[Cisco 2960L-SM - Trunk Port Issues]

[net buzz]

Hi!

I have configured a WS-C2960L-SM-48TS switch with multiple VLANs which are working fine.

Another switch which serves VLANs 10,40,50 has been connected to the 2960L switch on interface Gi0/46.

Interface Gi0/46 has been set as Trunk and VLANs 10,40,50 allowed with native VLAN set as 10.

When testing, only VLAN 10 traffic is working.

Traffic for VLANs 40 and 50 are not going through

Refer to below config and attachment.

!
interface GigabitEthernet0/46
switchport trunk allowed vlan 10,40,50
switchport mode trunk
spanning-tree portfast edge
ip dhcp snooping trust
!

[Georg Pauwen]

Hello,

--> Interface Gi0/46 has been set as Trunk and VLANs 10,40,50 allowed with native VLAN set as 10.

I don't see Vlan 10 as being set as the native Vlan on your trunk. If you need that, the config should be:

interface GigabitEthernet0/46
switchport trunk allowed vlan 10,40,50
switchport mode trunk

switchport trunk native vlan 10
spanning-tree portfast edge
ip dhcp snooping trust

That said, what is the configuration of the switchport on the other switch ?

[net buzz]

Hi!

The other switch is a Netgear.

I have configured the uplink port 24 as follows:

VLAN 10 - Tagged

VLAN 40 - Tagged

VLAN 50 - Tagged

Please advise whether the above configuration is ok for the uplink from Netgear to Cisco switch

[Oleg Volkov]

Hello, please show “show vlan”, and “show int trunk” from both switches.

[jcockburn]

Hi Oleg,

Can you perhaps send both the switches' interface configs...

We cannot troubleshoot with only half the info...

Ciao

JC

[Abdallah Hagedriss]

You can configure the other interface same as the interface you configured 

Or

Configure the interface to allow all vlans

( Switchport allowed vlan all )