151B1E5429203557 neighbor 11.11.11.11 update-source g0/0/0.3333 neighbor 11.11.11.11 soft-reconfiguration inbound neighbor 22.22.22.22 remote-as 44444 neighbor 22.22.22.22 transport path-mtu-discovery neighbor 22.22.22.22 update-source g0/0/0.7777 neighbor 22.22.22.22 soft-reconfiguration inbound no auto-summary ****