6509 Redundancy Physical question

HI there,

Wondering if someone can help out with a 6509  redundancy question.    I have read so much information  that It has all become a blurr.

We have two 6509's   each with dual SUP2/MFSC's  side by side in our core.   They are in Hybrid mode with  8.3 (6)  software.  

What we are trying to accomplish is  to have good redundancy and failover.  

So far we have gotten both supervisors configured with  HA and redundancy in single router mode.  The config's are copying fine and  the sh mod shows that we have a standby and active sups.

What we would like to do in a maintenance window is test the failover capability and ensure that ii is working as desired.  

How does the physical connectivity work,  we were assuming that we could just criss cross the GBIC's on the Sups to ensure that no matter what the failover situation, the active sup would have a path to the other .  When we attempted this it appears as if the GBIC on the standby sup is active ?   Is this something to worry about?  

Or is an Etherchannel solution the better option. ?  

If you need any further clarification I can provide more details.


Thanks for you time

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

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:
If you're talking about redundancy between the two 6500's, you'll need interconnections between the two switches (and yes, the ports on the standby sup's are functioning).

If you have more than one link (and they're layer 2) spanning tree will block all but one. Etherchannel may provide more usable bandwidth so that's definitely an option.

If the links are layer 3, then you'll need a routing protocol (EIGRP, OSPF, etc.) running between the two 6500's.
netnorthAuthor Commented:
Ultimately the solution that we took for this was to upgrade our CAt OS to the latest, as well and memory upgrades to the SUP2's so that we could upgrade the IOS to the newest version that would support NSF/SSO.   In the process we needed to upgrade the ROMMON on both the layer 2 and 3 sides of the sups.   Overall th eexcercise was performed on our lab gear and we learned alot about the boot load process of the 6509's  

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
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

From novice to tech pro — start learning today.