Configuring Vc Range; Transmitting Ip Datagrams Through X.25 Pvcs - 3Com MSR 50 Series Configuration Manual

320 C 14: X.25
HAPTER

Configuring VC Range

Transmitting IP
Datagrams through X.25
PVCs
LAPB C
AND ONFIGURATION
2 Configure Router B
# Assign an IP address for the interface.
<RouterB> system-view
[RouterB] interface Serial 2/0
[RouterB-Serial2/0] ip address 168.173.24.2 255.255.255.0
# Access public packet network, and configure the router to operate in DTE mode.
[RouterB-Serial2/0] link-protocol x25 dte
[RouterB-Serial2/0] x25 x121-address 30561002
[RouterB-Serial2/0] x25 window-size 5 5
[RouterB-Serial2/0] x25 packet-size 512 512
[RouterB-Serial2/0] x25 vc-range bi-channel 1 32
[RouterB-Serial2/0] x25 map ip 168.173.24.1 x121-address 30561001
[RouterB-Serial2/0] x25 map ip 168.173.24.3 x121-address 30561003
3 Configure Router C
# Assign an IP address for the interface.
<RouterC> system-view
[RouterC] interface Serial 2/0
[RouterC-Serial2/0] ip address 168.173.24.3 255.255.255.0
# Access public packet network, configure the router to operate in DTE mode.
[RouterC-Serial2/0] link-protocol x25 dte
[RouterC-Serial2/0] x25 x121-address 30561003
[RouterC-Serial2/0] x25 window-size 5 5
[RouterC-Serial2/0] x25 packet-size 512 512
[RouterC-Serial2/0] x25 vc-range bi-channel 1 32
[RouterC-Serial2/0] x25 map ip 168.173.24.1 x121-address 30561001
[RouterC-Serial2/0] x25 map ip 168.173.24.2 x121-address 30561002
Network requirements
The link layer protocol of the router interface Serial 2/0 is X.25, and VC ranges as
follows: PVC range [1, 8], incoming-only channel range [9, 16], two-way channel
range [17, 1024], and outgoing-only channel range is disabled.
Configuration procedure
<Router> system-view
[Router] interface serial 2/0
[Router-Serial2/0] link-protocol x25
[Router-Serial2/0] x25 vc-range in-channel 9 16 bi-channel 17 1024
[Router-Serial2/0] shutdown
[Router-Serial2/0] undo shutdown
Network requirements
In the following diagram, the PVC range that the packet network allows is [1,
■
8]. The PVC numbers assigned to Router A and Router B are 3 and 4.
The IP addresses of LAN 1 and LAN 2 are 202.38.165.0/24 and
■
196.25.231.0/24.