Figure 165 Modifying Static Vlan Example - ZyXEL Communications GS-3012 Series User Manual

Chapter 34 IEEE 802.1Q Tagged VLAN Commands
Syntax:
vlan <vlan-id>
fixed <port-list>
forbidden <port-list>
name <name-str>
normal <port-list>
untagged <port-list>
no fixed <port-list>
no forbidden <port-list>
no untagged <port-list>
where
• Enter
• Enter
<vlan-id>
• Enter
<vlan-id>
• Enter
• Enter
• Enter
34.5.4.1 Modify a Static VLAN Table Example
The following example configures ports 1 to 5 as fixed and untagged ports in VLAN 2000.

Figure 165 Modifying Static VLAN Example

sysname(config)# vlan 2000
sysname(config-vlan)# fixed 1-5
sysname(config-vlan)# untagged 1-5
34.5.4.2 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).
4 Then the switch applies the port filter to finish the forwarding decision. This means that
frames may be dropped even if the SVLAN says to forward them. Frames might also be
dropped if they are sent to a CPE (customer premises equipment) DSL device that does
not accept tagged frames.
262
The VLAN ID [1 – 4094].
<vlan-id> =
A name to identify the SVLAN entry.
<name-str> =
This is the switch port list.
<port-list> =
to register the
fixed <port-list>
to confirm registration of the
normal
.
to block a
forbidden <port-list>
.
or
no fixed no forbidden
to send outgoing frames without a tag.
untagged
to tag outgoing frames.
no untagged
to the static VLAN table with
to the static VLAN table with
<port-list>
from joining the static VLAN table with
to change
<port-list>
GS-3012/GS-3012F User's Guide
.
<vlan-id>
to normal status.