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Partitions, OC Slices, Interface Types, and Time Slots


The partition number is the sublevel interface partition index and is correlated with the channel number. For channelized OC3 interfaces, you can configure up to three OC1 interfaces, so the partition number can be 1, 2, or 3. For channelized T3 interfaces (ct3), you can configure multiple interfaces at once by including a partition range, such as 1-3. This creates three T1 interfaces with channel numbers 1 through 3.


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

You configure the OC-slice range for SONET/SDH interfaces only. The OC-slice range is correlated with the bandwidth size required for the interface type you are configuring. For example, a channelized OC3 interface (coc3) can be divided into three OC1 interfaces, each containing one OC slice. Therefore the OC-slice value must be 1, 2, or 3.

The configurable interface types are dependent on the hierarchy level at which you include the interface-type and partition or no-partition statements. For example, when you include the no-partition statement at the [edit interfaces coc3-fpc/pic/port] hierarchy level, the only configurable interface type is so, because the no-partition statement signals that you are creating a clear-channel SONET/SDH interface. When you include the partition statement at the [edit interfaces coc1-fpc/pic/port] hierarchy level, the configurable interface types are ct1 or t1. If you want to create a T1 interface, include the t1 option. If you want to further channelize down to the NxDS0 level, include the ct1 option as an intermediate step before dividing the channelized T1 interface (ct1) into NxDS0 interfaces.

You configure time slots for fractional T1 interfaces and NxDS0 interfaces. You can configure ranges by using hyphens. You can configure discontinuous time slots by using commas. Do not include spaces.

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