Vlan Table; Security Level - Optical Systems Design OSD2244V Series Operator's Manual

3.2.5

VLAN TABLE

The VLAN Table (accessed via the CLI) displays the database of OSD2244V's VLAN setup. It
indicates all information relevant to the VID including membership, egress mode of every member port
and priority level for this OSD2244V VID. Each of the entries in the VLAN table represents a VLAN
group, which is identified by its VID.
Once a frame goes into OSD2244V, it will be processed by the Ingress Manager first. The VID of a
Tagged Frame may be modified if VID Override function is enabled. Then the renewed VID is used to
look up the VLAN Table. If a non-ring port of this OSD2244V is a member of this VID, this frame will
be forwarded to it.
Ring ports (port4 and port5) are members of every VLAN entry, and every ingressing frame is allowed
to exit them.
By using a PC and CLI, an entry of VLAN can be added or deleted from the VLAN Table. Once
802.1Q VLAN is enabled on OSD2244V, a VLAN Entry with VID = 1 is added into VLAN Table
automatically including all ports as its member. See Figure 33 as an example. This table indicates all
the VID associated with the OSD2244V the PC is connected to.
3.2.6

SECURITY LEVEL

Every non-ring port (port 1, port 2, port 3) has two possible Security Level settings – High or Low:
High Level:
The VID of an ingressing frame must be contained in the VLAN Table and the ingress
port must be a member of this VLAN, otherwise the frame is discarded. Only member
port (s) of this VLAN is allowed for the frame to exit.
Low Level:
An ingressing frame will not be discarded if the ingress port is not a member of the
frame's VID. But still, only member port (s) of this VLAN is allowed for the frame to
exit.
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OPTICAL SYSTEMS DESIGN
FIGURE 33: VLAN TABLE EXAMPLE
OSD2244V OPERATOR MANUAL
DOC ID: 10111103