ZyXEL ES-3124PWR Guia Do Utilizador

ES-3124PWR Ethernet Switch 

21-2                                                                                                                                        VLAN Stacking 

 

21.2 VLAN Stacking Roles 

Each port can have three VLAN stacking “roles”, Normal, Access Port and Tunnel Port (the latter is for Gigabit 
ports only). 

Ø  Select Normal for “regular” (non-VLAN stacking) IEEE 802.1Q frame switching.  

Ø  Select Access Port for ingress ports on the service provider's edge devices (1 and 2 in the VLAN stacking 

example figure). The incoming frame is treated as "untagged", so a second VLAN tag (outer VLAN tag) can be 
added. 

Static VLAN Tx Tagging MUST be disabled on a port where you choose Normal or Access Port. 

Ø  Select Tunnel (available for Gigabit ports only) for egress ports at the edge of the service provider's network. 

All VLANs belonging to a customer can be aggregated into a single service provider's VLAN (using the outer 
VLAN tag defined by SP VID). 

Static VLAN Tx Tagging MUST be enabled on a port where you choose Tunnel Port. 

21.3 VLAN Tag Format 

A VLAN tag (service provider VLAN stacking or customer IEEE 802.1Q) consists of the following three fields.  

Type