Configuring an NxDS0 IQ Interface

By default, all the time slots on a channelized STM1 interface are used. To configure an NxDS0 IQ interface on a Channelized STM1 IQ or IQE PIC, you must perform the following tasks:

1. Include the no-partition and interface-type statements at the [edit interfaces cstm1-fpc/pic/port] hierarchy level, specifying the cau4 interface type. This converts the channelized STM1 interface into a channelized AU-4 interface. The resulting interface name is cau4-fpc/pic/port:

   [edit interfaces cstm1-fpc/pic/port]

   no-partition interface-type cau4;

2. Partition the channelized AU-4 interface into E1 interfaces by including the partition and interface-type statements at the [edit interfaces cau4-fpc/pic/port] hierarchy level, specifying the ce1 interface type. This configuration creates interface ce1-fpc/pic/port:channel. The partition number is the sublevel interface partition index and is correlated with the channel number. For channelized E1 interfaces, the partition number can be from 1 through 63. The interface type is the channelized interface type or clear channel you are creating. For channelized AU-4 interfaces, type can be ce1 or e1:

   [edit interfaces cau4-fpc/pic/port]

   partition partition-number interface-type ce1;

3. Configure the number of time slots allocated to the NxDS0 IQ interface by including the partition, timeslots, and interface-type statements at the [edit interfaces e1-fpc/pic/port:channel] hierarchy level, specifying the ds interface type. For channelized E1 IQ interfaces, the partition number range is from 1 through 31. For E1 IQ interfaces (e1-fpc/pic/port), the time-slot range is from 2 through 31. For channelized E1 IQ interfaces (ce1-fpc/pic/port), the time-slot range is from 1 through 31. You can designate any combination of time slots. To configure ranges, use hyphens. To configure discontinuous time slots, use commas. Do not include spaces:

   [edit interfaces ce1-fpc/pic/port:channel]

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

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

Note: For channelized STM1 interfaces, channel numbering begins with 0 (:0). For channelized STM1 IQ and IQE interfaces, channel numbering begins with 1 (:1).

For more information about E1 time slots, see Configuring Fractional E1 Time Slots.

Example: Configuring an NxDS0 IQ Interface

Configure an NxDS0 interface that uses time slots 1 through 10. This configuration creates the ds-0/0/0:1:1 interface.

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

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