X.25 Configuration Examples 319Connecting the Routerto X.25 Public PacketNetworkNetwork requirementsAs shown in the following figure, Routers A, B, and C are connected to the sameX.25 network. The requirements are:■ The IP addresses of the interfaces Serial 2/0 of the three routers are168.173.24.1/24, 168.173.24.2/24 and 168.173.24.3/24.■ The X.121 addresses assigned to the three routers are 30561001, 30561002,and 30561003.■ The standard window size supported by the packet network: both receivingwindow and sending window are 5.■ The standard maximum packet size: both the maximum receiving packet sizeand the maximum sending packet size are 512.■ Channel range: permanent virtual circuit range, incoming-only channel rangeand outgoing-only channel range are disabled, and two-way channel range is[1, 32].Network diagramFigure 73 Connecting the router to X.25 public packet networkConfiguration procedure1 Configure Router A# Assign an IP address for the interface. system-view[RouterA] interface Serial 2/0[RouterA-Serial2/0] ip address 168.173.24.1 255.255.255.0# Access the public packet network, and configure the router to operate in DTEmode.[RouterA-Serial2/0] link-protocol x25 dte[RouterA-Serial2/0] x25 x121-address 30561001[RouterA-Serial2/0] x25 window-size 5 5[RouterA-Serial2/0] x25 packet-size 512 512[RouterA-Serial2/0] x25 vc-range bi-channel 1 32[RouterA-Serial2/0] x25 map ip 168.173.24.2 x121-address 30561002[RouterA-Serial2/0] x25 map ip 168.173.24.3 x121-address 30561003X.25 networkRouter ARouter BRouter CS2 /0168 .173 .24.1 /24X121 address: 30561001S 2/0168 .173 .24 .2 /24X121 address: 30561002S2/0168.173.24.3/24X121 address: 30561003
