ZyXEL MI-7248 User Guide - Page 85
Port VLAN Trunking
View all ZyXEL MI-7248 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 85 highlights
Chapter 13 VLAN Please refer to the following table for common IEEE 802.1Q VLAN terminology. Table 15 IEEE 802.1Q VLAN Terminology VLAN PARAMETER TERM DESCRIPTION VLAN Type Permanent VLAN This is a static VLAN created manually. Dynamic VLAN This is a VLAN configured by a GVRP registration/ deregistration process. VLAN Administrative Registration Fixed Fixed registration ports are permanent VLAN members. Control Registration Forbidden Ports with registration forbidden are forbidden to join the specified VLAN. Normal Registration Ports dynamically join a VLAN using GVRP. VLAN Tag Control Tagged Ports belonging to the specified VLAN tag all outgoing frames transmitted. Untagged Ports belonging to the specified VLAN don't tag all outgoing frames transmitted. VLAN Port Port VID This is the VLAN ID assigned to untagged frames that this port received. Acceptable Frame Type You may choose to accept both tagged and untagged incoming frames, just tagged incoming frames or just untagged incoming frames on a port. Ingress filtering If set, the switch discards incoming frames for VLANs that do not have this port as a member 13.4 Port VLAN Trunking Enable VLAN Trunking on a port to allow frames belonging to unknown VLAN groups to pass through that port. This is useful if you want to set up VLAN groups on end devices without having to configure the same VLAN groups on intermediary devices. Refer to the following figure. Suppose you want to create VLAN groups 1 and 2 (V1 and V2) on devices A and B. Without VLAN Trunking, you must configure VLAN groups 1 and 2 on all intermediary switches C, D and E; otherwise they will drop frames with unknown VLAN group tags. However, with VLAN Trunking enabled on a port(s) in each intermediary switch you only need to create VLAN groups in the end devices (A and B). C, D and E automatically allow frames with VLAN group tags 1 and 2 (VLAN groups that are unknown to those switches) to pass through their VLAN trunking port(s). Figure 25 Port VLAN Trunking MS-7206 User's Guide 85