Manual

7.5 Configuring load balancing......................................................................................................................7-31
7.5.1 Establishing the configuration task................................................................................................ 7-31
7.5.2 Enabling or disabling X.25 switching............................................................................................ 7-32
7.5.3 Configuring X.25 hunt group.........................................................................................................7-32
7.5.4 Configuring X.25 switching route..................................................................................................7-33
7.5.5 Checking the configuration............................................................................................................7-33
7.6 Configuring XOT..................................................................................................................................... 7-34
7.6.1 Establishing the configuration task................................................................................................ 7-34
7.6.2 Starting X.25 switching..................................................................................................................7-34
7.6.3 Configuring local switching (SVC) ............................................................................................... 7-35
7.6.4 Configuring XOT route..................................................................................................................7-35
7.6.5 Configuring optional keepalive and Xot-source attributes ............................................................ 7-36
7.6.6 Checking the configuration............................................................................................................7-37
7.7 Maintaining LAPB and X.25....................................................................................................................7-37
7.7.1 Clearing the serial interface LAPB statistics..................................................................................7-37
7.7.2 Debugging X.25............................................................................................................................. 7-38
7.8 Configuration examples............................................................................................................................7-38
7.8.1 Example for configuring LAPB..................................................................................................... 7-39
7.8.2 Example for directly connecting two routers by Using X.25.........................................................7-41
7.8.3 Example for connecting routers to an X.25 public packet network ............................................... 7-44
7.8.4 Example for configuring the VC range.......................................................................................... 7-48
7.8.5 Example for transmitting IP datagrams through X.25 PVC...........................................................7-50
7.8.6 Example for configuring X.25 sub-interfaces................................................................................ 7-52
7.8.7 Example for configuring the SVC function of XOT......................................................................7-57
7.8.8 Example for configuring the PVC function of XOT......................................................................7-61
7.8.9 Example for configuring the X.25 load balancing ......................................................................... 7-65
7.8.10 Example for configuring the X.25 load balancing carrying IP Datagrams .................................. 7-69
7.8.11 Example for configuring the TCP/IP header compression...........................................................7-73
7.9 Troubleshooting........................................................................................................................................7-75
7.9.1 LAPB is always disconnected........................................................................................................7-75
7.9.2 LAPB protocol is up, VC cannot be established..............................................................................7-75
7.9.3 X.25 Protocol cannot enter the up status ......................................................................................... 7-76
7.9.4 X.25 Protocol is up, VC cannot be established................................................................................7-76
7.9.5 Frequently reset or cleared during data transmission ...................................................................... 7-77
7.9.6 Request to set PVCs is rejected......................................................................................................7-77
7.9.7 After SVC application of XOT is configured, the ping fails..........................................................7-78
7.9.8 After PVC application of XOT is configured, the ping fails..........................................................7-78
8 Frame relay configuration .......................................................................................... 8-1
8.1 Introduction..............................................................................................................................................8-3
8.1.1 FR protocol and related concepts.....................................................................................................8-3
8.1.2 PVC standby of frame relay switching.............................................................................................8-7
Nortel Secure Router 8000 Series
____________________________________________________________________________ Configuration -WAN Access
viii
Nortel Networks Inc.
Issue 5.3 (30 March 2009)