Connecting The Router To X.25 Public Packet Network - 3Com MSR 50 Series Configuration Manual

Connecting the Router
to X.25 Public Packet
Network
Network requirements
As shown in the following figure, Routers A, B, and C are connected to the same
X.25 network. The requirements are:
The IP addresses of the interfaces Serial 2/0 of the three routers are
■
168.173.24.1/24, 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 receiving
■
window and sending window are 5.
The standard maximum packet size: both the maximum receiving packet size
■
and the maximum sending packet size are 512.
Channel range: permanent virtual circuit range, incoming-only channel range
■
and outgoing-only channel range are disabled, and two-way channel range is
[1, 32].
Network diagram
Figure 73 Connecting the router to X.25 public packet network
X121 address: 30561002
X.25 network
S2 /0
168 .173 .24.1 /24
Router A
X121 address: 30561001
Configuration procedure
1 Configure Router A
# Assign an IP address for the interface.
<RouterA> 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 DTE
mode.
[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 30561003
S 2/0
168 .173 .24 .2 /24
Router B
S2/0
168.173.24.3/24
X121 address: 30561003
Router C
X.25 Configuration Examples 319