Hi Ven, do you have working config for multiple service instances per interface (like switchport trunk on a switch)?
Local switching works for me when I use one interface per Vlan, single service instance per interface on ASR. Unable to make it working when I try to add second service instance on interface and make it switchport trunk on the connected switch (N7K). The config is below, when "service instance 23 ethernet" sits on another phy interface it works. Once i add it to this interface as second instance, it doesn't work (another int is shut). Switch sees ASR via cdp, but ASR doesn't see the switch in this case.
interface GigabitEthernet0/1/2 no ip address negotiation auto cdp enable service instance 21 ethernet encapsulation dot1q 21 ! rewrite ingress tag translate 1-to-1 dot1q 21 symmetric bridge-domain 21 ! service instance 23 ethernet encapsulation dot1q 23 bridge-domain 23
interface BDI21 ip address 192.168.253.209 255.255.255.240 ip nat inside ip policy route-map PBR-GOOGLE cdp enable ! interface BDI23 ip address 10.1.1.1 255.255.255.0 cdp enable !
I may be mistaken, but I don't think it will work like that for you.
I couldn't get the ASRs to do BDI's like that. This is the "old-school" method of doing BDI.
In it's simplest form, the ASR will "bridge" or "locally switch" when two physical interfaces are identified with the same service instance. Put simply, if two physical interfaces are configured with the same service interface and bridge-domain ID, packets with the proper vlan tag coming into one interface will locally switch out of the other interface.
Can you provide a quickie diagram of what you're trying to accomplish?
thank you for taking time. I actually figured out where i was mistaken and was going to update my post so someone may benefit later. The key is to have appropriate "encapsulation" statement on BDI interface as well, matching the bridge-domain and encap numbers in Service Instance part.
I am basically doing a router on stick, having N7K as a switch with trunk going to ASR as a router on stick and doing inter-vlan routing. The BDI interfaces are serving as Interface-Vlan interfaces here. It works.
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