Channel Part of an Interface Name

The channel identifier part of the interface name is required only on channelized interfaces. For channelized interfaces, channel 0 identifies the first channelized interface. For channelized QPP interfaces, channel 1 identifies the first channelized interface. A nonconcatenated (that is, channelized) SONET/SDH OC-48 interface has four OC-12 channels, numbered 0 through 3.

To determine which types of channelized PICs are currently installed in the router, use the show chassis hardware command from the top level of the CLI. Channelized PICs with QPP are listed in the output with "QPP" in the description. For more information, see Channelized Interfaces Overview.