ZyXEL Communications ES-2024A, Руководство пользователя

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ES-2024A User’s Guide
Chapter 29 IEEE 802.1Q Tagged VLAN Commands 189
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
fixed
to register the
<port-list>
to the static VLAN table with
<vlan-id>
.
• Enter
normal
to confirm registration of the
<port-list>
to the static VLAN table with
<vlan-id>
.
• Enter
forbidden
to block a
<port-list>
from joining the static VLAN table with
<vlan-id>
.
• Enter
no fixed
or
no forbidden
to change
<port-list>
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 136 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).
<vlan-id> =
The VLAN ID [1 – 4094].
<name-str> =
A name to identify the SVLAN entry.
<port-list> =
This is the switch port list.
ras (config)# vlan 2000
ras (config-vlan)# fixed 1-5
ras (config-vlan)# untagged 1-5