SVI failover?

We've recently stretched a vlan across a layer 2 link (vlan tagged on a trunk) connecting two different datacenters.  I posed a question to a consultant  (DR planning) we've been using regarding the SVI for the stretched vlan.  The SVI is assigned to a switch in DC1 and all servers in this vlan use the svi as their default gateway.  In the event there is an issue with the switch in DC1, the SVI doesn't somehow get assigned to the switch in DC2, correct?  Like a sort of failover scenario for the SVI.

The consultant we've been working with claims this will work but I'm not so sure.  I don't have a lab environment to test this out in so I'm not sure how I can even come up with a good test for it.

I'm thinking if there is a failure with the switch in DC1, we would have to change the default gateway for any servers in that vlan to the svi in DC2.  Unless we use a HSRP or VRRP for failing over that default gateway.

The switches in each datacenter are Cisco 3850s.s
Health Payment SystemsAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Don JohnstonInstructorCommented:
In the event there is an issue with the switch in DC1, the SVI doesn't somehow get assigned to the switch in DC2, correct?
Correct.
The consultant we've been working with claims this will work but I'm not so sure.
Based on the information provided... I'd be looking for a new consultant. ;-)

But there could be some additional information that we're lacking, so they could be thinking about using HSRP or VRRP but haven't gone into that detail yet.
I'm thinking if there is a failure with the switch in DC1, we would have to change the default gateway for any servers in that vlan to the svi in DC2.  Unless we use a HSRP or VRRP for failing over that default gateway.
You are absolutely correct.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Health Payment SystemsAuthor Commented:
To be fair, he is the DR consultant not necessarily the network consultant.  

I just wanted to double check with someone that I was on the right path.  Thanks for the help.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Network Architecture

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.