08-25-2006 01:44 AM - edited 03-03-2019 04:41 AM
Hi All,
I have a 1200 access point configured with 3 vlans connected to a 3560G configured with about 17 vlans.. as soon as i enable the trunk on the port on the switch where the AP is connected i lose connectivity to the AP.. attached is the config of the switch and AP .
Hope some one can help.
Kind regards
Okechi
08-25-2006 03:02 AM
Assuming you have connected the Wireless Access Point to FastEtheret0/1 your trunking configuration seems to be the culprit.
interface FastEthernet0/1
description # MRCISDAP1 #
switchport access vlan 280
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,280,500,501
*switchport mode access*
switchport nonegotiate
The switchport is configured to be a static access port. Port Fa0/1 which is a member of vlan 280 receives tagged fromes from the Wireless Access Point, because it is not in trunking mode these frames are discarded.
#show interface FastEthernet0/1 switchport
Configure the port to be in truning mode.
(config-if)#switchport mode trunk
HTH
--Leon
* Please rate posts.
08-25-2006 05:33 AM
The issue is this , as soon as I enable trunk using(config-if)#switchport mode trunk I lose conectivity to th AP
08-25-2006 05:59 AM
You must have matching native vlan commands on each side of the trunk link , on the switch side it would be switchport trunk native vlan XXX , on the wap side it would be under the ethernet subinterface that matches the native vlan with the "encapsulation dot1q XXX native" command , don't see either in your config
08-25-2006 01:12 PM
Sorry that was the old config ... The four interfaces below are connected to the AP... with trunks enable on the interfaces .. i lose connectivity to the AP.
interface FastEthernet0/1
description # MRCISDAP1 #
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,280,500,501
switchport mode trunk
switchport nonegotiate
!
interface FastEthernet0/2
description # MRCISDAP2 #
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,280,500,501
switchport mode trunk
switchport nonegotiate
!
interface FastEthernet0/3
description # MRCISDAP3 #
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,280,500,501
switchport mode trunk
switchport nonegotiate
!
interface FastEthernet0/4
description # MRCISDAP4 #
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,280,500,501
switchport mode trunk
switchport nonegotiate
08-25-2006 01:33 PM
Sorry that was the old config ... The four interfaces below are connected to the AP... with trunks enable on the interfaces .. i lose connectivity to the AP.
interface FastEthernet0/1
description # MRCISDAP1 #
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,280,500,501
switchport mode trunk
switchport nonegotiate
!
interface FastEthernet0/2
description # MRCISDAP2 #
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,280,500,501
switchport mode trunk
switchport nonegotiate
!
interface FastEthernet0/3
description # MRCISDAP3 #
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,280,500,501
switchport mode trunk
switchport nonegotiate
!
interface FastEthernet0/4
description # MRCISDAP4 #
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,280,500,501
switchport mode trunk
switchport nonegotiate
08-25-2006 05:55 PM
You may need to configure "switchport trunk native vlan xxxx" command.
08-25-2006 06:05 PM
Thanks ssen010 it worked ... The native vlan is vlan 1 but the mgt vlan is 280.. when is made the trunk native vlan 280 it worked.. many thanks.
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