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4.5.1 VLAN Port Configuration
VLAN Port Configuration allows you to set up VLAN port parameters to
specific port. These parameters include PVID, Accept Frame Type and
Ingress Filtering.
Figure 4.5-2 Web UI of VLAN configuration.
PVID:
The abbreviation of the
Port VLAN ID
. Enter port VLAN ID here.
PVID allows the switches to identify which port belongs to which VLAN. To
keep things simple, it is recommended that PVID is equivalent to VLAN IDs.
The values of PVIDs are from 0 to 4095. But, 0 and 4095 are reserved. You
can’t input these 2 PVIDs. 1 is the default value. 2 to 4094 are valid and
available in this column. Type the PVID you’d like to configure here.
Accept Frame Type:
This column defines the accepted frame type of the
port. There are 2 modes you can select,
Admit All
and
Tag Only
. Admit All
mode means that the port can accept both tagged and untagged packets.
Tag Only mode means that the port can only accept tagged packets.
Ingress Filtering:
Ingress filtering helps VLAN engine to filter out
undesired traffic on a port. When Ingress Filtering is enabled, the port
checks whether the incoming frames belong to the VLAN they claimed or
not. Then the port determines if the frames can be processed or not. For
example, if a tagged frame from Engineer VLAN is received, and Ingress
Filtering is enabled, the switch will determine if the port is on the Engineer
VLAN’s Egress list. If it is, the frame can be processed. If it’s not, the frame
would be dropped.
