Solved: VRRP with STP

ruchik999 · ‎03-02-2015

Hi Experts,

I have two swicthes sw1 and sw2 and both of them futher connected with routers R1 and R2.on Routers VRRP is running.I have made the sw2 as a root bridge and R1 is master in my topology. Could any one sort out the traffic flow for me.

Sw1---R1

Sw2---R2

and both are interconnected as well.

Many thanks in advance..:)

Jon Marshall · ‎03-03-2015

If R1 is the VRRP master for all vlans then traffic will flow from Sw1 direct and traffic from Sw2 will go to Sw1 and then to R1.

That is for traffic between vlans.

If a client on Sw1 talks to a client on Sw2 in the same vlan traffic won't go to the routers it will go across the switch interconnect.

Finally if there is anything beyond the routers in terms of other L3 devices then return traffic could come back to either router depending on the routing.

Jon

View solution in original post

Jon Marshall · ‎03-03-2015

If R1 is the VRRP master for all vlans then traffic will flow from Sw1 direct and traffic from Sw2 will go to Sw1 and then to R1.

That is for traffic between vlans.

If a client on Sw1 talks to a client on Sw2 in the same vlan traffic won't go to the routers it will go across the switch interconnect.

Finally if there is anything beyond the routers in terms of other L3 devices then return traffic could come back to either router depending on the routing.

Jon

ruchik999 · ‎03-03-2015

That's make a sense to me..thanks a lot Jon for your response.