[c-nsp] QinQ config sample on Cisco 7600/6500

["Rolf Hanßen"]

Hi,

nobody an idea about this ?
Cannot be i am the first one trying to run/built such setup or migrating
from a platform that can do it. ;)

kind regards
Rolf

> Hello,
>
> I am quite new to Cisco and look for some configuration help.
> We used Foundry last 5 years and now started to add/integrate 7600/6500
> boxes to the existing network.
>
> What I am searching for is a Cisco/IOS version of Foundry style hardcoded
> QinQ transport vlan like:
> vlan 123
>  tagged e 1/1
>  untagged e 1/2
> exit
> tag-type 9100 ethe 1/2
>
> 1/1 is a port with several vlans towards other equipment of me.
> 1/2 is a customer port with tagged + untagged vlans (I do not know/care
> what ids they use)
>
> All I can find is several howtos saying to configure something like that
> here on the customer port:
> switchport
> switchport mode dot1q-tunnel
>
> When trying to set the above commands I get that error:
> Gi4/48 doesn't support 802.1q tunneling.
> My linecard is a WS-X6548-GE-TX, does that mean I cannot use QinQ here or
> is there another way ?
> Same config on a WS-X6724-SFP is accepted.
>
> What I cannot find is where to set the vlan id that I use on my router
> (i.e. the outer tag like 123 in the Froundry config).
> Do I need to configure it like an access port or is there a setting
> somewhere else ?
> Port towards my equipment will be on a WS-X6704-10GE card.
>
> Furthermore I read about setting "vlan dot1q tag native" to support
> forwarding of untagged frames.
> How does this work if I do not know the vlans used by my custimer and
> therefore cannot set an ID for untagged ?
> Is untagged traffic dropped then or does it work anyway ?
>
> Concerning the MTU:
> Do I need to increase the ports manually or is there a setting like
> "aggregated-vlan" on some Foundrys that increases all MTUs for QinQ ?
> Does increasing the interface MTUs have some side-effects to take care
> about if I do not touch the vlan mtu and the MTUs of the Layer3 vlan
> interfaces ?
>
> Concerning learning of MAC-adresses:
> On Foundry (MLX/XMR) you can turn off learning of MAC-adresses on vlans
> with only 2 ports ("transparent-hw-flooding") to save ressources.
> Is there an equivalent that should be used on Cisco ?
>
> Software used is 15.1(2)S, devices are only used for usual switching +
> routing (OSPF+BGP, MTU 1500, no MPLS) at the moment.
>
> kind regards
> Rolf
>
>
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