Blade Switch Cisco 3020 for HP Blade Enclosures

Unanswered Question
Feb 6th, 2008

Not sure where to post this question. Is there a BEST PRACTICES DOCUMENT on how to connect / configure Cisco 3020 Blade Switches to the CORE network and to the servers.

If 3020 in Left slot is connected via 3020 in right slot and Core switch A and Core Switch B are trunked in between them will there be a problem with this config or will spanning tree block one port either on Core switch A or B or left 3020 or right 3020?

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4.3 (3 ratings)
Jon Marshall Wed, 02/06/2008 - 23:25

Spanning-tree will block one of the connections as these are Cisco switches and support PVST+.

What we do is turn off the connection between the left and right 3020 switches in the chassis and then connect each 3020 switch to both 6500 switches, the classic triangle shape.

As long as you set STP priority for vlans on the core switches you should be fine.


astanislaus Thu, 02/07/2008 - 14:14


Thanks for your immediate reply. Also is there any URL / Link to Best practices for configuring 3020 and also for configuring the way the management interface (I think it is called OAM module) is connected to the 3020?

i.e. Should we use the backplane management connection or connect the 3020 front port to the OAM.

astanislaus Sun, 02/10/2008 - 15:27


According to the link you pointed, the file I downloaded is for CGESM. Is that the same for 3020 Cisco Switching Module?

Thanks You


Jon Marshall Sun, 02/10/2008 - 23:47


To all intents and purposes yes the principles of deployment are the same.



This Discussion