3Com Router User Manual
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Page 231
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Typical X.25 Configuration Example227
[Router-Serial0]x25 map ip 168.173.24.1 x121-address 30561001
[Router-Serial0]x25 map ip 168.173.24.2 x121-address 30561002
Configure Virtual Circuit
RangeI. Networking Requirement
The link layer protocol of routers interface Serial0 is X.25l, with the virtual circuit
range: permanent virtual circuit section [1, 8], incoming-only channel section [9,
16], two-way channel section [17, 1024], and the outgoing-only channel section is
disabled.
II. Configuration...](http://img.usermanuals.tech/thumb/92/102800/w300_index.html@nav=null&now=get&message=Downloading&file=3012-230.png "Page 231
Typical X.25 Configuration Example227
[Router-Serial0]x25 map ip 168.173.24.1 x121-address 30561001
[Router-Serial0]x25 map ip 168.173.24.2 x121-address 30561002
Configure Virtual Circuit
RangeI. Networking Requirement
The link layer protocol of routers interface Serial0 is X.25l, with the virtual circuit
range: permanent virtual circuit section [1, 8], incoming-only channel section [9,
16], two-way channel section [17, 1024], and the outgoing-only channel section is
disabled.
II. Configuration...")
Typical X.25 Configuration Example227 [Router-Serial0]x25 map ip 168.173.24.1 x121-address 30561001 [Router-Serial0]x25 map ip 168.173.24.2 x121-address 30561002 Configure Virtual Circuit RangeI. Networking Requirement The link layer protocol of routers interface Serial0 is X.25l, with the virtual circuit range: permanent virtual circuit section [1, 8], incoming-only channel section [9, 16], two-way channel section [17, 1024], and the outgoing-only channel section is disabled. II. Configuration...
Page 232
![Page 232
228CHAPTER 16: CONFIGURING LAPB AND X.25
[Router-Ethernet0]ip address 196.25.231.1 255.255.255.0
[Router-Ethernet0]interface serial 0[Router-Serial0]ip address
192.149.13.2 255.255.255.0
[Router-Serial0]link-protocol x25
[Router-Serial0]x25 x121-address 1004358902
[Router-Serial0]x25 vc-range bi-channel 8 1024
[Router-Serial0]x25 pvc 4 ip 192.149.13.1 x121-address 1004358901
broadcast packet-size 512 512 window-size 5 5
[Router-Serial0]quit
[Router]rip
In above configuration, the permanent virtual...](http://img.usermanuals.tech/thumb/92/102800/w300_index.html@nav=null&now=get&message=Downloading&file=3012-231.png "Page 232
228CHAPTER 16: CONFIGURING LAPB AND X.25
[Router-Ethernet0]ip address 196.25.231.1 255.255.255.0
[Router-Ethernet0]interface serial 0[Router-Serial0]ip address
192.149.13.2 255.255.255.0
[Router-Serial0]link-protocol x25
[Router-Serial0]x25 x121-address 1004358902
[Router-Serial0]x25 vc-range bi-channel 8 1024
[Router-Serial0]x25 pvc 4 ip 192.149.13.1 x121-address 1004358901
broadcast packet-size 512 512 window-size 5 5
[Router-Serial0]quit
[Router]rip
In above configuration, the permanent virtual...")
228CHAPTER 16: CONFIGURING LAPB AND X.25 [Router-Ethernet0]ip address 196.25.231.1 255.255.255.0 [Router-Ethernet0]interface serial 0[Router-Serial0]ip address 192.149.13.2 255.255.255.0 [Router-Serial0]link-protocol x25 [Router-Serial0]x25 x121-address 1004358902 [Router-Serial0]x25 vc-range bi-channel 8 1024 [Router-Serial0]x25 pvc 4 ip 192.149.13.1 x121-address 1004358901 broadcast packet-size 512 512 window-size 5 5 [Router-Serial0]quit [Router]rip In above configuration, the permanent virtual...
Page 233
![Page 233
Typical X.25 Configuration Example229
II. Networking Diagram
Figure 72 Diagram of X.25 sub-interface configuration
III. Configuration Procedure
1Configure Router A:
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte
[Router-Serial0]x25 x121-address 100
[Router-Serial0]interface serial 0.1
aCreate sub-interface serial 0.1
[Router-Serial0.1]ip address 10.1.1.2 255.255.0.0
[Router-Serial0.1]x25 map ip 10.1.1.1 x121-address 200
bCreate sub-interface serial 0.2
[Router-Serial0.1]interface...](http://img.usermanuals.tech/thumb/92/102800/w300_index.html@nav=null&now=get&message=Downloading&file=3012-232.png "Page 233
Typical X.25 Configuration Example229
II. Networking Diagram
Figure 72 Diagram of X.25 sub-interface configuration
III. Configuration Procedure
1Configure Router A:
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte
[Router-Serial0]x25 x121-address 100
[Router-Serial0]interface serial 0.1
aCreate sub-interface serial 0.1
[Router-Serial0.1]ip address 10.1.1.2 255.255.0.0
[Router-Serial0.1]x25 map ip 10.1.1.1 x121-address 200
bCreate sub-interface serial 0.2
[Router-Serial0.1]interface...")
