}
}
shared-buffer {
maximum {
20;
multicast {
10;
}
}
}
}
The port gets 50 microseconds worth of reserved buffer. For a 10 Gigabyte port without
any shaper, this translates to 62500 Bytes.
In the above sample configuration, the total buffer size allotted for the queue is 80
percent.
Under buffer-partition, the multicast packets get 30 percent of the total buffer-size,
which translates to about 24 percent of port-buffer. The unicast packets get the remaining
70 percent of 80 percent of the port buffer, which translates to 56 percent of port buffer.
Under shared-buffer, the multicast packets get up to 10 percent of the total shared buffer.
Unicast packets use up to 20 percent of the total shared buffer.
Related
Documentation
Understanding Schedulers Overview on page 874•
CoS for PPP and MLPPP Interfaces on ACX Series Routers
Junos CoS enables you to divide traffic into classes and offer various levels of throughput
and packet loss when congestion occurs. This functionality allows packet loss to happen
according to rules that you configure. The Junos CoS features provide a set of mechanisms
that you can use to provide differentiated services when best-effort traffic delivery is
insufficient.
CoS functionalities are supported on PPP and MLPPP interfaces. Up to four forwarding
classes and four queues are supported per logical interface for PPP and MLPPP packets.
NOTE: CoS for PPP and MLPPP Interfaces is not applicable on ACX5048
and ACX5096 routers.
The Junos OS CoS features provide a set of mechanisms that you can use to provide
differentiated services when best-effort traffic delivery is insufficient. In designing CoS
applications, you must give careful consideration to your service needs, and you must
thoroughly plan and design your CoS configuration to ensure consistency across all
routing devices in a CoS domain. You must also consider all the routing devices and other
networking equipment in the CoS domain to ensure interoperability among all equipment.
877Copyright © 2017, Juniper Networks, Inc.
Chapter 27: Configuring Class of Service
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