EXP Computer S200 manual Setting Up WAN Operation for Bridging

			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.
		Codex Proprietary Protocol ID
		LAN Connection Subaddress

	Node 1
LAN	Bridge 1
	Half	WAN
AAA	Bridge 2
	Half

Node 3

LAN	Bridge 2
	Half
DDD	Bridge 3
	Half

Node 2

Bridge 1

Half

Bridge 3

Half

SVC Connectors

LAN CCC

Figure 13. Interface Connections Between WAN and LAN

Critical Parameters Before you can use a PathBuilder S200 series switch as a bridge to connect LANs for WAN Operation 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 The Protocol Identifier (ID) is placed on the Call User Data field of the Call Request

Protocol IDpacket. 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.

Bridging 19

T0008-16F Release 5.2M