ZyXEL Communications XGS-4528F - VLAN Stacking Port Roles; Figure 79 VLAN Stacking Example

Chapter 21 VLAN Stacking
XGS-4528F User’s Guide
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Figure 79 VLAN Stacking Example
21.2 VLAN Stacking Port Roles
Each port can have three VLAN stacking “roles”, Normal, Access Port and Tunnel (the latter
is for Gigabit ports only).
• Select Normal for “regular” (non-VLAN stacking) IEEE 802.1Q frame switching.
• 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.
• Select Tunnel Port (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 the Service
Provider’s (SP) VLAN ID (VID)).
" Static VLAN Tx Tagging MUST be enabled on a port where you choose
Tunnel Port.