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Community Member

Connecting two MDS switches at site A to two MDS switches at site B

Quick design question as new to MDS switches.

We are looking in purchasing 4 9509 switches. 2 at site A, 2 at site B.

How would we connect the switches across the two sites using two LES1000 links?

Would we create a virtual port-channel between the switches like you can on the Nexus 7000.

Thanks

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Community Member

Re: Connecting two MDS switches at site A to two MDS switches at

LES1000, can you offer more details?  Assuming that what you have is a Gigabit Ethernet link between sites.  If so, you'll need to create FC-IP tunnels between sites.  For that, you'll need something like the MSM (multi-services module) that has 18 FC ports and four Gig-E IP Services ports.

Check the config guides and the cookbook for more details on IP services and FC-IP tunnels.

Cisco Employee

Re: Connecting two MDS switches at site A to two MDS switches at

Correct...if the link is IP between the sites, you need to use the modules with the GE ports.  You can still create multiple FCIP tunnels and then create a port channel of those links.  If the link is dark fibre and the connection will be pure fibre channel, you can create a port channel of multiple fibre channel ISLs.

Remember, the best practice when building port channels is to use links on different modules to avoid a module failure from killing the entire port channel.

Hope this helps,

Mike

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