Chapter 3 Installing the Router
Configuration Changes
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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
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Line Card Interfaces
Because of the wide variety of line cards supported by Cisco 12006 and
Cisco 12406 Routers, you should see the configuration note that shipped with a
particular card for interface configuration information. This section provides
several examples to show the general way the setup command utility handles line
card interface configuration.
The following sample excerpt from a System Configuration Dialog session for a
Quad OC-3cPOS line card shows settings for a typical configuration:
Configuring interface POS3/0:
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 255.9.0
Configure CLNS on this interface?: yes
Note By default, POS interfaces use the 32-bit cyclic redundancy check (CRC) and
high-level data link control (HDLC) as the encapsulation protocol.
The following sample shows the same Quad OC-3c POS line card interface being
configured for IP unnumbered:
Configuring interface POS3/0:
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
In the following sample, an ATM line card is being configured to use IP:
Configuring interface parameters:
Configuring interface ATM1/0:
Is this interface in use?: yes
Configure IP on this interface?: yes
IP address for this interface: 1.1.1.2
Number of bits in subnet field: 0
Class A network is 1.0.0.0, 0 subnet bits; mask is 255.9.8.0