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Configuring the Junos OS to Support Channelized STM1 Interface Virtual Tributary Mapping
By default, virtual tributary mapping uses KLM mode. You can configure virtual tributary mapping to use KLM or ITU-T mode. On the original Channelized STM1 PIC, to configure virtual tributary mapping, include the vtmapping statement at the [edit chassis fpc slot-number pic pic-number] hierarchy level:
[edit chassis fpc slot-number pic pic-number]vtmapping (klm | itu-t);
For the Channelized STM1 PIC with IQ, you can configure virtual tributary mapping by including the vtmapping statement at the [edit interfaces cau4 fpc slot-number pic pic-number sonet-options] hierarchy level.