ZyXEL Communications ES-2024A, User Manual

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ES-2024A User’s Guide
190 Chapter 29 IEEE 802.1Q Tagged VLAN Commands
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.
Untagged Frames
1 An untagged frame comes in from the LAN.
2 The switch checks the PVID table and assigns a temporary VID of 1.
3 The switch ignores the port from which the frame came, because the switch does not send
a frame to the port from which it came. The switch also does not forward frames to
“forbidden” ports.
4 If after looking at the SVLAN, the switch does not have any ports to which it will send
the frame, it won’t check the port filter.
29.5.5 Delete VLAN ID
Syntax:
no vlan <vlan-id>
where
This command deletes the specified VLAN ID entry from the static VLAN table. The
following example deletes entry 2 in the static VLAN table.
Figure 137 no vlan Command Example
29.6 Enable VLAN
Syntax:
vlan <vlan-id>
This command enables the specified VLAN ID in the SVLAN (Static VLAN) table.
<vlan-id> =
The VLAN ID [1 – 4094].
ras (config)# no vlan 2