- Planet WAN Router User's Manual

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Chapter 6 QOS
Quality of service (QOS) is use to improve the network efficiency. ERT-805 provides some different
QOS, which are CAR, Policy-based Routing, Weight fair queuing and class-map
6.1 CAR – Committed Access Rate
CAR (Committed Access Rate) is allows user to limit the output transmission rate on an interface. CAR
provides two qualities of service functions:
Ø Bandwidth management through rate limit
Ø Packet classification through IP precedence
The following example is shows how to configuration CAR:
rate-limit output [access-group] access-list no bps Normal bust number Maximum bust number
conform-action conform action exceed-action exceed action – configure CAR and distributed
policies.
output
Applies this CAR traffic policy to packets sent on this output
interface.
access-group
(Optional) Applies this CAR traffic policy to the specified access
list.
bps
Average rate, in bits per second (bps).
Normal burst bytes
Normal burst size, in bytes.
Maximun bust bytes
Excess burst size, in bytes.
conform-action
conform-action
• continue—Evaluates the other rate-limit
• drop—Drops the packet.
• transmit—Sends the packet.
exceed-action exceed-action
• continue—Evaluates the other rate-limit .
• drop—Drops the packet.
• transmit—Sends the packet.