02-17-2016 07:51 AM - edited 03-05-2019 03:21 AM
Hi,
First of all apologies as I am a bit of a newbie but I have a question that I hope some folks on this could possibly shed some light on / lead me down the correct path.
I work in an enterprise campus / branch office style setup. all remote sites are connected over the providers WAN infrastructure (a multipoint l2 cloud), the provider will only carry traffic with an 802.1q tag of 400.
I want to use VRF lite between a number of sites to create a totally isolated segment, however I don't see how I can multiplex an additional VLAN onto the WAN to provide the segregation when the provider will only carry vlan 400.
Im using cisco 4321/1921 ISR's at the branch sites and have been looking into q-in-q but Im not sure as to how I should configure it / is this even possible?
Any ideas?
Thanks in advance :)
02-17-2016 08:04 AM
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Off the top of my head, cannot comment on 4321/1921 configurations for Q-in-Q, but generally what you're describing is how you use Q-in-Q, i.e. pass your VLANs across a provider's VLAN tagged infrastructure.
You should confirm, you provider won't have any issues.
I've only used Q-in-Q once, years ago, and in that case, my edge device was (?) a switch. I also recall, it was very simple to configure.
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