Manual

9 HDLC configuration
Nortel Secure Router 8000 Series
Configuration -WAN Access
9.4.2 Example for configuring IP address unnumbered for HDLC
Networking requirements
Connect Router A and Router B through the POS interface, and require them to run HDLC.
POS 1/0/0 of Router A borrows the IP address of Loopback interface. The mask of Loopback
interface is 32 bits.
Figure 9-2 Networking diagram of the HDLC basic function
Loopbacki
100.1.1.1/24
POS1/0/0
RouterA
POS1/0/0
100.1.1.2/24^ ^3
RouterB
Configuration roadmap
The configuration roadmap is as follows:
1. Configure the link protocol of each interface to HDLC.
2. On Router A, configure the IP address of the loopback interface whose IP address is
unnumbered.
3. Configure the POS interface on Router A to adopt the IP address unnumbered.
4. Configure Router A to learn the opposite routing information through the static route.
5. Configure the IP address of Router B.
Data preparation
To configure the IP address unnumbered, you need the following data:
• The IP address of the loopback interface on Router A is 100.1.1.1/32.
• The IP address of the POS interface on Router B is 100.1.1.2/24.
Configuration procedure
Step 1 Configure Router A.
<Nortel> system-view
[Nortel] sysname RouterA
[RouterA] interface loopbacki
[RouterA-LoopBackl] ip address 100.1.1.1 32
[RouterA-LoopBackl] quit
[RouterA] interface pos 1/0/0
[RouterA-Pos1/0/0]
[RouterA-Pos1/0/0]
[RouterA-Pos1/0/0]
[RouterA-Pos1/0/0]
[RouterA-Pos1/0/0]
link-protocol hdlc
ip address unnumbered interface loopback1
shutdown
undo shutdown
quit
9-8 Nortel Networks Inc. Issue 5.3 (30 March 2009)