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Fmartin_116699's avatar
Fmartin_116699
Icon for Nimbostratus rankNimbostratus
Aug 21, 2013

Problem with VLAN on a trunk partition

Hello,

 

I have a problem that is taking days to resolve. I am stuck. How can I troubleshooting the VLAN configuration on the interface. The configuration looks fine, but I am pretty sure, the Bigip is not tagging this specific VLAN on the interface, as I don't see any MAC for this VLAN on the switch. While others work fine. The VLAN es the 423. I simplified the config. Others VLANs with different tag ID work fine.

 

net route-domain /CUSTOMER-DMZ/CUSTOMER-DMZ { id 16 vlans { /CUSTOMER-DMZ/CUSTOMER-DMZ-B-S_1 } } net self /CUSTOMER-DMZ/B-S-CUSTOMER-DMZ_I { address 172.17.197.103/27 traffic-group /Common/traffic-group-local-only vlan /CUSTOMER-DMZ/CUSTOMER-DMZ-B-S_1 } net self /CUSTOMER-DMZ/B-S-CUSTOMER-DMZ_1_Floating { address 172.17.197.104/27 traffic-group /Common/traffic-group-1 vlan /CUSTOMER-DMZ/CUSTOMER-DMZ-B-S_1 } net vlan /CUSTOMER-DMZ/CUSTOMER-DMZ-B-S_1 { description CUSTOMER-DMZ-B-S_1 interfaces { Backend_Trunk { tagged } } tag 423 }

 

Thanks, Regards,

 

APM
availability
security

5 Replies

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  • Hamish's avatar
    Hamish
    Icon for Cirrocumulus rankCirrocumulus
    Aug 21, 2013

    At first glance it looks OK.

     

    You can easily verify by performing a tcpdump on the trunk/interface and specifying the '-e' parameter (With appropriate filters in place so you don't get over whelmed with info).

     

    tcpdump will then show you the VLAN TAG being used on the packet.

     

    What makes you think it's not being tagged?

     

    H

     

  • Hamish's avatar
    Hamish
    Icon for Cirrocumulus rankCirrocumulus
    Aug 21, 2013

    Can you post the switch config for that port-channel? (Use backticks to format it as code though in the posting please)

     

    H

     

  • Fmartin_116699's avatar
    Fmartin_116699
    Icon for Nimbostratus rankNimbostratus
    Aug 21, 2013

    interface Port-channel3 description fonesixbap04_backend switchport switchport trunk allowed vlan 311-322,410-425,500-525,601-625,1034,1044,1045 switchport trunk allowed vlan add 1055,1065,1070-1076,1101,2044,2045,2055,2065 switchport trunk allowed vlan add 2070-2076 switchport mode trunk switchport nonegotiate end

     

  • Fmartin_116699's avatar
    Fmartin_116699
    Icon for Nimbostratus rankNimbostratus
    Aug 21, 2013

    Delete the full configuration. Route domain included. Load the same configuration. And it's working fine. I am pretty sure, the problem was the first time when I created the VLAN. the error of "untagged" just made something that , even when I rectified, and the config looked fine. It didn't tag anymore.