3Com 10014299 manual Specify address mapping to the peer

Typical X.25 Configuration Example 225

eSpecify address mapping to the peer

[Router-Serial0]x25 map ip 202.38.160.2 x121-address 20112452

fAs this is a direct connection, the flow control parameters can be increased slightly

[Router-Serial0]x25 packet-size 1024 1024

[Router-Serial0]x25window-size

2Configure Router B:

aSelect interface

[Router]interface serial 1

bSpecify IP address for this interface

Connect the Router to X.25 Public Packet Network

[Router-Serial1]ip address 202.38.160.2 255.255.255.0

cConfigure the link layer protocol of the interface to X.25 and specify its working mode as DCE

[Router-Serial1]link-protocol x25 dce

dSpecify X.121 address of this interface

[Router-Serial1]x25 x121-address 20112452

eSpecify address mapping to the peer

[Router-Serial1]x25 map ip 202.38.160.1 x121-address 20112451

fAs this is a direct connection, the flow control parameters can be increased slightly

[Router-Serial1]x25 packet-size 1024 1024

[Router-Serial1]x25 window-size 5 5

I. Networking Requirement

As shown in the diagram below, three routers A, B and C are connected to the same X.25 network for mutual communication. The requirements are:

■IP addresses of the interfaces Serial0 of three routers are 168.173.24.1, 168.173.24.2 and 168.173.24.3 respectively.

■X.121 addresses assigned to the three routers by the network are 30561001, 30561002 and 30561003 respectively.

■Standard window size supported by the packet network: both receiving window and sending window are 5.

■Standard maximum packet length: both maximum receiving packet length and maximum sending packet length are 512.

■Channel range: permanent virtual circuit section, incoming-only channel section and outgoing-only channel section are disabled, two-way channel section is [1, 31].