Default Forwarding Class Queue Assignments

J-series routers have eight queues built into the hardware. If a classifier does not assign a packet to any other queue (for example, for other than well-known DSCPs that have not been added to the classifier), the packet is assigned by default to the class associated with queue 0.

Table 98 shows the four default forwarding classes and queues that Juniper Networks classifiers assign to packets based on the DSCP values in arriving packet headers.

Table 98: Default Forwarding Class Queue Assignments

Because the Services Router supports up to eight queues, you can configure two queues for each forwarding class, one with high loss priority and one with low loss priority.