Cos Functionalities For Ipv4 Over Mlppp Interfaces - Juniper ACX1000 Configuration Manual

CoS Functionalities for IPv4 Over MLPPP Interfaces

Copyright © 2017, Juniper Networks, Inc.
Guaranteed transmit rate (CIR)
Shaping rate (PIR)
Drop profile
Buffer size
[edit class-of-service]
schedulers scheduler_name {
transmit-rate (percent number | rate);
shaping-rate (percent number | rate);
buffer-size (percent | temporal)
drop-profile-map map_name;
}
Only 4 forwarding classes and only 4 queues per logical interface are supported. Also,
logical interface-based shaping is not supported.
Packet and byte counters for transmitted and dropped packets are available per queue.
These statistical details are displayed using the show interfaces queue command.
Aggregation to provide port-level statistics, if needed, is also supported by the system.
The logical interface-level statistics are correctly available for egress direction and are
displayed in the output, but the statistics pertaining to dropped packets are not
considered because of hardware limitations. The following configuration stanza defines
the rewrite rules:
[edit class-of-service]
rewrite-rules {
(inet-precedence | dscp | exp) rewrite-name
{
forwarding-class class-name loss-priority [low | high]
code-point value;
}
}
Each of the rewrite rules can be attached to an interface by using the following
configuration syntax:
All of the firewall features supported on ACX routers are applicable for PPP interfaces
for IPv4 packets.
For rewrite rules, IPv4 or inet precedence and EXP rules are supported. EXP rewrite
rules apply only to logical interfaces. You cannot apply EXP rewrite rules to physical
interfaces. There are no default EXP rewrite rules. If you want to rewrite the EXP value
in MPLS packets, you must configure EXP rewrite rules and apply them to logical
interfaces. If no rewrite rules are applied, all MPLS labels that are pushed have a value
of zero (0). The EXP value remains unchanged on MPLS labels that are swapped.
The following CoS capabilities are supported on MLPPP interfaces for IPv4 traffic:
Chapter 27: Configuring Class of Service
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