Rate-Limiting - HP ProCurve 6400cl Series Management And Configuration Manual

C a u t i o n

Rate-Limiting

Feature
rate-limit < limit-% >
show rate-limit [ port-list ]
Introduction
Rate-Limiting provides a method for limiting the amount of bandwidth a user
or device may utilize inbound on a switch port. This effectively sets an inbound
usage level on a given port, and is a tool for enforcing maximum service level
commitments granted to network users. This feature operates on a per-port
level and is not configurable on port trunks. Note that rate-limiting is designed
to be applied at the network edge to limit inbound traffic from non-critical
users or to enforce service agreements such as those offered by Internet
Service Providers (ISPs) to provide only the bandwidth for which a customer
has paid.
Rate-Limiting is intended for use on edge ports in a network. It is not
recommended for use on links to other switches, routers, or servers
within a network, or for use in the network core. Doing so can
interfere with applications the network requires to function properly.
Under network stress conditions, a port may allow occasional bursts of
inbound traffic forwarding that exceed the port's configured rate. For this
reason, rate-limiting should not be employed as a security feature.
Rate-Limiting Operation
Rate-Limiting operates on a per-port basis to allow only the specified percent-
age of the port's bandwidth to be used for inbound traffic. For example, if a
100 Mbps port negotiates a link at 100 Mbps and is rate-limit configured at 50%,
then the inbound traffic flow through that port is limited to no more than 50
Mbps. Similarly, if the same port negotiates a 10 Mbps link, then it allows no
more than 5 Mbps of inbound traffic.
Default Menu
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Port Traffic Controls
Rate-Limiting
CLI Web
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