Typical X.25 Configuration Example229 II. Networking Diagram Figure 72 Diagram of X.25 sub-interface configuration III. Configuration Procedure 1Configure Router A: [Router]interface serial 0 [Router-Serial0]link-protocol x25 dte [Router-Serial0]x25 x121-address 100 [Router-Serial0]interface serial 0.1 aCreate sub-interface serial 0.1 [Router-Serial0.1]ip address 10.1.1.2 255.255.0.0 [Router-Serial0.1]x25 map ip 10.1.1.1 x121-address 200 bCreate sub-interface serial 0.2 [Router-Serial0.1]interface...
Page 234
![Page 234
230CHAPTER 16: CONFIGURING LAPB AND X.25
SVC Application of XOTI. Networking Requirement
Router B and C connect through Ethernet interface, and build TCP connection
between them. X.25 packets forward through TCP, and configure SVC to
implement the SVC function.
II. Networking Diagram
Figure 73 SVC application networking diagram of XOT
III. Configuration Procedure
1Configure Router A
aBasic X.25 Configuration
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte ietf
[Router-Serial0]x25...](http://img.usermanuals.tech/thumb/92/102800/w300_index.html@nav=null&now=get&message=Downloading&file=3012-233.png "Page 234
230CHAPTER 16: CONFIGURING LAPB AND X.25
SVC Application of XOTI. Networking Requirement
Router B and C connect through Ethernet interface, and build TCP connection
between them. X.25 packets forward through TCP, and configure SVC to
implement the SVC function.
II. Networking Diagram
Figure 73 SVC application networking diagram of XOT
III. Configuration Procedure
1Configure Router A
aBasic X.25 Configuration
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte ietf
[Router-Serial0]x25...")
230CHAPTER 16: CONFIGURING LAPB AND X.25 SVC Application of XOTI. Networking Requirement Router B and C connect through Ethernet interface, and build TCP connection between them. X.25 packets forward through TCP, and configure SVC to implement the SVC function. II. Networking Diagram Figure 73 SVC application networking diagram of XOT III. Configuration Procedure 1Configure Router A aBasic X.25 Configuration [Router]interface serial 0 [Router-Serial0]link-protocol x25 dte ietf [Router-Serial0]x25...
Page 235
![Page 235
Typical X.25 Configuration Example231
4Configure Router C
aStart X.25 switching
[Router]x25 switching
bConfigure X.25 local switching
[Router]x25 switch svc 2 interface serial 0
cConfigure XOT switching
[Router]x25 switch svc 1 xot 10.1.1.1
dConfigure Ethernet 0
[Router]interface ethernet 0
[Router-Ethernet0]ip address 10.1.1.2 255.0.0.0
eConfigure Serial 0
[Router-Ethernet0]interface serial 0
[Router-Serial0]link-protocol x25 dce ietf
PVC Application of XOTI. Networking Requirement
Router B and C...](http://img.usermanuals.tech/thumb/92/102800/w300_index.html@nav=null&now=get&message=Downloading&file=3012-234.png "Page 235
Typical X.25 Configuration Example231
4Configure Router C
aStart X.25 switching
[Router]x25 switching
bConfigure X.25 local switching
[Router]x25 switch svc 2 interface serial 0
cConfigure XOT switching
[Router]x25 switch svc 1 xot 10.1.1.1
dConfigure Ethernet 0
[Router]interface ethernet 0
[Router-Ethernet0]ip address 10.1.1.2 255.0.0.0
eConfigure Serial 0
[Router-Ethernet0]interface serial 0
[Router-Serial0]link-protocol x25 dce ietf
PVC Application of XOTI. Networking Requirement
Router B and C...")
Typical X.25 Configuration Example231 4Configure Router C aStart X.25 switching [Router]x25 switching bConfigure X.25 local switching [Router]x25 switch svc 2 interface serial 0 cConfigure XOT switching [Router]x25 switch svc 1 xot 10.1.1.1 dConfigure Ethernet 0 [Router]interface ethernet 0 [Router-Ethernet0]ip address 10.1.1.2 255.0.0.0 eConfigure Serial 0 [Router-Ethernet0]interface serial 0 [Router-Serial0]link-protocol x25 dce ietf PVC Application of XOTI. Networking Requirement Router B and C...
