Technical Documentation

Scheduler Limitations for Channelized IQ Interfaces

You can configure logical interface scheduling on up to 16 channelized interfaces per channelized IQ PIC. For channelized IQ interfaces, the number of schedulers you can apply varies by channel level. Table 1 shows the number of schedulers you can apply at each channel level.

Table 1: Scheduler Limitations for Channelized IQ Interfaces

Channelized IQ Interfaces

Number of Schedulable DLCIs per Level

Channelized OC12 IQ interfaces

63 for OC3 and OC12 channels,
255 for T3 channels

Channelized OC3 IQ interfaces

63 for OC3 channels, 255 for T3 channels, 63 for T1 channels

Channelized DS3 IQ interfaces

255 for T3 channels

Channelized T1 IQ interfaces

63 for T1 channels

Channelized STM1 IQ interfaces

63 for STM1 channels, 63 for E1 channels

Channelized E1 IQ interfaces

63 for E1 channels

You can associate up to four forwarding classes per physical interface. Keep in mind that you can configure either a physical interface scheduler or a logical interface scheduler, but not both on the same interface simultaneously.

If you use a Gigabit Ethernet IQ interface, you can apply schedulers on up to 768 VLANs per PIC. For more information on class of service for VLANs on a Gigabit Ethernet IQ interface, see the JUNOS Network Interfaces Configuration Guide.


Published: 2010-04-15