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About native vlan

dellpe
Occasional Contributor

About native vlan

I am attempting to move the "Native" (Cisco Term), Untagged (HP Term) from VLAN 1 to VLAN 700.

 

I have a Trunk "TRK1" on the HP s5500 aggregating 8 Gig Interfaces together connectng to an EtherChannel on the cisco  WS-C3750X-48T-S which is also aggregating 8 Gig Interfaces together.  Everything was working fine when I first stood everything up using VLAN 1 as the Untagged / NATIVE Vlan.  (Yes, I know, why did you change it - another story).

 

I thought it would be very easy to change the NATIVE / Untagged VLAN but I am running into issues.

 

On the Cisco switch, I am receiving no events; but the Huawei , I am constantly receiving events.

 

Here is what I have configured on the Cisco Side....

 

!

interface Port-channel5

description CO22ZNBCRK1SW1

switcHuaweiort

switcHuaweiort trunk encapsulation dot1q

switcHuaweiort trunk allowed vlan 1,5,300,500

switcHuaweiort mode trunk

switcHuaweiort nonegotiate

!

CO22DCWCRK1SW1#sho int port-channel 5 trunk

Port                Mode         Encapsulation  Status        Native vlan

Po5                 on           802.1q         trunking      1

Port                Vlans allowed on trunk

Po5                 1,5,300,500

Port                Vlans allowed and active in management domain

Po5                 1,5,300,500

Port                Vlans in spanning tree forwarding state and not pruned

Po5                 1,5,300,500

 

Per this output, I am using VLAN 1; however, the Huawei thinks differently.

 

Here are the events I am recieving on the HP Switch...

 

I 05/21/13 18:19:40 00828 lldp: PVID mismatch on port F20(VID 1)with peer device port Gi4/8(VID 700)(363)

I 05/21/13 18:19:44 00828 lldp: PVID mismatch on port F18(VID 1)with peer device port Gi4/7(VID 700)(363)

I 05/21/13 18:19:44 00828 lldp: PVID mismatch on port F16(VID 1)with peer device port Gi4/6(VID 700)(363)

I 05/21/13 18:19:44 00828 lldp: PVID mismatch on port F10(VID 1)with peer device port Gi4/3(VID 700)(363)

I 05/21/13 18:19:45 00828 lldp: PVID mismatch on port F12(VID 1)with peer device port Gi4/4(VID 700)(363)

I 05/21/13 18:19:52 00828 lldp: PVID mismatch on port F6(VID 1)with peer device port Gi4/1(VID 700)(362)

I 05/21/13 18:19:57 00828 lldp: PVID mismatch on port F14(VID 1)with peer device port Gi4/5(VID 700)(362)

I 05/21/13 18:19:58 00828 lldp: PVID mismatch on port F8(VID 1)with peer device port Gi4/2(VID 700)(362)

 

Here is configuration snippets from the HP

 

trunk F6,F8,F10,F12,F14,F16,F18,F20 trk1 trunk

 

VLAN ID : 1

  Name : DEFAULT_VLAN

  Status : Port-based

  Voice : No

  Jumbo : No

  Port Information Mode     Unknown VLAN Status

  ---------------- -------- ------------ ----------

  Trk1             Untagged Learn        Up

 

I tried calling HP Technical Support and was told I must use VLAN 1 as the Untagged VLAN.  I don't believe this is true because I am using VLAN 700 between an H3C and the same CISCO and have no issues.  The only difference is there are no aggregating ports.

 

I am thinking I either need to reboot the HP Switch or make the changes on the h3c end (Far Side) moving to VLAN 700 as the Untagged VLAN, shutting down the port channel on the Cisco Side, make the change on the Cisco side and bring up the port channel.

 

Does anyone have other suggestions?

 

Thanks in advance...

 

 

P.S. This thread has been moved from Switches, Hubs, Modems (Legacy ITRC forum)  to Comware-Based. -HP Forum Moderator

1 REPLY
Ian Vaughan
Honored Contributor

Re: About native vlan

Howdy,
Cisco Side - switchport trunk native vlan 700
HP Side - port trunk pvid vlan 700

Something like that
HTH
Ian
Hope that helps - please click "Thumbs up" for Kudos if it does
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