ADTRAN TA 544 User Manual

Contents

TA 544 User Manual © 2001, ADTRAN, Inc.TA 544 User Manual/61200704L1-1APage 34 of 68RIPUse this menu to enable RIP on the LAN interface.Proxy ARPThis feature allows the network portion of a group of addresses to be shared among several physicalnetwork segments. The ARP protocol provides a way for devices to create a mapping between physicaladdresses and logical IP addresses. Proxy ARP makes use of this mapping feature by instructing arouter to answer ARP requests as a "proxy" for the IP addresses behind one of its ports. The devicewhich sent the ARP request will then correctly assume that it can reach the requested IP address bysending packets to the physical address that was returned. This technique effectively hides the fact thata network has been (further) subnetted. If this option is set to Y ES, when an ARP request is received onthe Ethernet port the address is looked up in the IP routing table. If the forwarding port is not on theEthernet port and the route is not the default route, the TA 544 will answer the request with its ownhardware address.MAC AddressThis is a read-only MAC address programmed at ADTRAN.M ODE Enables or disables RIP.PROTOCOL Specifies the RIP protocol. Choices are V1(which is RIP version 1) or V2 (RIP version 2).M ETHOD Specifies the way the RIP protocol sends out itsadvertisements. Choices are given below.N ONE All routes in the router table are advertisedwith no modification of the metrics.SPLIT H ORIZON Only routes not learned from this circuit areadvertised.POISON REVERSE (def) All routes are advertised, but the routeslearned from this port are “poisoned” with aninfinite metric.D IRECTION Allows the direction at which RIP advertise-ments are sent and listened to be specified.TX AND RX (def) RIP advertisements are periodicallytransmitted and are listened to on this port.TX ONLY RIP advertisements are periodicallytransmitted but are not listened to on thisport.RX O NLY RIP advertisements are not transmitted onthis port, but are listened.V2 SECRET Enter the secret used by RIP version 2 here.