[c-nsp] ME3600X rewrite push problem

[Pshem Kowalczyk]

Hi,

Any reason for not doing the push (or to be exact 'pop symmetric') on
the remote end (i.e. ASR 9k)?

kind regards
Pshem


On 8 April 2013 09:51, Claes Jansson <claes at gastabud.com> wrote:
> I'm having some problems with qinq and "rewrite ingress tag push dot1q" on
> the ME3600X, running version 15.3(2)S. The problem seems to be that the
> range match of vlans and push of a tag works until the device is reloaded.
> Has anyone else seen this happen?
>
> ME3600X config
>
> This config works until reload.
> --------------------------
> interface GigabitEthernet0/11
>  description ACCESS_SWITCH
>  switchport trunk allowed vlan none
>  switchport mode trunk
>  mtu 2000
>  service instance 1000 ethernet
>   encapsulation dot1q 101-122
>   rewrite ingress tag push dot1q 2011 symmetric
>   xconnect 1.1.1.2 2211100 encapsulation mpls
> !
>
> Workaround
> ----------
> ME3600X-01(config)#int gi0/11
> ME3600X-01(config-if)# service instance 1000 ethernet
> ME3600X-01(config-if-srv)#encapsulation dot1q 666
> ME3600X-01(config-if-srv)#encapsulation dot1q 101-122
>
> Another workaround could be to do 1 service instance per vlan match, since
> that does not seem to trigger the problem...
>
> Trigger error at when running
> -----------------------------
> ME3600X-01(config)#interface GigabitEthernet0/11
> ME3600X-01(config-if)# service instance 1000 ethernet
> ME3600X-01(config-if-srv)#rewrite ingress tag push dot1q 2011
>
> # This will not recover the problem
> ME3600X-01(config-if-srv)#  rewrite ingress tag push dot1q 2011 symmetric
>
> The only way to recover seems to be to change from a range match to a single
> vlan (ie 666) and then back to a range (101-122).
>
>
> The xconnect is then connected to a ASR9K bridge-domain which is then looped
> back to an interface configured with EFP/subints for each customer
> (outer+inner tag). AFAIK this is the only way since you cannot run IPSG and
> DHCP snooping on pw's in BD's on the ASR9K yet... Or if there is a better
> way to do this, please let me know :-)
>
> Tnx!
>
>     //Claes
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