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Example: Channelized OC3 IQ Interface Configuration

Figure 1: Channelized OC3 IQ Interface Example
Channelized OC3 IQ Interface Example

Figure 1 shows a sample channelization structure for a channelized OC3 IQ interface. Top-level partitions 1, 2, and 3 create channelized OC1 interfaces. The first channelized OC1 interface, coc1-0/0/0:1, is converted directly into the T3 interface t3-0/0/0:1. The second channelized OC1 interface, coc1-0/0/0:2, is partitioned into a T1 interface and a channelized T1 interface. The channelized T1 interface, t1-0/0/0:2:2, is then further subdivided into two NxDS0 channel groups: ds-0/0/0:2:2:1 and ds-0/0/0:2:2:2.

The remaining channelized OC1 interface, coc1-0/0/0:3, is converted to a channelized T3 interface, then to a channelized T1 interface, and ultimately to 14 individual NxDS0 channels and a channel group containing 10 NxDS0 channels. Additionally, channelized OC3 IQ interface coc3-0/1/0 uses the no-partition statement at the [edit interface interface-name] hierarchy level to create a clear channel SONET OC3 interface so-0/1/0. This example shows two NxDS0 mapping methods. Partition 2:x:x uses VT mapping for SONET/SDH equipment, while partition 3:x:x uses M13 mapping for North American T-carrier equipment.

This example also assumes corresponding interfaces. For example, for every sublevel T1 interface you configure on Router A, assume you have configured a matching sublevel or physical T1 interface on a neighboring router.

Router A

Verifying Your Work

To verify correct operation of a channelized OC3 IQ interface, use the following commands:

  • show interfaces

  • show interfaces controller

  • show interfaces interval (for channelized OC3, OC3, T3, channelized T3, T1, and channelized T1 channels)

To view the interface names of the physical channelized OC3 IQ interface and the resulting interfaces configured on the channelized IQ interface, use the show interfaces controller command:

user@host> show interfaces controller coc3-0/0/0

To verify that your channelized IQ interfaces are working as expected, use the show interfaces command. Use the show interfaces controller command to find the name of the channelized interface you want to view; then include this channelized name (for example, ct3-0/0/0:3) as an option with the show interfaces command.

The next sections provide sample show interfaces output for each of the major interface types configured in this example:

Channelized OC3

user@host> show interfaces coc3-0/0/0

Channelized OC1

user@host> show interfaces coc1-0/0/0:1


user@host> show interfaces t3-0/0/0:1

Channelized T3

user@host> show interfaces ct3-0/0/0:3


user@host> show interfaces t1-0/0/0:2:1

Channelized T1

user@host> show interfaces ct1-0/0/0:2:2


user@host> show interfaces ds-0/0/0:2:2:1

Clear Channel SONET OC3

user@host> show interfaces so-0/1/0