host1(config-if)#pos framing sdh
host1(config-if)#mtu 1600
host1(config-if)#mru 1600
host1(config-if)#pos scramble-atm
Configuring Channelized OCx/STMx Line Interfaces
The cOCx/STMx modules are generally used for circuit aggregration on the router.
These line modules support the following controllers over OC3/STM1 or OC12/STM4,
depending on the I/O module used with the line module:
â– Fractional T1/E1 over SONET/SDH virtual tributaries or T3
â– Unframed E1
â– Unchannelized DS3
Figure 8 on page 15 shows the configuration parameters for a sample T1 over DS3
interface configuration.
Figure 8: Parameters for T1 over DS3 Interface Configuration
The following sample command sequence configures T1 over DS3 on a channelized
SONET interface as described in Figure 8 on page 15. See JUNOSe Physical Layer
Configuration Guide, for details.
host1(config)#controller sonet 3/0
host1(config-controller)#path 12 oc1 4/1
host1(config-controller)#path 12 ds3 1 channelized
host1(config-controller)#path 12 ds3 1 t1 4
host1(config-controller)#path 12 ds3 1 t1 4/2 timeslots 1, 3-8, 10-12
host1(config)#interface serial 3/0:12/1/4/2
Configuring Physical Layer Interfaces â– 15
Chapter 1: Planning Your Network