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Cisco 3120X - blade mac-addresses in wrong VLAN

jamesl0112
Level 1
Level 1

Hi,

Summary of problem:

- Incoming frames on three of a blade's four switchports are being put into VLAN 1 even though the ports are either in other access VLANs, or are configured as trunks with different VLAN IDs being tagged by the server.

- When the ports go down the access VLAN is removed from the port.

Switch stack: 4x WS-CBS3120X-S, 12.2(58)SE1

HP blade: HP BL460c Gen8

This combination has been used successfully elsewhere.

Switchport configuration:

!

interface GigabitEthernet1/0/13 -------> THIS PORT IS OK

switchport mode trunk

switchport nonegotiate

spanning-tree portfast trunk

end

!

interface GigabitEthernet2/0/13 -------> NOT OK

switchport access vlan 100

switchport mode access

switchport nonegotiate

flowcontrol receive desired

spanning-tree portfast

spanning-tree bpduguard enable

end

!

interface GigabitEthernet3/0/13 -------> NOT OK

switchport mode trunk

switchport nonegotiate

spanning-tree portfast trunk

end

!

interface GigabitEthernet4/0/13 -------> NOT OK

switchport access vlan 100

switchport mode access

switchport nonegotiate

flowcontrol receive desired

spanning-tree portfast

spanning-tree bpduguard enable

end

mac-address table shows that these are being put into VLAN 1:

Vlan    Mac Address       Type        Ports

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

   1    1060.4b01.44d1    DYNAMIC     Gi3/0/13

   1    1060.4b01.44d5    DYNAMIC     Gi4/0/13

   1    1060.4bab.e66d    DYNAMIC     Gi2/0/13

- These mac-addresses are correct so we know they are coming from the correct NICs into the correct switchports.

- If the blade is powered off - the switchports go down. When this happens, the access VLAN is somehow removed from the switchports that are configured as access ports:

!

interface GigabitEthernet2/0/13

switchport mode access

switchport nonegotiate

flowcontrol receive desired

spanning-tree portfast

spanning-tree bpduguard enable

end

!

interface GigabitEthernet4/0/13

switchport mode access

switchport nonegotiate

flowcontrol receive desired

spanning-tree portfast

spanning-tree bpduguard enable

end

Suggestions welcome - thanks.

1 Reply 1

jamesl0112
Level 1
Level 1

A reload of the stack resolved this problem.

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