11-28-2012 02:09 AM - edited 03-07-2019 10:17 AM
Hi,
I've seen other discussions and confirm the compatibility between pvst+ and rapid-pvst + .
But I would like to leave a question, I have two Core Switches that support the two modes, but there are some nortel which are only compatible with pvst + and the new nexus only have rapid-pvst +, It is best to change the core for rapid-pvst +, or maintaining pvst +?
best regards,
Fred
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12-01-2012 02:40 AM
Rapid-STP is compatible with CST. I have seen older non-cisco switches not play nice with Cisco Rapid-PVST. So I had to set the Cisco switches to PVST. Keep in mind that the diameter of the network cannot be more than 7 with the default of timers of PVST. Reconvergence time is also reduced if you enable PVST, unless you enable things like uplinkfast or backbone fast.
12-01-2012 08:54 AM
Hi
Even though the Nexus series support both RSTP and MST I recommend changing the core to match the Nexus.
HTH
Sent from Cisco Technical Support iPhone App
12-01-2012 02:40 AM
Rapid-STP is compatible with CST. I have seen older non-cisco switches not play nice with Cisco Rapid-PVST. So I had to set the Cisco switches to PVST. Keep in mind that the diameter of the network cannot be more than 7 with the default of timers of PVST. Reconvergence time is also reduced if you enable PVST, unless you enable things like uplinkfast or backbone fast.
12-01-2012 08:54 AM
Hi
Even though the Nexus series support both RSTP and MST I recommend changing the core to match the Nexus.
HTH
Sent from Cisco Technical Support iPhone App
12-07-2012 04:10 AM
Hi John and Reza.
thanks for the responses
I'm goging to change the core
best regards
Fred
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