Two StackWise

[NET_RANGER]

Hi! Is possible to physically connect 2 StackWise's (consist with 3750) in 1 network, where VTP is using?

[Bilal Nawaz · Accepted solution]

Yes - if you have 2 3750 stacks then you can use them in the same network where VTP is used. Ensure that you configured VTP securely so that your vlan base doesn't get wiped out.

[NET_RANGER]

Yeah, I had assumed about that. But how? Physically

[Bilal Nawaz]

It depends, what is the purpose of these switch's, what is it that is going to be plugged in? Where do you plan to connect them? Any resilience required?

[NET_RANGER]

Both stacks will serve for OSPF's areas, VLAN's/VTP. To the first stack will plugged user's and this stack will be connected with ISP link, and the second stack will connected with a servers. Either first and second stacks are located in a switching rack.

[Bilal Nawaz]

Do you have a "core" or is this a new network you are building? You need to ensure that you have ipservices IOS or license for OSPF (i think). If these are 2 3750 stacks you can create point to point OSPF links between them - ideally a cross-stack port-channel for redundancy and resiliency, use one point to point /30 either using an SVI or just L3 Po interface for routing.

[NET_RANGER]

No, we will do it's on existing network. And how VTP can be configured here? 2 masters with VTP server on them?

[Bilal Nawaz]

I think you should do both of them in transparent mode, unless you have a need to use VTP server client or server server relationship.

[NET_RANGER]

We decided to do it via Cisco ASA, which will be placed between 2 stacks. But your answers will be useful. Thanks for answers.