10-19-2017 06:00 AM - edited 03-08-2019 12:25 PM
I have two 3560's connected via a Cisco AirBridge.
For some reason, VLANs on the remote 3560-8 won't work properly.
The port in Corp looks like this:
interface FastEthernet0/1
description Bridge to Durham
switchport trunk encapsulation dot1q
switchport trunk native vlan 12
switchport mode trunk
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
mls qos trust cos
auto qos voip trust
The port in remote looks like this:
interface FastEthernet0/1
description uplink to 1310 bridge
switchport trunk encapsulation dot1q
switchport trunk native vlan 12
switchport mode trunk
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
mls qos trust cos
auto qos voip trust
spanning-tree portfast
I did notice the remote bridge has "vtp mode transparent".
What happens is I configure the ports for switchport voice vlan 7, and the phones don't come up on the new system. If I use voice vlan 6, they attempt to come up on the old system, so I know we are reaching corporate. Also data on vlan 12 works perfectly.
Not sure this is enough to get started with, but that "native vlan" line stumps me and makes me wonder if it's necessary. My experience has always been that if a port is in trunk mode, you will get all the vlans...
Solved! Go to Solution.
10-19-2017 06:27 AM - edited 10-19-2017 06:32 AM
Hi
vlans are wrong , vlan 12 has 2 different names Data and data
and then you have 2 different voice vlans 5 and 6 which is it ? these should be identical both sides of the trunk
vlan 6 is called 2 different names too
vlan names are case sensitive at layer 2 between switches in the broadcast domain , so they must be the same at layer 2 or you will have issues
10-19-2017 06:12 AM
By default the native vlan is 1. So, it has been changed to vlan 12 across all switches which is fine. Also, you are getting all vlans across the trunk port since you have "switchport mode trunk" enabled on both switches. Overall the config looks fine. Where is the gateway for all vlans?
HTH
10-19-2017 06:12 AM
Hi
do the vlans name match at layer 2 , if its transparent means they had to be manually added and if it was done wrong or is not case sensitive it wont work , can you post the show vlan and sh int trunk from working and non working switch
natvie vlan shouldn't make a diff its juts for tagging that vlan
remove spanning-tree portfast from the trunk , should not be on a trunk at all unless its specific with trunk added and connected to like router
10-19-2017 06:20 AM
Sho vlan (remote):
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi0/1
6 voice active Fa0/2, Fa0/4
7 VLAN0007 active Fa0/3, Fa0/5, Fa0/6, Fa0/7
12 data active Fa0/2, Fa0/4, Fa0/6, Fa0/7
sho vlan (corp)
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active
5 Voice active
6 Voiceservers active Fa0/24
7 VLAN0007 active Fa0/2, Fa0/3, Fa0/4, Fa0/5, Fa0/6, Fa0/7, Fa0/8, Fa0/9
Fa0/10, Fa0/11, Fa0/12, Fa0/13, Fa0/14, Fa0/15, Fa0/16
12 Data active
sho int trunk (remote)
Port Mode Encapsulation Status Native vlan
Fa0/1 on 802.1q trunking 12
Fa0/8 on 802.1q trunking 12
Port Vlans allowed on trunk
Fa0/1 1-4094
Fa0/8 1-4094
Port Vlans allowed and active in management domain
Fa0/1 1,6-7,12,254
Fa0/8 1,6-7,12,254
Port Vlans in spanning tree forwarding state and not pruned
Fa0/1 1,6-7,12,254
Fa0/8 1,6-7,12,254
sho int trunk (corp)
Port Mode Encapsulation Status Native vlan
Fa0/1 on 802.1q trunking 12
Gi0/1 on 802.1q trunking 1
Gi0/2 on 802.1q trunking 1
Port Vlans allowed on trunk
Fa0/1 1-4094
Gi0/1 1-4094
Gi0/2 1-4094
Port Vlans allowed and active in management domain
Fa0/1 1,5-12,250,254,300
Gi0/1 1,5-12,250,254,300
Gi0/2 1,5-12,250,254,300
Port Vlans in spanning tree forwarding state and not pruned
Fa0/1 1,5-12,250,254,300
Gi0/1 1,5-12,250,254,300
Gi0/2 1,5-12,250,254,300
10-19-2017 06:27 AM - edited 10-19-2017 06:32 AM
Hi
vlans are wrong , vlan 12 has 2 different names Data and data
and then you have 2 different voice vlans 5 and 6 which is it ? these should be identical both sides of the trunk
vlan 6 is called 2 different names too
vlan names are case sensitive at layer 2 between switches in the broadcast domain , so they must be the same at layer 2 or you will have issues
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