Page 236
![Page 236
232CHAPTER 16: CONFIGURING LAPB AND X.25
[Router-Serial0]x25 x121-address 2
[Router-Serial0]x25 x25 vc-range in-channel 10 20 bi-channel 30 1024
[Router-Serial0]x25 pvc 1 ip 1.1.1.1 x121-address 1
[Router-Serial0]ip address 1.1.1.2 255.0.0.0
3Configure Router B
aStart X.25 switching
[Router]x25 switching
bConfigure Ethernet 0
[Router]interface ethernet 0
[Router-Ethernet0]ip address 10.1.1.1 255.0.0.0
cConfigure Serial 0
[Router-Ethernet0]interface serial 0
[Router-Serial0]link-protocol x25 dce ietf...](http://img.usermanuals.tech/thumb/92/102800/w300_index.html@nav=null&now=get&message=Downloading&file=3012-235.png "Page 236
232CHAPTER 16: CONFIGURING LAPB AND X.25
[Router-Serial0]x25 x121-address 2
[Router-Serial0]x25 x25 vc-range in-channel 10 20 bi-channel 30 1024
[Router-Serial0]x25 pvc 1 ip 1.1.1.1 x121-address 1
[Router-Serial0]ip address 1.1.1.2 255.0.0.0
3Configure Router B
aStart X.25 switching
[Router]x25 switching
bConfigure Ethernet 0
[Router]interface ethernet 0
[Router-Ethernet0]ip address 10.1.1.1 255.0.0.0
cConfigure Serial 0
[Router-Ethernet0]interface serial 0
[Router-Serial0]link-protocol x25 dce ietf...")
232CHAPTER 16: CONFIGURING LAPB AND X.25 [Router-Serial0]x25 x121-address 2 [Router-Serial0]x25 x25 vc-range in-channel 10 20 bi-channel 30 1024 [Router-Serial0]x25 pvc 1 ip 1.1.1.1 x121-address 1 [Router-Serial0]ip address 1.1.1.2 255.0.0.0 3Configure Router B aStart X.25 switching [Router]x25 switching bConfigure Ethernet 0 [Router]interface ethernet 0 [Router-Ethernet0]ip address 10.1.1.1 255.0.0.0 cConfigure Serial 0 [Router-Ethernet0]interface serial 0 [Router-Serial0]link-protocol x25 dce ietf...
Page 237
![Page 237
Typical X.25 Configuration Example233
II. Networking Diagram
Figure 75 Networking diagram of typical configuration of X.25 hunt group
III. Configuration Procedure
1Configure RouterA
aConfigure the link layer protocol of interface Serial1 to X.25 and specify it to
operate in DCE mode.
[Router]interface serial 1
[Router-Serial1]link-protocol x25 dce
bConfigure the link layer protocol of other synchronous serial interfaces to X.25
and specify it to operate in DCE mode. Their configuration is identical...](http://img.usermanuals.tech/thumb/92/102800/w300_index.html@nav=null&now=get&message=Downloading&file=3012-236.png "Page 237
Typical X.25 Configuration Example233
II. Networking Diagram
Figure 75 Networking diagram of typical configuration of X.25 hunt group
III. Configuration Procedure
1Configure RouterA
aConfigure the link layer protocol of interface Serial1 to X.25 and specify it to
operate in DCE mode.
[Router]interface serial 1
[Router-Serial1]link-protocol x25 dce
bConfigure the link layer protocol of other synchronous serial interfaces to X.25
and specify it to operate in DCE mode. Their configuration is identical...")
Typical X.25 Configuration Example233 II. Networking Diagram Figure 75 Networking diagram of typical configuration of X.25 hunt group III. Configuration Procedure 1Configure RouterA aConfigure the link layer protocol of interface Serial1 to X.25 and specify it to operate in DCE mode. [Router]interface serial 1 [Router-Serial1]link-protocol x25 dce bConfigure the link layer protocol of other synchronous serial interfaces to X.25 and specify it to operate in DCE mode. Their configuration is identical...
Page 238
![Page 238
234CHAPTER 16: CONFIGURING LAPB AND X.25
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte
[Router-Serial0]x25 x121-address 8888
The configurations of RouterC and RouterE are identical with the configuration of
RouterB
3Configure RouterD
aConfigure link layer protocol of interface Serial 0 to X.25 and specify it to
operate in DCE mode.
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dce
bConfigure IP addresses on interface Ethernet 0.
[Router]interface ethernet 0...](http://img.usermanuals.tech/thumb/92/102800/w300_index.html@nav=null&now=get&message=Downloading&file=3012-237.png "Page 238
234CHAPTER 16: CONFIGURING LAPB AND X.25
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dte
[Router-Serial0]x25 x121-address 8888
The configurations of RouterC and RouterE are identical with the configuration of
RouterB
3Configure RouterD
aConfigure link layer protocol of interface Serial 0 to X.25 and specify it to
operate in DCE mode.
