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12-15-2015 12:27 PM
12-15-2015 12:27 PM
HP Procurve 2920 and Cisco 2960 Spanning-tree issue
I am working with a pair of stacked HP Procurve 2920-48G and I am attempting to connect a Cisco 2960G switch to port 1/28 on the HP side from port 0/32 on the cisco side.
When I connect the switches, the ports link up and according to the logs
Cisco 2920
002261: Dec 14 13:57:11.802: %LINK-3-UPDOWN: Interface GigabitEthernet0/32, chan
ged state to down
002262: Dec 14 13:57:18.136: %LINK-3-UPDOWN: Interface GigabitEthernet0/32, chan
ged state to up
HP 2920
I 12/15/15 13:52:27 00435 ports: ST1-CMDR: port 1/28 is Blocked by STP
I 12/15/15 13:52:36 00077 ports: ST1-CMDR: port 1/28 is now off-line
I 12/15/15 13:52:47 00435 ports: ST1-CMDR: port 1/28 is Blocked by STP
I 12/15/15 13:53:21 00076 ports: ST1-CMDR: port 1/28 is now on-line
I 12/15/15 13:54:07 00077 ports: ST1-CMDR: port 1/28 is now off-line
I 12/15/15 13:54:32 00435 ports: ST1-CMDR: port 1/28 is Blocked by STP
I 12/15/15 13:55:06 00076 ports: ST1-CMDR: port 1/28 is now on-line
I 12/15/15 13:56:26 00077 ports: ST1-CMDR: port 1/28 is now off-line
I noticed that the Cisco port is configured is configured as shown below and the HP is configured with Spanning-tree on all ports.
interface GigabitEthernet0/32
spanning-tree portfast disable
When I connect the two switches I am unable to pring from the cisco to the hp and vice-versa.
Any idea?
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12-16-2015 05:03 AM
12-16-2015 05:03 AM
Re: HP Procurve 2920 and Cisco 2960 Spanning-tree issue
Hard to answer without configs.Make sure admin-edge bpdu guard port security is disabledon those ports