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Interface is blocking by stp

Muthukumar P
Level 1
Level 1

Hi team,

             We are having one Cisco 2960 switch one HPE 5900 switch and need to connect the uplink between. When ever connect the link between switches getting error message and it seems cisco switch port blocking stage but HPE switch interface is showing forward mode. the following error are getting. Kindly suggest on this..

Note: In cisco switch default vlan only configured and HPE switch side number of vlans are configured. We have tried 

both switch uplink port trunk as well as access port but same problem persisting

 

​​​​*Nov 14 00:10:45.706: %SPANTREE-7-BLOCK_PORT_TYPE: Blocking GigabitEthernet1/0/47 on VLAN0001. Inconsistent port type.

1 Accepted Solution

Accepted Solutions

HI team,

         The following configuration is ok for enable MST 

instance 1 vlan 10-20

name region1

revision 1

show pending

View solution in original post

7 Replies 7

marce1000
VIP
VIP

 

 - Check this article :

         https://community.cisco.com/t5/networking-documents/the-quot-spantree-7-block-port-type-blocking-chars-on-chars/ta-p/3132678

 M.



-- ' 'Good body every evening' ' this sentence was once spotted on a logo at the entrance of a Weight Watchers Club !

OK I will try and confirm by tomorrow

FYI..

Cisco switch side PVST is enabled

HPE switch side MSTP is running

Hello,

 

PVST is Cisco proprietary. Try and run MSTP on both the Cisco and the HPE.

Muthukumar P
Level 1
Level 1

Today only we are going to check and will confirm the status by soon

Hi Team,

HI team,

         The following configuration is ok for enable MST 

instance 1 vlan 10-20

name region1

revision 1

show pending

Hello
Make sure they are both running the same port mode,(trunk or access) and if a trunk native vlan is the same, we have cisco and HP running fine in our environments but you DO need to check the stp modes incase when pvst and mst domains connect.

Can you confirm what switch is the stp root, I assume its the HP as that's running multiple vlans- if so change the stp bridge id of the cisco switch to a  higher / stp lesser value than the HP switch ( no need to change stp mode on the cisco either) 

cisco switch

spanning-tree vlan 1-4094 priority 61440


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Kind Regards
Paul
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