[Router]interface serial 0
[Router-Serial0]link-protocol x25 dce
bConfigure IP addresses on interface Ethernet 0.
[Router]interface ethernet 0...")
234CHAPTER 16: CONFIGURING LAPB AND X.25 [Router]interface serial 0 [Router-Serial0]link-protocol x25 dte [Router-Serial0]x25 x121-address 8888 The configurations of RouterC and RouterE are identical with the configuration of RouterB 3Configure RouterD aConfigure link layer protocol of interface Serial 0 to X.25 and specify it to operate in DCE mode. [Router]interface serial 0 [Router-Serial0]link-protocol x25 dce bConfigure IP addresses on interface Ethernet 0. [Router]interface ethernet 0...
Page 239
![Page 239
Typical X.25 Configuration Example235
Note that you must configure a virtual IP address and two static routes on
interface Serial 1 to deceive the router because two lines connected to the same
peer exist in router RouterC. Thus load balancing can be achieved because router
RouterC will deem that there are two routes connected to network segment
10.1.1.0.
1Configure RouterA
aConfigure interface Ethernet 0.
[Router]interface ethernet 0
[Router-Ethernet0]ip address 10.1.1.1 255.255.255.0
bConfigure...](http://img.usermanuals.tech/thumb/92/102800/w300_index.html@nav=null&now=get&message=Downloading&file=3012-238.png "Page 239
Typical X.25 Configuration Example235
Note that you must configure a virtual IP address and two static routes on
interface Serial 1 to deceive the router because two lines connected to the same
peer exist in router RouterC. Thus load balancing can be achieved because router
RouterC will deem that there are two routes connected to network segment
10.1.1.0.
1Configure RouterA
aConfigure interface Ethernet 0.
[Router]interface ethernet 0
[Router-Ethernet0]ip address 10.1.1.1 255.255.255.0
bConfigure...")
Typical X.25 Configuration Example235 Note that you must configure a virtual IP address and two static routes on interface Serial 1 to deceive the router because two lines connected to the same peer exist in router RouterC. Thus load balancing can be achieved because router RouterC will deem that there are two routes connected to network segment 10.1.1.0. 1Configure RouterA aConfigure interface Ethernet 0. [Router]interface ethernet 0 [Router-Ethernet0]ip address 10.1.1.1 255.255.255.0 bConfigure...
Page 240
![Page 240
236CHAPTER 16: CONFIGURING LAPB AND X.25
[Router-Serial1]x25 x121-address 3333
[Router-Serial1]ip address 2.1.1.3 255.255.255.0
[Router-Serial1]x25 map ip 1.1.1.1 x121-address 1111
[Router-Serial1]x25 map ip 2.1.1.1 x121-address 1111
[Router-Serial1]x25 map ip 1.1.1.2 x121-address 2222
[Router-Serial1]x25 map ip 2.1.1.2 x121-address 2222
gConfigure the static route to RouterA and RouterB.
[Router]ip route-static 10.1.1.0 24 1.1.1.1
[Router]ip route-static 10.1.1.0 24 2.1.1.1
[Router]ip route-static...](http://img.usermanuals.tech/thumb/92/102800/w300_index.html@nav=null&now=get&message=Downloading&file=3012-239.png "Page 240
236CHAPTER 16: CONFIGURING LAPB AND X.25
[Router-Serial1]x25 x121-address 3333
[Router-Serial1]ip address 2.1.1.3 255.255.255.0
[Router-Serial1]x25 map ip 1.1.1.1 x121-address 1111
[Router-Serial1]x25 map ip 2.1.1.1 x121-address 1111
[Router-Serial1]x25 map ip 1.1.1.2 x121-address 2222
[Router-Serial1]x25 map ip 2.1.1.2 x121-address 2222
gConfigure the static route to RouterA and RouterB.
[Router]ip route-static 10.1.1.0 24 1.1.1.1
[Router]ip route-static 10.1.1.0 24 2.1.1.1
[Router]ip route-static...")
236CHAPTER 16: CONFIGURING LAPB AND X.25 [Router-Serial1]x25 x121-address 3333 [Router-Serial1]ip address 2.1.1.3 255.255.255.0 [Router-Serial1]x25 map ip 1.1.1.1 x121-address 1111 [Router-Serial1]x25 map ip 2.1.1.1 x121-address 1111 [Router-Serial1]x25 map ip 1.1.1.2 x121-address 2222 [Router-Serial1]x25 map ip 2.1.1.2 x121-address 2222 gConfigure the static route to RouterA and RouterB. [Router]ip route-static 10.1.1.0 24 1.1.1.1 [Router]ip route-static 10.1.1.0 24 2.1.1.1 [Router]ip route-static...