Typical Configuration Of X.25 on AR28、AR46 Series Router--Connecting the Router to the X.25 PPSN

Typical Configuration Of X.25 on AR28、AR46 Series Router--Connecting the Router to the X.25 PPSN

[Requirements]

RouterA serves as the headquarters, and the branches RouterB and RouterC are interconnected through the X.25 PPSN.

[Networking diagram]

[Configuration script]

Configuration script (RouterA)

# sysname RouterA # radius scheme system # domain system # interface Serial1/0 link-protocol x25                    /Set the encapsulation mode to X.25/ x25 x121-address 30561001            /Configure the local x121 address/ x25 vc-range bi-channel 1 16         /Set HTC to 16/ x25 map ip 168.173.24.2 x121-address 30561002     /Configure static address mapping to RouterB/ x25 map ip 168.173.24.3 x121-address 30561003     /Configure static address mapping to RouterC/ ip address 168.173.24.1 255.255.255.0 # interface Ethernet0/0 ip address 192.168.1.1 255.255.255.0 # interface NULL0 # user-interface con 0 user-interface vty 0 4 # return

Configuration script (RouterB)

# sysname RouterB # radius scheme system # domain system # interface Serial1/0/0 link-protocol x25                   /Set the encapsulation mode to X.25/ x25 x121-address 30561001           /Configure the local x121 address/ x25 vc-range bi-channel 1 16        /Set HTC to 16/ x25 map ip 168.173.24.1 x121-address 30561001    /Configure static address mapping to RouterA/ x25 map ip 168.173.24.3 x121-address 30561003    /Configure static address mapping to RouterC/ ip address 168.173.24.2 255.255.255.0 # interface Ethernet0/0 ip address 192.168.2.1 255.255.255.0 # interface NULL0 # user-interface con 0 user-interface vty 0 4 # return

Configuration script (RouterC)

# sysname RouterC # radius scheme system # domain system # interface Serial1/0/0 link-protocol x25                 /Set the encapsulation mode to X.25/ x25 x121-address 30561003         /Configure the local x121 address/ x25 vc-range bi-channel 1 16      /Set HTC to 16/ x25 map ip 168.173.24.1 x121-address 30561001       /Configure static address mapping to RouterA/ x25 map ip 168.173.24.2 x121-address 30561002       /Configure static address mapping to RouterB/ ip address 168.173.24.3 255.255.255.0 # interface Ethernet0/0 ip address 192.168.3.1 255.255.255.0 # interface NULL0 # user-interface con 0 user-interface vty 0 4 # return

Configuration script (Switch–SVC)

# sysname switch # x25 switching                       /Enable X.25 switching/ # radius scheme system # domain system # interface Serial2/0/0 link-protocol x25 dce               /Set X.25 working in the DCE mode/ # interface Serial2/0/1 link-protocol x25 dce               /Set X.25 working in the DCE mode/ # interface Serial2/0/2 link-protocol x25 dce               /Set X.25 working in the DCE mode/ # interface NULL0 # x25 switch svc 30561001 interface Serial2/0/0     /Configure SVC routing/ x25 switch svc 30561002 interface Serial2/0/1 x25 switch svc 30561003 interface Serial2/0/2 # user-interface con 0 user-interface vty 0 4 # return

 

[Verification]

The headquarters can interwork with the branches.

X.25 vc information on RouterA:

<RouterA>disp x25 vc

Interface: Serial1/0

SVC 15

State: P4(transmit)

Map: ip 168.173.24.3 to 30561003

Window size: input 2  output 2

Packet Size: input 128  output 128

Local PS: 1  Local PR: 1  Remote PS: 0  Remote PR: 1

Local Busy: FALSE  Reset times: 0

Input/Output:

DATA 1/1  INTERRUPT 0/0

RR 0/0  RNR 0/0  REJ 0/0

Bytes 84/84

Send Queue(Current/Max): 0/200

Interface: Serial1/0

SVC 16

State: P4(transmit)

Map: ip 168.173.24.2 to 30561002

Window size: input 2  output 2

Packet Size: input 128  output 128

Local PS: 1  Local PR: 1  Remote PS: 0  Remote PR: 1

Local Busy: FALSE  Reset times: 0

Input/Output:

DATA 1/1  INTERRUPT 0/0

RR 0/0  RNR 0/0  REJ 0/0

Bytes 84/84

Send Queue(Current/Max): 0/200

 

X.25 route table information on the switch:

<switch>disp x25 switch-table svc dynamic                                

  #1     (In: Serial2/0/0  - SVC16  ) <--> (Out: Serial2/0/1  - SVC1   )

  #2     (In: Serial2/0/0  - SVC15  ) <--> (Out: Serial2/0/2  - SVC1   )

 [Tip]

1. The X121 address is provided by the ISP, and is meaningful globally, similar to the telephone number.

2. The HTC parameter is also provided by the ISP, and defaults to [1,1024]. You must use the x25 vc-range bi-channel 1 16 command to change it to that value; otherwise, the equipment fails to ping the peer address.