[c-nsp] ASR 1002X and SPA-10X1GE-V2

[Brian Turnbow]

Hi Fabio,

You need to use bridge domains and evc style configuration on the asr1000s for l2 forwarding.
BDI interfaces can serve for l3 , like a bvi on ios

So you need something like   this for l2 forwarding


interface GigabitEthernet0/0/0
service instance 1 ethernet
encapsulation dot1q 1
bridge-domain 1

interface GigabitEthernet0/0/1
service instance 1 ethernet
encapsulation dot1q 1
bridge-domain 1

Brian

> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
> Fabio Mendes
> Sent: giovedì 24 settembre 2015 17:42
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] ASR 1002X and SPA-10X1GE-V2
> 
> Hi,
> 
> A couple of months ago we bought a couple of ASR-1002Xs with 10X1GE-V2
> cards on each one. Those cards are on slot 0/1
> 
> We were told by the pre-sales person to believe that those modules would
> allow us to create an L2 tagged link between the two routers, behaving
> similarly to a switch.
> 
> I found it a bit of strange initially, but we have some CGR 2010s with GRWIC-D-
> ES-2s-8PCs and that module basic allow us to establish a session to it and
> configure it as if you were connected to a real switch. You can configure all
> ports belonging to the module with switchport, spanning tree and all other L2
> commands.
> 
> I thought the 10X1GE-V2 module would have the same behavior.
> 
> Well, yesterday I went to configure it and even after extensive researches
> through Cisco documentation, it turns out that I couldn't find a way to set it up
> as a pure tagged L2 port.
> 
> Our topology is something like:
> 
> 
> 
>   +---+                   +---+
> 
>   |CE1|                   |CE2|
> 
>   +---+                   +---+
> 
>     | Gi0/0/0               | Gi0/0/0
> 
>     |                       |
> 
>     |                       |
> 
>     |                       |
> 
>     |                       |
> 
>     |                       |
> 
>     |                       |
> 
> ---------10.64.212.64/28---------
> 
>     |                       |
> 
>     |                       |
> 
>     |                       |
> 
>     |                       |
> 
>     |                       |
> 
>     |                       |
> 
>     |Gi0/1/0                | Gi0/1/0
> 
> +----+                     +----+
> 
> |ASR1|---------p2p---------|ASR2|
> 
> +----+ Gi0/1/5     Gi0/1/5 +----+
> 
> 
> 10.64.212.64/28 will be on OSPF area 0.
> 
> The entire subnet should communicate through the p2p link (Gi0/1/5
> interfaces on each ASR).
> 
> From what I could find, it's no possible to configure those ports as a pure
> L2 port, so I'll probably have to use an l2vpn, L2 pseudowire or EVC solutions
> instead.
> 
> My question is, is it possible to configure those modules as a pure L2 links or
> I'm missing something here?
> 
> I even have some "interface VLAN" commands available on the IOS, but they
> report as invalid after I issue them.
> 
> 
> Thanks,
> 
> Fabio
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