135Using Passport 4400 Install Tool Version 4.2RSIRemote Server Interface. A program resident within a Passport 4400 unit. Itcommunicates with the RSA on a Passport 6400 to resolve local addressrequests.SDLCSynchronous Data Link Control. A protocol used in IBM’s SNA networks.SDLC is similar to HDLC Normal Response Mode (NRM).SNASystems Network Architecture. A set of network protocols developed byIBM.signalingThe exchange of electrical information specifically concerned with theestablishment and control of connections, in a communication network.SNMPSimple Network Management Protocol. A multivendor standard networkmanagement protocol that polls components in the network, typically over anIP-based network. The protocol data units are encoded in ASN.1. SNMPconcentrates primarily on the observation and control of the network. It isdefined by RFC 1157 and RFC 1213.SPVCSwitched Permanent Virtual Circuit. Refers to a connection between aPassport 4400 unit and a Passport 6400 unit, or between Passport 6400 units.SPVCs eliminate the need to configure each node along the connection. Theend point is configured, but the connection route is selected automatically.superframe (D4)One of the framing formats for a T1 DS-1 line. It consists of 12 frames of 193bits each, with the 193rd bit providing framing information.SVCSwitched Virtual Circuit. SVCs are contained within PANL PVCs (netlinks).This type of connection is established for a communications session betweenPassport units and is terminated after the session is over.
