tagged packets on untagged port

  • 0
  • 1
  • Question
  • Updated 5 years ago
  • Answered
Create Date: Oct 29 2013 11:39AM

Hi,

I have created a vlan which servers as master vlan for ESRP, let's call it esrpmaster. I have added ports to this vlan tagged that work fine and one untagged port, and assigned an ip address to the vlan.

I am unable to ping upstream extreme switch connected to the untagged port. Mirroring the port and running wireshark releveals that while the other side sends me untagged packets, I send them tagged packets, even though I have added the port to erpmaster vlan as untagged.

I am confused why this is happening. Anyone got a clue? All switches involved are x670v, and I am running 15.3.1.4

Best regards,


Dimitris

(from dzila)
Photo of EtherNation User

EtherNation User, Employee

  • 20,350 Points 20k badge 2x thumb

Posted 5 years ago

  • 0
  • 1
Photo of EtherNation User

EtherNation User, Employee

  • 20,350 Points 20k badge 2x thumb
Create Date: Oct 29 2013 2:05PM

Do you mean by master vlan, control vlan? If yes, all ports added to this vlan must be tagged. One of the ESRP (or EAPS) rules.

(from LNU)
Photo of EtherNation User

EtherNation User, Employee

  • 20,350 Points 20k badge 2x thumb
Create Date: Oct 29 2013 4:42PM

Thank you for your reply,

No, I mean master vlan, control vlan is for EAPS which I do not use...

(from dzila)
Photo of EtherNation User

EtherNation User, Employee

  • 20,350 Points 20k badge 2x thumb
Create Date: Oct 29 2013 5:00PM

Found my answer in the documentation:

'Egress mirrored traffic always egresses the monitor port tagged'

So that was a red herring. I have no idea why the switches cannot ping each other now.
(from dzila)

This conversation is no longer open for comments or replies.