4510R+E Dual sup 8E setup.

[Rich Ahlert]

I'm new to the dual sup setup so please bare with me on this. I have a 4510R+E with dual SUP8E cards. I have the redundancy mode set to SSO and the second sup8E is showing up in standby hot status. My question is, what is the best practice for cabling the 4510 to my 2 6509 vss switches. By that I mean I think I should create a port channel on my one 6509 vss switch pair in my main data center and then create another port channel to connect it to my satellite data center but do I port channel interface te5/1 (the active sup) and te6/1 together to my main data center vss pair then port channel te5/2 and te6/2 to my satellite data center vss pair? 

[Georg Pauwen]

Hello Rich,

can you make a schematic drawing of what you have and post that ?

[Reza Sharifi · Accepted solution]

To connect the 4500 (dual sup) to VSS  you need one Portchannel containing interface te5/1 and 6/1 to your main VSS.  Port te5/1 should connect to primary vss switch and port te6/1 should connect to stand-by vss switch. Use a second Portchannel to connect port te5/2 and 6/2 to the second pair of vss switches in the same way. If the gateways for your vlans are going to be at the core vss, than you simply eliminate the second Portchannel and connect the 2 VSS together.

HTH 

[Joseph W. Doherty]

Ideally, VSS switches should have at least two connections, one from each VSS switch member, to anything that connects to them. (This to avoid the need for any traffic to the other device the need to use the VSS inter switch link.)

If the connection between the VSS switch and your 4500 are L2, it should be Etherchannel.  If L3 it can be Etherchannel or two routed links.  (I would use Etherchannel for L3 too.)

On the 4500, the connection from the VSS switch should be hosted on different line cards and/or supervisors.

[Rich Ahlert]

Thank you Reza. I now have my dual sup 4510 setup and working.