ZyXEL Communications ES-2108 - Manual (Page 193)

ES-2108 Series User’s Guide
Chapter 29 IEEE 802.1Q Tagged VLAN Commands 193
Syntax:
vlan
fixed
forbidden
name
normal
untagged
no fixed
no forbidden
no untagged
where
• Enter fixed to register the to the static VLAN table with .
• Enter normal to confirm registration of the to the static VLAN table with
.
• Enter forbidden to block a from joining the static VLAN table with
.
• Enter no fixed or no forbidden to change to normal status.
• Enter untagged to send outgoing frames without a tag.
• Enter no untagged to tag outgoing frames.
29.5.4.1 Modify a Static VLAN Table Example
The following example configures ports 1 to 5 as fixed and untagged ports in VLAN 2000.
Figure 138 Modifying Static VLAN Example
29.5.4.2 Forwarding Process Example
Tagged Frames
1 First the switch checks the VLAN ID (VID) of tagged frames or assigns temporary VIDs
to untagged frames.
2 The switch then checks the VID in a frame’s tag against the SVLAN table.
3 The switch notes what the SVLAN table says (that is, the SVLAN tells the switch
whether or not to forward a frame and if the forwarded frames should have tags).
= The VLAN ID [1 – 4094].
= A name to identify the SVLAN entry.
= This is the switch port list.
ras (config)# vlan 2000
ras (config-vlan)# fixed 1-5
ras (config-vlan)# untagged 1-5