- 3Com Switch Owner Manual

Bridging 19
T0008-16F Release 5.2M
Setting Up WAN Operation for Bridging
Setting Up WAN Operation for Bridging
Introduction With the 3Com Bridging Protocol option, you can use PathBuilder S200 series
switches to connect remote LANs across a Wide Area Network (WAN), as shown in
Figure 13.
Figure 13. Interface Connections Between WAN and LAN
Critical Parameters
for WAN Operation
Before you can use a PathBuilder S200 series switch as a bridge to connect LANs
over a WAN, you must configure the following two parameters in the Node record
for the bridge node. In most cases, use default values:
• Codex Proprietary Protocol ID
• LAN Connection Subaddress
You also need to configure the LAN Connection Table. Entries in this table are for
the WAN Adapter and specify connections going across a wide area network, such as
X.25, Frame Relay, or other proprietary protocols.
Codex Proprietary
Protocol ID
The Protocol Identifier (ID) is placed on the Call User Data field of the Call Request
packet. This packet is generated by the Autocall used to establish a circuit for a
bridge link. If the bridge link is not configured to initiate an autocall, then this
configured value is matched with that found in an Incoming Call packet to determine
if the call should be established.
To define the Codex Proprietary Protocol ID, select a value within the designated
range. Normally you would not configure a value different from the default value.
The only reason to use a different value is if the default value conflicts with one
already in use.
It is recommended that the Protocol ID value in all network nodes be the same.
LAN
AAA
LAN
CCC
Node 1
SVC Connectors
Bridge 1
Half
Bridge 2
Half
Bridge 1
Half
Bridge 3
Half
Bridge 2
Half
Bridge 3
Half
LAN
DDD
Node 2
Node 3
WA N
Codex Proprietary Protocol ID
LAN Connection Subaddress