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28 FSU 5622 ESP User Manual 61200.175L1-1

Chapter 4. Applications

SNA and LAN Application with SNMP/TELNET Management

When used in a mixed environment consisting of both SNA and

LAN networks, the FSU 5622 ESP serves as a concentrator,

allowing both networks access to one frame relay link. The

example shown in Figure 4-2 shows DTE 1 configured for SDLC

protocol (as in the previous example). DTE 2 is configured for

frame relay protocol, providing the LAN gateway/router with

frame relay access.

The FSU 5622 ESP routes data at the DLCI level using the DTE 2

frame relay address table. The FSU 5622 ESP emulates the

network end of the UNI signaling protocol for the DTE port

while emulating the CPE end for the network port. PVC status

information from the frame relay network is stored and used for

full status requests from the router attached to the DTE port.

A local DLCI is set up between the router and the FSU 5622 ESP.

This Management DLCI carries the SNMP and TELNET traffic

destined for the FSU 5622 ESP. This DLCI is included in the UNI

full status responses to the router. The FSU 5622 ESP IP address

must be mapped to the management DLCI in the LAN router's

route table (see the following note). With this path, an SNMP

manager located anywhere in the network can access the FSU

5622 ESP's SNMP and TELNET information. See Table 4-B for an

example configuration.

RIP and inverse ARP are not used for the FSU 5622 ESP DTE frame

relay port.

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ADTRAN 1204006L1 Manual de usuario Pagina 44