PA-3410 Spanning tree cannot be generated

[JoHyeonJae]

Hello all,

We have a PA-3050 configured with V-wire and are operating as STP Block on the uplink of Backbone_B.
 
We are going to replace PA-3050 with new construction equipment, PA-3410.
 
STP blocks are not generated in the in-house LAB before deployment, and disconnect occurs during communication.

 
In conclusion, the issue has been resolved.



1. Set the section between ISP <-> PA-3410 <-> BB, change from Access port to Trunk port  

2. STP Block works normally after changing the tag-allowed setting of Virtual-Wire.

But I want to know why STP Block is not created when setting the access port when setting the PA-3410 equipment's Virtual Wire.

Is anyone aware of this problem?

Thanks,

[PavelK · Accepted solution]

Hello @JoHyeonJae

thank you for post.

Without looking into logs/debugs of adjacent switches, it is hard to answer it based on given information, however based on what you described, you might have been hitting an issue described in this KB: https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000Cm0sCAC

Kind Regards

Pavel