How to Ping Over Trunk Port in Juniper – Step-by-Step Guide

Okay, a bunch of answers. Here we go:

For the VoIP VLAN - will the PCs be sharing the switch ports on the back of the phone? If so, you'll need to set the switch ports as tagged trunk ports, and configure the phone for the VLAN. Otherwise, you can do as you stated. The phones will connect to the switch on untagged access ports. The ports between switches and to the SonicWALL will be tagged trunk ports.

For the SonicWALL, you'll create a separate zone for each VLAN. Configure the VLAN interfaces with the proper VLAN ID, and it should work (as long as the SonicWALL is plugged into a tagged trunk port.

Give it a shot and let us know if you run into any problems.

@RoyT. On your links between L3-1 and L3-2, how come you don't use a normal trunked etherchannel? Does the 172.16.0.1 255.255.255.252 have any purpose?

For instance, if you put this configuration on the interlink between L3-1 and L3-2:

interface Port-channel1
 switchport
 switchport trunk encapsulation dot1q
 switchport mode trunk
!
interface GigabitEthernet2/0/19
 switchport
 switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-group 1 mode desirable
!
interface GigabitEthernet2/0/20
 switchport
 switchport trunk encapsulation dot1q
 switchport mode trunk
 channel-group 1 mode desirable
!

Then everything will be able to communicate.

In order to do it:

(config)# int range gi2/0/19-20
(config-if)# no channel-group
(config-if)# switchport
(config-if)# switchport trunk encapsulation dot1q
(config-if)# switchport mode trunk
(config-if)# int po1
(config-if)# no ip address
(config-if)# switchport
(config-if)# switchport trunk encapsulation dot1q
(config-if)# switchport mode trunk
(config-if)# int range gi2/0/19-20
(config-if)# channel-group 1 mode desirable
(config-if)# end
# write memory