Nortel Networks 8000 - Manual (Page 200)

Nortel Secure Router 8000 Series
Configuration -WAN Access
Figures
Figure 7-1 X.25 network model...........................................................................................................................7-3
Figure 7-2 X.25 protocol Layer........................................................................................................................... 7-4
Figure 7-3 X.25 packet and LAPB frame............................................................................................................ 7-5
Figure 7-4 Interrelationship between LAPB, X.25 and X.25 switching..............................................................7-6
Figure 7-5 Diagram of X.25 network load balancing.......................................................................................... 7-7
Figure 7-6 XOT typical application diagram.......................................................................................................7-8
Figure 7-7 X.25 channel division.......................................................................................................................7-16
Figure 7-8 LAN interconnection through X.25................................................................................................. 7-24
Figure 7-9 X.25 switching networking diagram................................................................................................ 7-30
Figure 7-10 Direct connection between two routers through serial interfaces (LAPB)...................................7-39
Figure 7-11 Direct connection of two routers through serial interface (X.25)................................................ 7-41
Figure 7-12 Connecting routers to an X.25 public packet network................................................................. 7-45
Figure 7-13 Networking diagram for configuring VC..................................................................................... 7-48
Figure 7-14 X.25 PVC bearing IP datagram.................................................................................................... 7-50
Figure 7-15 One VC consisting of several LCs............................................................................................... 7-51
Figure 7-16 Diagram of X.25 sub-interface configuration.............................................................................. 7-53
Figure 7-17 SVC application networking diagram of XOT.............................................................................7-57
Figure 7-18 Networking diagram of typical configuration of X.25 hunt group...............................................7-65
Figure 7-19 X.25 hunt group carrying IP data transmission............................................................................ 7-69
Figure 7-20 Direct connection of two routers through serial interfaces (X.25)............................................... 7-73
Issue 5.3 (30 March 2009) Nortel Networks Inc. iii