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Webcast-Catalyst9k
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VLAN Solution

Hi Gurus,

Im not sure if QinQ is applicable here. Im worried i will use my 4000+ vlan on my metro. Is this applicable using subinterface on router? Please see my diagram.

tia.

1 REPLY

Re: VLAN Solution

That should be possible, but where would you terminate VLAN2, 3 & 4 ?

It is possible to terminate these vlans on the router if the latter supports double tagged subif like 7206 for example.

since you have 3 edge switches pushing same inner tagged vlans, you will need to consider secondary IPs (I have not tested this part).

Router(config)#interfacegigabitEehernet1/0.100

Router(config-subif)# encapsulation dot1q 100 second-dot1q 2.

If you are planning on using ACL on Router, PVLAN would be useful in this scenario to take care of L2 cross talk.

HTH

Sam

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