ADTRAN Express 4110, User Manual

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Chapter 3. Terminal Menu Operation and Structure
61200176L3-1 Express 4110/4120 User Manual 3-25
Configuration/Bridge
The Bridge menu is used to set up the bridge parameters for the Express
4110/4120. 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 rout-
ing. 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 4110/4120
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 4110/4120 bridge func-
tion will be enabled. Setting it to Off will disable all bridge functionality.