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speed (SONET/SDH)



Hierarchy Level

Release Information

Statement introduced in Junos OS Release 8.3.


Configure the interface speed. This statement applies to SONET/SDH interfaces on next-generation SONET/SDH Type 1 and Type 2 PICs with SFP. Available speeds depend on whether the PIC is in concatenated mode or nonconcatenated mode. Include the channel in the interface name when configuring nonconcatenated interfaces.


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


oc3 | oc12 | oc48—Speed when the PIC is in concatenated mode. For example, you can configure each port of a 4-port OC12 PIC to have a speed of oc3.

You can configure port 0 of a 4-port OC12 PIC to have a speed of oc12.

oc3 | oc12—Speed when the PIC is in nonconcatenated mode.

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.