For a scenario with 50 vlans, each vlan residing on an individual switch, is it best to run MST or RSTP? We want to have the flexibility to add more than one vlan to a switch, but at the same time, 50 vlans would be 50 STP instances using RSTP correct? Is 50 vlan RSTP instances going to slam my core switchs processor? What is the maximum number of vlans you would run in RSTP, before migrating to MST?
I can't recommend a specific number of VLANs where migration to MST would be indicated. I can say that we run well more than 50 VLANs in our core in PVST+ mode. We use "switchport trunk allowed vlan" statements on the core-to-dist layer trunk uplinks. This keeps STP calculations reasonable by limiting the number of ports the core switch has to consider. CPU impact on our core switches by the STP process is negligible.
I don't think you'd have any problem running RSTP with 50 VLANs, assuming you use the "switchport trunk allowed vlan".
50 shouldn't be a problem , we have like 80 on a first gen Sup 2 6500 and its not a problem with cpu or anything else , we run just pvst+ not rapid but it still shouldn't matter , just manually prune off any vlans you don't actually need down the links to the individual switches.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.