Make sure the port mtu is higher to allow for additional vlan tags. 4 byte per vlan. On Jul 14, 2016 7:11 AM, "David Wilkinson" <[email protected]> wrote:
> Hi, > > We are in the process of migrating some of our links over to Cisco ASR > 9006, they are running IOS XR 5.3.3. > > Normal vlan tagged dot1q traffic seems be working fine, apart from some > STP fun when pseudowire comes back up and STP doesn't know about the > topology changing and both paths are forwarding for a short time. I don't > think there is away around this as the ASR just passes on the STP traffic > and doesn't take part STP. > > QinQ traffic doesn't seem to be going via ASR correctly and just > disappears. > > It is currently setup like this, The customer port plugs in a Cisco 4948 > and the port is configured as a dot1q-tunnel. the port from the 4948 to ASR > is configured as a trunk port and the same in reverse to the customer's > other port. > > Customer -> Cisco 4948 -> Cisco ASR 9k -> Cisco 4948 -> Customer > > On the ASR I am picking up the QinQ vlan on sub interfaces, adding it to a > bridge domain. > Below is the configuration I am using > > ---- ASR ---- > > interface GigabitEthernet0/0/0/17.427 l2transport > encapsulation dot1ad 427 > l2protocol cpsv tunnel > > interface Bundle-Ether2.427 l2transport > encapsulation dot1ad 427 > l2protocol cpsv tunnel > > l2vpn > bridge group cust-a > bridge-domain cust-a-qinq > interface Bundle-Ether2.427 > ! > interface GigabitEthernet0/0/0/17.427 > > --- 4948 --- > > interface GigabitEthernet1/1 > switchport access vlan 427 > switchport mode dot1q-tunnel > l2protocol-tunnel cdp > l2protocol-tunnel stp > l2protocol-tunnel vtp > > interface GigabitEthernet1/48 > switchport trunk encapsulation dot1q > switchport trunk allowed vlan 155,203,204,427,428 > switchport mode trunk > > > On the ASR if I change the encapsulation from dot1ad 427 to dot1q 427, > then STP blocks with an inconsistent peer vlan message. > > %SPANTREE-2-RECV_PVID_ERR: Received BPDU with inconsistent peer vlan id 1 > on GigabitEthernet1/48 VLAN427. > %SPANTREE-2-BLOCK_PVID_LOCAL: Blocking GigabitEthernet1/48 on VLAN0427. > Inconsistent local vlan. > > Can any one point me in the right direction and let me know what I have > done wrong, I am assuming it something on the ASR configuration as QinQs > between the 4948s taking another path without the ASR in the middle work > fine. > > Thanks > > David > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
