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IP Address Overview 323
Table 355 Configure IP address unnumbered
By default, the interface has no IP address.
2 Display IP address unnumbered
Table 356 Display IP address unnumbered
Configuration Example I. Configuration Requirements
Suppose the headquarters of a company is in Beijing, with subsidiary offices in
Shenzhen and Shanghai and one office in Wuhan. R is the headquarters router,
which connects the subsidiaries and office routers R1, R2 and R3 via PSTN. The
four routers R, R1, R2 and R3 all have its serial port for dialing and one Ethernet
interface to connect with local network.
II. Networking Diagram
Figure 120 Networking diagram of IP address unnumbered configuration
III. Configuration Procedure
1 Configure headquarters router R
[Router-Ethernet0] ip address 172.16.10.1 255.255.255.0
a Borrow IP address of Ethernet interface 0:
[Router-Serial0] ip address unnumbered Ethernet0
[Router-Serial0] link-protocol ppp
b Configure routing to Ethernet segment of Shenzhen router R1:
[Router] ip route-static 172.16.20.0 255.255.255.0 172.16.20.1
c Configure the interface routing to Shenzhen router R1 serial port
[Router] ip route-static 172.16.20.1 255.255.255.255 serial0
Operation Command
Activate IP address unnumbered ip address unnumbered
interface-type
interface-number
Deactivate IP address unnumbered undo ip address unnumbered
Operation Command
Display information of interface borrowing IP
address
display interfaces [type
number]
Display the current configuration information. display current-configuration
Quidway
Quidway router
Quidway
Quidway
R1 ( Shenzhen)
R2 (Shanghai)
R3 ( Wuhan)
R
(
Beijing
Headquarter)
PSTN
Router
Router
Router
Router