Cisco Gigabit Switch Router 12008 Installation And Configuration Manual page 206

Configuring the Cisco 12008
Step 3
4-22
Cisco 12008 Gigabit Switch Router Installation and Configuration Guide
Also, consider Step 3 below, which shows this same Quad OC-3c POS line card
interface being configured for IP unnumbered; perform whichever step is
appropriate to your configuration requirements.
Configuring interface POS4/0:
Is this interface in use?: yes
Configure IP on this interface?: yes
Configure IP unnumbered on this interface?: no
IP address for this interface: 2.1.1.1
Number of bits in subnet field: 0
Class A network is 2.0.0.0, 0 subnet bits; mask is 255.0.0.0
Configure CLNS on this interface?: yes
For POS interfaces, the cyclic redundancy check (CRC) is 32-bits by
Note
default.
For POS interfaces, the encapsulation protocol is HDLC by default.
Note
For more complete POS interface configuration information, refer to the
documents entitled Quad OC-3c/STM-1c Packet-Over-SONET Line Card
Installation and Configuration (document number 78-4333-02) and OC-12c/
STM-4c Packet-Over-SONET Line Card Installation and Configuration
(document number 78-4341-02). These documents accompanied the shipment
of your Quad OC-3c/STM-1c and OC-12c/STM-4c POS line cards, respectively.
Configure the POS line card interface(s).
In the following sample configuration dialog, a Quad OC-3c POS line card
interface is being configured to use IP unnumbered:
Configuring interface POS4/0:
Is this interface in use?: yes
Configure IP on this interface?: yes
Configure IP unnumbered on this interface?: yes
Assign to which interface: ethernet0
Configure CLNS on this interface?: yes