Routing Bridge placement (RBridge) help!!

Unanswered Question
Jun 15th, 2010
User Badges:

Hi,


My new boss has given me a question and to be honest I don't know the answer.  We have 2 Cisco core switches and 2 edge/distribution switches(see diagram) and he has asked be where I think I would put a routing bridge??  I havent heard of one before but it looks like it could replace the STP as it doesn't block ports so you use all the redundant links.


Can someone out there make a suggestions?

Attachment: 
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
Giuseppe Larosa Tue, 06/15/2010 - 04:34
User Badges:
  • Super Silver, 17500 points or more
  • Hall of Fame,

    Founding Member

Hello Andy,


the root bridge is an STP concept not an alternative to it


the answer depends on what type of link is between core switches and distribution switches if they are routed links to a L3 core the STP boundary is on the distribution switches and it is reasonable to have the two distribution switches to act as root bridge and secondary root bridge


Usually for load balancing for half of Vlans distrib1 is root bridge and distrib2 is backup and viceversa for the other vlans


In PVST mode one STP instance exists for each Vlan


Hope to help

Giuseppe

Ganesh Hariharan Tue, 06/15/2010 - 08:28
User Badges:
  • Purple, 4500 points or more
  • Community Spotlight Award,

    Member's Choice, February 2016

Hi,


My new boss has given me a question and to be honest I don't know the answer.  We have 2 Cisco core switches and 2 edge/distribution switches(see diagram) and he has asked be where I think I would put a routing bridge??  I havent heard of one before but it looks like it could replace the STP as it doesn't block ports so you use all the redundant links.


Can someone out there make a suggestions?

           
        Attachments:        
  •                 Attachment                 trill-11.jpg                 (23.6 K)                
       

Hi,


A Routing Bridge or RBridge is a network device that implements the TRILL protocol, as defined by the IETF.RBridges are compatible with previous IEEE 802.1 customer bridges as well as IPv4 and IPv6 routers and end nodes. They are invisible to current IP routers and, like routers, RBridges terminate the bridge spanning tree protocol.


http://en.wikipedia.org/wiki/Routing_Bridge


Hope to Help !!


Ganesh.H

Actions

This Discussion