We help IT Professionals succeed at work.
Get Started

Spanning Tree on HP Switch

sumit2012 asked
Last Modified: 2012-05-31

we have a topology that we have two cisco core switches 6509 acting as a root bridge running PVST+ and configured in such a way that for add Vlan's one switch is acting as a root bridge and for even Vlan's the other 6509 is acting as a root bridge.

We have some network flip and there was an outage of around 30 min. When we investigated we found that for Vlan A and Vlan B while checking the spanning-tree it shows the designated root <MAC-ADDRESS> is getting learned from one of the HP Pro-curve switch.
This is the same case with both Vlan A & B

That designated MAC-ADDRESS is actually the MAC-ADDRESS of one of the uplink of HP Pro Curve switch.

Now this HP switch is connected in such a way that one uplink on the cisco access-layer switch is configured on Vlan A and one uplink was configured on Vlan B which is connecting to the other cisco access-layer switch.

Please suggest how can i make sure and what changes i will do that for Vlan A and Vlan B my both core 6509 will act as a root bridge which is the best and cisco best practice.

If that HP switch is acting as a root bridge for Vlan A and Vlan B does it also show that ' This switch as a root' like we can see on cisco switches.
Watch Question
Top Expert 2015
This problem has been solved!
Unlock 1 Answer and 24 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE