Configuring NxDS0 IQ Interfaces

To configure NxDS0 interfaces on a Channelized OC12 IQ or IQE PIC, you perform the following tasks:

1. Partition the channelized OC12 interface into channelized OC1 interfaces by including the partition, oc-slice, and interface-type statements at the [edit interfaces coc12-fpc/pic/port] hierarchy level, specifying the coc1 interface type:

   [edit interfaces coc12-fpc/pic/port]

   partition partition-number oc-slice oc-slice-range interface-type coc1;

2. If your network equipment uses VT mapping, partition the channelized OC1 interface into channelized T1 interfaces by including the partition and interface-type statements at the [edit interfaces coc1-fpc/pic/port] hierarchy level, specifying the ct1 interface type:

   [edit interfaces coc1-fpc/pic/port]

   partition partition-number interface-type ct1;

   Note: Class-of-service (CoS) rules cannot be applied to an individual channel configured on channelized IQ interfaces. You can only apply CoS rules to the aggregate bit streams.

   If your network equipment uses M13 or C-bit parity, convert the channelized OC1 interface into a channelized T3 interface by including the no-partition and interface-type statements at the [edit interfaces coc1-fpc/pic/port] hierarchy level, specifying the ct3 interface type:

   [edit interfaces coc1-fpc/pic/port]

   no-partition partition-number interface-type ct3;

   Note: Because the no-partition statement is included, this configuration task does not create another level of channelization, as denoted by the number of colons in the resulting interface.

   Note: Class-of-service (CoS) rules cannot be applied to an individual channel configured on channelized IQ interfaces. You can only apply CoS rules to the aggregate bit streams.

3. You then partition the channelized T3 interface into channelized T1 interfaces by including the partition and interface-type statements at the [edit interfaces ct3-fpc/pic/port] hierarchy level, specifying the ct1 interface type:

   [edit interfaces ct3-fpc/pic/port]

   partition partition-number interface-type ct1;

   Note: Class-of-service (CoS) rules cannot be applied to an individual channel configured on channelized IQ interfaces. You can only apply CoS rules to the aggregate bit streams.

4. Configure channelized NxDS0 IQ interfaces on the channelized T1 IQ interface by including the partition, timeslots, and interface-type statements at the [edit interfaces ct1-fpc/pic/port] hierarchy level, specifying the ds interface type:

   [edit interfaces ct1-fpc/pic/port:channel:channel]

   partition partition-number timeslots time-slot-range interface-type ds;

Figure 38 shows VT-mapped and M13 or C-bit parity-mapped configurations of NxDS0 IQ interfaces.

Figure 38: Sample Channelization of OC12 IQ or IQE PIC

Example: Configuring NxDS0 IQ Interfaces

Configure the following two NxDS0 interfaces with 10 time slots and 4 time slots, respectively:

VT-Mapped Configuration

M13 or C-bit Parity-Mapped Configuration

For a full configuration example, see the JUNOS Feature Guide.

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