[c-nsp] ASR902 vs ME3800X

Eric Van Tol eric at atlantech.net
Thu Mar 26 11:41:56 EDT 2015


> -----Original Message-----
> From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Mark
> Tinka
> On 26/Mar/15 17:04, Eric Van Tol wrote:
> >
> > I did quite a bit of testing in our lab prior to deployment, mainly to see
> if there was feature parity with the ME3600.  Configuration and feature-
> wise, they were nearly identical, at least with regard to what we provide or
> plan to provide.  It did take me some time to figure out how to get an "SVI"
> onto it, as I've never worked with IOS-XE and the documentation for the
> ASR920 is/was just terrible/incomplete.
> 
> Is it different from SVI's on the ME3600X/3800X?

Only in the sense that an "SVI" on the ASR920 is a BDI.  Of course, ports can have IP addresses applied directly to them, but in order to perform switching or VLAN trunking, service instances and BDIs are required:

interface GigabitEthernet0/0/0
 mtu 9216
 no ip address
 load-interval 30
 negotiation auto
 service instance 8 ethernet
  encapsulation dot1q 8
  rewrite ingress tag pop 1 symmetric
  bridge-domain 8
 !
 service instance 600 ethernet
  encapsulation dot1q 600
  rewrite ingress tag pop 1 symmetric
  bridge-domain 600
 !
!
interface BDI600
 ip address x.x.x.x 255.255.255.252
 ip verify unicast reverse-path
end

And yes, it looks like uRPF works.  :-)

-evt


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