Extreme core switch and Top of rack switches

[Asifi]

Hello Community,

I have a setup question.  I have 2 sites with and Extreme 8404 core switch at each site.

I have 2x top of rack switches in a port channel on each site going into their respective Extreme core ports.

However, I do not have a core connection from Extreme core switch site A to top of rack site B and Extreme core switch site B to top of rack switch site A.

Can anyone advise the best way to do this please?

I have a fibre link between the the 2 sites with free fibre cores to use.  The top of rack switches are currently using 2 core ports at each site going into the Extreme core switch (LACP).

The below is what I need.

Any thoughts or advice?

Thanks in advance.

[Asifi]

@XTRMUser  - many thanks for your reply.  This is what I was thinking too.  For Site A:

• TOR switches stacked.
• 1x 10GB link to Extreme site A
• 1x 10GB link to Extreme site B
• Extreme site A and B 10GB ports in MLT
• Similar for Site B.

Currently I have this setup in MLT with no port members assigned so it's classed as a NormalMLT.  I'm thinking once setup and the correct port members are assigned this will change to SplitMLT.

I am also thinking have 2 MLT's.  One for each pair of TOR switches from site A to site B rather than 1 MLT with 2 port members? Is this  how you would do this?

Many thanks,