Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Distributed Vlan for Provisioning in a distributed Layer 3 environment

I was curious to know if anyone had any ideas on the best way to go about this..

We have moved to a layer 3 core and distribution layer in our datacenter, with layer 2 out to the access layer. We are now considering building a provisioning network for kickstarting linux boxes.

I would need the vlan for the provisioning network to live on pretty much every switch in the environment. In a pure layer 2 design, obviously this is quite easy to do. With the distributed layer 3 design, there is no layer 2 connectivity currently between different networks. Everything hits the distribution, then goes layer 3 to the core.

Obviously I could link all the distribution switches in a layer 2 ring setup, and trunk this vlan to all of them. I don't really like that idea. I would also like to keep layer 2 out of the core if possible.

I was curious if any one had designed such a setup..


Hall of Fame Super Silver

Re: Distributed Vlan for Provisioning in a distributed Layer 3 e

Hello Cristopher,

I would do the following:

I would use the VRF lite concept to create a L3 separated routing table

I suppose that the requirement for a L2 vlan comes from the desire to keep these new boxes separarated.

VRF lite or MPLS VPN with the distribution nodes acting as PE nodes can be a good solution.

Hope to help


CreatePlease login to create content