Chapter 19: QoS Configuration Guide
292 SmartSwitch Router User Reference Manual
prioritization, traffic rate limiting is a mechanism to control ba ndwidth usage of incoming
traffic on a per flo w basis.
A traffic profile is used to define the traffic characteristics before an upper limit is assigned.
The traffic profile is created using one or more ACLs which c an utilize any combination of
the parameters supported in the IP ACL. A rate limiting profile can then be defined by
using the ACL and traffic rate limitations. A single r ate limiting profile can have multiple
ACLs to define different traffic profiles and traffic rate limitations. When there are
multiple traffic profiles, a sequence number is used to ide ntify the order in which the
profiles are applied. You can define the action taken on the traffic that exceeds the upper
limit: either drop the packets or reset the priority of the traffic. The rate limiting profile is
then applied to a logical IP interface.
To define a rate limit profile and apply the profile to an interface, enter the following
commands in Configure mode:
Note: You cannot use non-IP ACLs for rate limit profiles.
Example Configuration
The following is an example of configuring rate limiting on the SSR.
Define a rate limit profile. rate-limit <name> input acl <acl list> rate
<rate-limit> exceed-action drop-pa ckets|set-
priority-low|set-prior ity-medium|set-
priority-high [sequence <num ber>]
Apply a rate limit profile to an
interface.
rate-limit <name> apply interface
<interface>|all
ipclient1
ipclient2
Backbone
et.1.1
et.1.2
3.3.3.3/8
1.1.1.1/8
et.1.8
2.2.2.2/8
Router