Configuring Per-Unit Schedulers for Channelized Interfaces
You can configure per-unit scheduling on T1 and DS0 physical
interfaces configured on channelized DS3 and STM1 IQ PICs. To enable
per-unit scheduling, configure the per-unit-scheduler statements
at the [edit interfaces interface-name] hierarchy level.
When per-unit scheduling is enabled on the channelized PICs,
you can associate a scheduler map with the physical interface. For
more information about configuring scheduler maps, see Configuring Scheduler Maps.
 | Note:
If you configure the per-unit-scheduler statement
on the physical interface of a 4-port channelized OC-12 IQ PIC and
configure 975 logical interfaces or data link connection identifiers
(DLCIs), some of the logical interfaces or DLCIs will drop all packets
intermittently. |
The following example configures per-unit scheduling
on a channelized DS3 PIC and an STM1 IQ PIC.
[edit interfaces]ct3-5/3/1 {partition 1 interface-type t1;}t1-5/3/1:1 {per-unit-scheduler; # This enables per-unit schedulingencapsulation frame-relay;unit 0 {dlci 1;family inet {address 10.0.0.2/32;}}}ct3-5/3/0 {partition 1 interface-type ct1;}ct1-5/3/0:1 {partition 1 timeslots 1 interface-type ds;}ds-5/3/0:1:1 {per-unit-scheduler; # This enables per-unit schedulingencapsulation frame-relay;unit 0 {dlci 1;family inet {address 10.0.0.1/32;}}}cau4-3/0/0 {partition 1 interface-type ce1;}cstm1-3/0/0 {no-partition 1 interface-type cau4;}ce1-3/0/0:1 {partition 1 timeslots 1 interface-type ds;}ds-3/0/0:1:1 {per-unit-scheduler; # This enables per-unit schedulingencapsulation frame-relay;unit 0 {dlci 1;family inet {address 10.1.1.1/32;}}}[edit class-of-service]classifiers {dscp all-traffic-dscp {forwarding-class assured-forwarding {loss-priority low code-points 001010;}forwarding-class expedited-forwarding {loss-priority low code-points 101110;}forwarding-class best-effort {loss-priority low code-points 101010;}forwarding-class network-control {loss-priority low code-points 000110;}}}forwarding-classes {queue 0 best-effort;queue 1 assured-forwarding;queue 2 expedited-forwarding;queue 3 network-control;}interfaces {ds-3/0/0:1:1 {unit 0 {scheduler-map schedule-mlppp;}}ds-5/3/0:1:1 {unit 0 {scheduler-map schedule-mlppp;}}t1-5/3/1:1 {unit 0 {scheduler-map schedule-mlppp;}}}scheduler-maps {schedule-mlppp {forwarding-class expedited-forwarding scheduler expedited-forwarding;forwarding-class assured-forwarding scheduler assured-forwarding;forwarding-class best-effort scheduler best-effort;forwarding-class network-control scheduler network-control;}}schedulers {best-effort {transmit-rate percent 2;buffer-size percent 5;priority low;}assured-forwarding {transmit-rate percent 7;buffer-size percent 30;priority low;}expedited-forwarding {transmit-rate percent 90 exact;buffer-size percent 60;priority high;}network-control {transmit-rate percent 1;buffer-size percent 5;priority strict-high;}}
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Published: 2010-07-16
