Chapter 3. Terminal Menu Operation and Structure61200176L1-1 Express 6100/6120 User Manual 3-21»» IPX/RIP TimerWrite security: 3; Read security: 5This value specifies how often the Express 6100/6120 sends out IPXRIP packets on the network segment attached to the Ethernet port.The RIP packets sent contain routing information about the networksfor which this Express 6100/6120 is responsible. The default value is60 seconds.»» IPX/SAP TimerWrite security: 3; Read security: 5This value specifies how often the Express 6100/6120 sends out IPXSAP (Service Access Protocol) packets on the network segment at-tached to the Ethernet port. The SAP packets sent contain informationabout the services (such as servers, printers, etc.) for which this Ex-press 6100/6120 is responsible. The default value is 60 seconds.» Configuration/BridgeThe Bridge menu is used to set up the bridge parameters for the Ex-press 6100/6120. The bridging function runs at the Media AccessControl (MAC) level which allows any protocol packets that run overEthernet to be forwarded. Bridging can run concurrently with the IPand IPX routing. However, certain rules apply for when packets arebridged across a WAN connection. When IP routing is active, IP pack-ets (which include ARP packets) are not bridged. When IPX routingis active, IPX packets are not bridged. Also, the WAN IP Bridge andWAN IPX Bridge menus allow the WAN connection to bridge packetsto the Express 6100/6120 but get routed as soon as they arrive at theunit. Figure 3-6 shows the Bridge menu.Auto-SeedThe Express 6100/6120 will listen for an IPXnetwork number being sent by another router(including Novell software routers residing onservers) on the Ethernet segment connected tothis port and use this number if it exists. If itdoes not discover a number in use, the Express6100/6120 will auto-generate a valid numberusing its routing tables.