Installation manual

3-205
SIGNAMAX LLC • www.signamax.eu
Protocol VLANs
The network devices required to support multiple protocols cannot be easily grouped into
a common VLAN. This may require non-standard devices to pass traffic between different
VLANs in order to encompass all the devices participating in a specific protocol. This kind
of configuration deprives users of the basic benefits of VLANs, including security and
easy accessibility.
To avoid these problems, you can configure this switch with protocol-based VLANs that
divide the physical network into logical VLAN groups for each required protocol. When a
frame is received at a port, its VLAN membership can then be determined based on the
protocol type being used by the inbound packets.
Command Usage
To configure protocol-based VLANs, follow these steps:
1. First configure VLAN groups for the protocols you want to use (page 3-184). Although
not mandatory, we suggest configuring a separate VLAN for each major protocol
running on your network. Do not add port members at this time.
2. Create a protocol group for each of the protocols you want to assign to a VLAN using
the Protocol VLAN Configuration page.
3. Then map the protocol for each interface to the appropriate VLAN using the Protocol
VLAN Port Configuration page.
Configuring Protocol VLAN Groups
Use the Protocol VLAN Configuration menu to create or remove protocol groups.
Command Attributes
• Protocol Group ID – Protocol Group ID assigned to the Protocol VLAN Group. (Range:
1-2147483647)
• Frame Type – Choose either Ethernet, RFC 1042, or LLC Other as the frame type used
by this protocol.
• Protocol Type – Specifies the protocol type to match. The available options are IP,
ARP, and RARP. If LLC Other is chosen for the Frame Type, the only available Protocol
Type is IPX Raw
Note:
Traffic which matches IP Protocol Ethernet Frames is mapped to the VLAN (VLAN 1)
that has been configured with the switch’s administrative IP. IP Protocol Ethernet traffic
must not be mapped to another VLAN or you will lose administrative network
connectivity to the switch. If lost in this manner, network access can be regained by
removing the offending Protocol VLAN rule via the console. Alternately, the switch can
be power-cycled, however all unsaved configuration changes will be lost.