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Force 10 spanning tree help
Hi,
We have two data centers, each has a pair of S4810's connected together via VLT, in each DC the top switch as a RSTP priority of 4096 and the bottom 8192, so far so good, VLT is happy :)
There is now a business requirement to connect the two DCs together via a L2 sudo-wire so that one VLAN can be stretched across the two DCs. This is because and application needs to fail over for DR and CAN'T be re-ip'ed
What will happen when the connection is made? We need each DC to have a root bridge.
Is there any way to disable RSTP, MSTi PVST on the interface where the sudo-wire will be connected, as there is no way a L2 loop can happen as the DCs are geographically separate.
We are not looking to achieve rooted VLT etc, the objective is to just stretch a single VLAN over and L2 link.
Hope this makes sense and someone can help please?
Anonymous
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December 1st, 2017 08:00
Disabling spanning tree on that interface should work just fine. The command should be:
# no spanning tree 0
Page 764: http://dell.to/2i74cNW
If you left spanning tree enabled, and both switches were set to root, then I believe it would come down to the MAC address to elect root. Your idea of disabling is probably the quickest and easiest method.
austin-t
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December 1st, 2017 12:00
Hi Daniel,
Thanks, I hope your right and the switch has a version of FTOS that supports this.