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SONET/SDH Interface Speed Overview

 

You can configure the interface speed. The speed you select is dependent upon whether the PIC is in concatenated or nonconcatenated mode. Available speeds depend on whether the PIC is in concatenated mode or nonconcatenated mode.

  • Concatenated mode—Here, the bandwidth of the interface is in a single channel. You can select the oc3 | oc12 | oc48 option when the PIC is in concatenated mode.

  • Nonconcatenated mode—Here, the PIC operates in channelized (multiplexed) mode. You can select the oc3 | oc12 option when the PIC is in nonconcatenated mode.

You can configure the speed of SONET/SDH interfaces on next-generation SONET/SDH Type 1 and Type 2 PICs with SFP.

By default, SONET/SDH PICs operate in concatenated mode.

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

Note

On SONET/SDH OC3/STM1 (Multi-Rate) MIC with SFP, Channelized SONET/SDH OC3/STM1 (Multi-Rate) MIC with SFP, and SONET/SDH OC3/STM1 (Multi-Rate) (MIC-3D-4OC3OC12-1OC48,MIC-3D-8OC3OC12-4OC48) MICs with SFP you cannot set the interface speed at the [edit interfaces] hierarchy level. To enable the speed on these MICs, you need to set the port speed at the [edit chassis fpc slot-number pic pic-number port port-number] hierarchy level.

For more information about using the non-concatenate statement, see the Junos OS Administration Library.

Table 1 shows the mode combinations for the next-generation SONET/SDH Type 1 PICs with SFP.

Table 1: Type 1 PIC Mode Combinations

PIC

Mode

Speed Configuration

Default Mode

2-port OC3

2xOC3 concatenated

fpc/pic/0 speed oc3

Concatenated

4-port OC3

1xOC12 concatenated

fpc/pic/0 speed oc12

 

 

1xOC12 nonconcatenated

fpc/pic/0:0 speed oc3

Nonconcatenated

 

4xOC3 concatenated

fpc/pic/port speed oc3

Concatenated

1-port OC12

1xOC12 concatenated

fpc/pic/0 speed oc12

Concatenated

1xOC12 nonconcatenated

fpc/pic/0:0 speed oc3

Nonconcatenated

1xOC3 concatenated

fpc/pic/0 speed oc3

 

Table 2 shows the mode combinations for the next-generation SONET/SDH Type 2 PICs with SFP.

Table 2: Type 2 PIC Mode Combinations

PIC

Mode

Speed Configuration

Default Mode

1-port OC48

1xOC48 concatenated

fpc/pic/0 speed oc48

Concatenated

1xOC48 nonconcatenated

fpc/pic/0:0 speed oc12

Nonconcatenated

1xOC12 concatenated

fpc/pic/0 speed oc12

 

1xOC12 nonconcatenated

fpc/pic/0 0 speed oc3

 

1xOC3 concatenated

fpc/pic/0 speed oc3

 

4-port OC12

1xOC48 concatenated

fpc/pic/0 speed oc48

 

1xOC48 nonconcatenated

fpc/pic/0:0 speed

Nonconcatenated

1xOC12 nonconcatenated

fpc/pic/0 speed oc3

 

4xOC12 concatenated

fpc/pic/port speed oc3|oc12

Concatenated

4-port OC3

1xOC12 concatenated

fpc/pic/0 speed oc12

 

 

1xOC12 nonconcatenated

fpc/pic/0:0 speed oc3

Nonconcatenated

 

4xOC3 concatenated

fpc/pic/port speed oc3

Concatenated