Allied Telesis AT-S62 - Manual (Page 617)

AT-S62 Management Software Menus Interface User’s Guide
Section V: VLANs 617
To create a protected ports VLAN, you perform many of the same steps
that you do when you create a new port-based or tagged VLAN. You give
it a name and a unique VID, and you indicate which of the ports will be
tagged and untagged. What makes creating this type of VLAN different is
that as part of the procedure you must create the individual groups within
the VLAN by assigning the ports to their groups.
Here is an example of a protected ports VLAN. The first table lists the
name of the VLAN, the VID, and the tagged and untagged ports. It also
indicates which port will function as the uplink port, in this case port 22.
The second table lists the different groups in the VLAN and the ports for
each group.
Allied Telesyn recommends that you create tables similar to this before
you create your own protected ports VLAN. You are prompted for this
information when you create the VLAN, and having the tables handy will
make the job easier.
Protected Ports
VLAN Guidelines
Following are some guidelines for implementing protected ports VLANS:
ˆ A switch can contain multiple protected ports VLANs.
ˆ A protected ports VLAN should contain a minimum of two groups. A
protected ports VLAN of only one group has little value. Create a port-
based or tagged VLAN instead.
Name Internet_VLAN_1
VID 8
Untagged Ports in
VLAN 1-10, 22, 25
Tagged Ports in
VLAN none
Uplink Port(s) 22
Group Number Port(s)
1 1-2
2 3
3 4
4 5-7
5 8
6 9-10