Avoid Looping Issue

Unanswered Question
Oct 13th, 2009
User Badges:

Hi,


Edge Switches are connected to BackBone-SW as trunk. Interfaces on EDGE switches are with portfast.


How to avoid looping concerns and disable interface if user connects hub,switch,router to ports on Edge-SW.


Backbone switch Cisco 4506

Edge switch cisco 2960




  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
Jason Fraioli Tue, 10/13/2009 - 09:43
User Badges:

This may be what you are looking for on your portfast interfaces.


spanning-tree portfast bpduguard default



edit: BPDUGuard will shut down the interface, and you can use the following commands the auto-recover the interface.


errdisable recovery cause bpduguard

errdisable recovery interval 180

nasr.khan Tue, 10/13/2009 - 10:47
User Badges:

Thanks.


Do I need to configure any commands on Backbone-SW.


What is ideal "MSTP Akka PVST" in my scenario.


One BackBone-Sw with 12 Edge-SW connected via SFP as trunk ports.

We have 45 Vlans including Voice/Data Vlans.


where does VTP Pruning fits??

Where does BpduFilter fits??



Actions

This Discussion