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Configure Channelized OC-12 Interfaces

The JUNOS software supports M-series original Channelized OC-12 interfaces and M-series Channelized OC-12 Q Performance Processor (QPP) interfaces.

Channelized QPP interfaces allow arbitrary and dynamic channelization of serial links, allowing greater flexibility than the original channelized interfaces. For example, each Channelized OC-12 PIC with QPP is capable of supporting a full OC-12 interface or can be channelized into four OC-3 data channels, 12 T3 data channels, 336 T1 data channels, or 336 DS-0 data channels, or any combination of T1, T3, and NxDS-0, up to 336 channels. By comparison, the original Channelized OC-12 PIC supports only 12 T3 channels. Figure 15 and Figure 12 illustrate the difference in flexibility between a Channelized OC-12 PIC with QPP and an original Channelized OC-12 PIC.


Figure 11: Sample Channelization of OC-12 PIC with QPP

In Figure 15, a Channelized OC-12 PIC with QPP is partitioned into the following OC slices:

  1. An OC-3 interface.
  2. Another OC-3 interface.
  3. A Channelized OC-1 partitioned into T1 interfaces.
  4. A Channelized OC-1 converted into a T3 interface.
  5. A Channelized OC-1 partitioned into T1 interfaces and Channelized T1s, which are partitioned into NxDS-0 interfaces.
  6. A Channelized OC-1 converted into a Channelized T3, which is partitioned into T1 interfaces.
  7. A Channelized OC-1 converted into a Channelized T3, which is partitioned into into T1 interfaces and a Channelized T1, which is partitioned into NxDS-0 interfaces.
  8. A Channelized OC-1 partitioned into Channelized T1s, which are partitioned into NxDS-0 interfaces.

This is one of thousands of ways to configure a Channelized OC-12 PIC with QPP. To configure the interfaces shown in Figure 15, see Example: Configure Channelized OC-12 QPP Interfaces.


Figure 12: Sample Channelization of OC-12 PIC

Figure 2 shows five T3 channels configured on the original Channelized OC-12 PIC. You can configure seven additional T3 channels. For more information about configuring original Channelized OC-12 PICs, see Configure Channelized OC-12 Interfaces. To create the interfaces shown in Figure 12, see Configure Aggregated SONET/SDH Interfaces.

This chapter is organized as follows:

For examples of Channelized OC-12 interface configuration, see the following sections:

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