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Can't get vlan tagging to work between two different switch series

akadimi
Occasional Visitor

Can't get vlan tagging to work between two different switch series

Hello all,

I have a L3 switch (HP A5120-24G SI) connected to a L2 switch (HP J9776A 2530-24G) and I am trying to make the inter-switch link working as tagged carrying two vlans, 1 and 100.

This is what I have in L3 switch:

interface GigabitEthernet1/0/21
 description 4th
 port link-type trunk
 port trunk permit vlan 1 100
 undo voice vlan mode auto
 voice vlan qos trust
 storm-constrain broadcast pps 372025 1
 storm-constrain multicast pps 372025 1
 undo storm-constrain enable trap
vlan 1
   name "DEFAULT_VLAN"
   untagged 1-22,25-28
   tagged 23-24
   ip address 192.168.4.141 255.255.255.0
   exit
vlan 100
   name "voice"
   tagged 23-24
   no ip address
   exit

I thought this will be enough to get the traffic flow between the switches however I cannot get any trafic to flow from end to end through the tagged link (it was working perfectly while the ports was configured as access) 

 

2 REPLIES
HP-Browniee
Respected Contributor

Re: Can't get vlan tagging to work between two different switch series

Hi

The problem is that on the provision switch you tagged vlan 1 and on the comware vlan 1 is untagged.

So there are 2 options:

1. if you want vlan 1 tagged on both switches you have to change the pvid on the comware interface to an unused vlan. For example:

port trunk pvid vlan 999

By default comware switches untag vlan 1. on trunk interfaces.

2.  If u want vlan 1 to be untagged on both sides, you just have to untag vlan 1 on the procurve interface.

Hope this helps

Kind regards

 

akadimi
Occasional Visitor

Re: Can't get vlan tagging to work between two different switch series

Hi,

I managed to get it work by not using vlan 1 anymore. I moved the ports that were on vlan 1 to a new non-default vlan 80, and I tagged this new vlan on both sides.

Thank you for your help