ADTRAN 1200070L1 - Manual (Page 66)

Chapter 3: Terminal Menu Operation and Structure
50 Express XL/XLT User Manual 61200.070L1-1
Configuration/Bridge
The Bridge menu is used to set up the bridge parameters for the Express XL/
XLT. The bridging function runs at the Media Access Control (MAC) level
which allows any protocol packets that run over Ethernet to be forwarded.
Bridging can run concurrently with the IP and IPX routing. However, certain
rules apply for when packets are bridged across a WAN connection. When IP
routing is active, IP packets (which include ARP packets) are not bridged.
When IPX routing is active, IPX packets are not bridged. Also, the WAN IP
Bridge and WAN IPX Bridge menus allow the WAN connection to bridge
packets to the Express XL/XLT but get routed as soon as they arrive at the
unit. Figure 3-6 shows the Bridge menu.
Figure 3-6
Configuration/Bridge Screen
Bridge/Mode
Write security: 2; Read security: 5
When this option is set to On (def), the Express XL/XLT bridge function will
be enabled. Setting it to Off will disable all bridge functionality.
Bridge/WAN IP Bridge
When IP routing is active, the Express XL/XLT will allow another WAN de-
vice to bridge IP packets to it using PPP BCP. Normally, two IP routers would