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09-28-2007 12:46 AM - last edited on 03-03-2014 05:58 PM by Maiko-I
09-28-2007 12:46 AM - last edited on 03-03-2014 05:58 PM by Maiko-I
Hi
In our environment we have 2 core switches 5412zl and 6 Edge Switches 2810-48G. The Core Switches are connected over a static LACP trunk with 5 Physical copper links. Each Edge switch is connected with fibre link to each core switch. I enabled spanning tree over the web menu on each switch (inlcuding core). The problem is, that we have some real performance problem in this environment. Sometime it's better sometimes worse. On the switchlog I have intermittent excessive broadcast or packet drop entries. I used a packetsniffer and the result was, that most the times the switches do not switch. Something must bring them into hub modus. So I wonder if everything is configured correctly? I'm confused with the the Spanning tree options available. Do I have to set the Fibre ports from the edge switches to a special edge modus?
best regards
Daniel
P.S. This thread has been moevd from Switches, Hubs, Modems (Legacy ITRC forum) to ProCurve / ProVision-Based. - Hp Forum Moderator
Solved! Go to Solution.
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09-28-2007 09:31 AM
09-28-2007 09:31 AM
Re: Procurve Environment MSTP Question
I think its better to have MSTP enabled by CLI.
You should configure 2 or more instances if need MSTP, then configure Core1 as ROOT for instace1 and Core2 as ROOT for instance 2.
Example:
Say you have 4 Vlans, and you need configure Core switches in MSTP environment
and you want instance1 to have vlan 1&2
and instance2 to have vlan 3&4
Then you have to configure both core as the following:
Core1:
spanning-tree priority 0
spanning-tree protocol-version MSTP
spanning-tree config-name "MSTP"
spanning-tree config-revision 2
spanning-tree instance 1 vlan 1 2
spanning-tree instance 1 priority 0
spanning-tree instance 2 vlan 3 4
spanning-tree instance 2 priority 1
span
Core2:
spanning-tree priority 1
spanning-tree protocol-version MSTP
spanning-tree config-name "MSTP"
spanning-tree config-revision 2
spanning-tree instance 1 vlan 1 2
spanning-tree instance 1 priority 1
spanning-tree instance 2 vlan 3 4
spanning-tree instance 2 priority 0
span
With this configuration you are load balancing on uplinks from each edge to both Cores on Vlan basis.
Good Luck !!!
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09-29-2007 03:22 AM
09-29-2007 03:22 AM
Re: Procurve Environment MSTP Question
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09-30-2007 01:39 AM
09-30-2007 01:39 AM
Re: Procurve Environment MSTP Question
http://www.hp.com/rnd/software/j86921225.htm
This supports auto-edge-port by default when you enable spanning-tree. Earlier versions had a bug where when a port would go offline it would generate a topology change. Even earlier versions you manually had to configure your edge-port status. K.12.25 will give you good results by simply enabling spanning-tree with no other configuration. (Although you should at least set the core 5412 as the spanning-tree root).
I wouldn't update to K.12.43 (wait for the next release).
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09-30-2007 03:11 AM
09-30-2007 03:11 AM
Re: Procurve Environment MSTP Question
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10-01-2007 04:09 PM
10-01-2007 04:09 PM
Re: Procurve Environment MSTP Question
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10-01-2007 07:14 PM
10-01-2007 07:14 PM
Re: Procurve Environment MSTP Question
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10-01-2007 10:08 PM
10-01-2007 10:08 PM
Re: Procurve Environment MSTP Question
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10-02-2007 02:39 PM
10-02-2007 02:39 PM
SolutionEdge-ports are those with PC's or Servers attached. Basically anything that is not another switch.
e.g. 'spanning-tree a1-a20 admin-edge-port'
K.12.25 onwards has a fix where you do not need to use this command to prevent TC's.
On the 2810's, you should do the same thing, but depending on what firmware version you're running you may only have the 'edge-port' command. If you are running N.11.02 or later there is no need to touch anything apart from just enabling spanning-tree.
On your 5412's, you need to select one as the spanning-tree root, and then use the 'spanning-tree priority <0-15>' command. I would select 1 for your root, and 2 for the other 5412.
Leave the 2810's at the default which is 8.
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10-02-2007 09:08 PM
10-02-2007 09:08 PM
Re: Procurve Environment MSTP Question
I wonder why there is almost nothing written in the manual about the root settings.
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10-03-2007 09:25 PM
10-03-2007 09:25 PM
Re: Procurve Environment MSTP Question
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10-03-2007 10:24 PM
10-03-2007 10:24 PM
Re: Procurve Environment MSTP Question
5400(config)# spanning-tree priority 1
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10-03-2007 11:16 PM
10-03-2007 11:16 PM
Re: Procurve Environment MSTP Question
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10-04-2007 12:13 AM
10-04-2007 12:13 AM