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Configuring Channelized PIC Operation

By default, SONET PICs (interfaces with names so-fpc/pic/port) operate in concatenated mode, a mode in which the bandwidth of the interface is in a single channel.

To configure a PIC to operate in channelized (multiplexed) mode, include the no-concatenate statement at the [edit chassis fpc slot-number pic pic-number] hierarchy level:



[edit chassis]
user@host# set fpc slot-number pic pic-number no-concatenate

[edit chassis]
user@host# show


fpc slot-number {



pic pic-number {

no-concatenate; 
}


}

On a TX Matrix platform, include the no-concatenate statement at the [edit chassis lcc number fpc slot-number pic pic-number] hierarchy level:



[edit chassis lcc number]
user@host# set fpc slot-number pic pic-number no-concatenate

[edit chassis lcc number]
user@host# show


fpc slot-number {



pic pic-number {

no-concatenate; 
}


}

When configuring and displaying information about interfaces that are operating in channelized mode, you must specify the channel number in the interface name (physical:channel); for example, so-2/2/0:0 and so-2/2/0:1. For more information about interface names, see the JUNOS Network Interfaces Configuration Guide. For information about the TX Matrix platform, see TX Matrix Platform and T640 Routing Node Configuration Guidelines.

Concatenated and Nonconcatenated Mode

On SONET OC48 interfaces that are configured for channelized (multiplexed) mode, the bytes e1-quiet and bytes f1 options in the sonet-options statement have no effect. The bytes f2, bytes z3, bytes z4, and path-trace options work correctly on channel 0. These bytes work in the transmit direction only on channels 1, 2, and 3.

The M160 four-port SONET/SDH OC12 PIC can run each of the OC12 links in concatenated mode only and requires a Type 2 M160 FPC. Similarly, the four-port SONET/SDH OC3 PIC cannot run in nonconcatenated mode on any platform.

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