ZyXEL Communications AAM1212-51, Руководство пользователя

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AAM1212-51/53 Series User’s Guide
298 Chapter 45 IEEE 802.1Q Tagged VLAN Commands
This command adds or modifies an entry in the static VLAN table. Use the
switch vlan
show
command to display your configuration. An example of a configuration is shown next.
45.4.4.1 Modify a Static VLAN Table Example
The following is an example of how to modify a static VLAN table.
45.4.4.2 Forwarding Process Example
Tagged Frames
1 First the AAM1212 checks the VLAN ID (VID) of tagged frames or assigns temporary
VIDs to untagged frames (see
Section 45.4.2 on page 296 ).
2 The AAM1212 checks the frame’s source MAC address against the MAC filter.
3 The AAM1212 then checks the VID in a frame’s tag against the SVLAN table.
4 The AAM1212 notes what the SVLAN table says (that is, the SVLAN tells the
AAM1212 whether or not to forward a frame and if the forwarded frames should have a
tag).
5 Frames might be dropped if they are sent to a CPE (customer premises equipment) DSL
device that does not accept tagged frames.
Untagged Frames
<F<T|U>| =
The <F> stands for a fixed registrar administration control flag
and registers a <port #> to the static VLAN table with <vid>.
For a fixed port, you also have to specify <T|U>, the tag control
flag.
<T> has the device add an IEEE 802.1Q tag to frames going out
through this port(s).
<U> has the device send frames out through this port(s) without
an IEEE 802.1Q tag.
|X|N> =
This is the registrar administration control flag.
<X> stands for forbidden and blocks a <port #> from joining the
static VLAN table with <vid>.
<N> stands for normal and confirms registration of the <port #>
to the static VLAN table with <vid>. This is used in GVRP
applications.
[name] =
A name to identify the SVLAN entry.
Figure 155 Modifying the Static VLAN Example
ras> switch vlan set 2000 1:FU
ras> switch vlan set 2001 2:FU