Basic Commands; Traffic Prioritization Example - OmniSwitch os6900 Network Configuration Manual

Configuring QoS
Note that some condition parameters can be used in combination only under particular circumstances;
also, there are restrictions on condition/action parameter combinations. See
page 25-31 and "Policy Actions" on page

Basic Commands

The following policy action commands are used for traffic prioritization or policing (rate limiting):
policy action priority
policy action maximum bandwidth
policy action maximum depth
To set up traffic prioritization and/or bandwidth policing, follow the steps in the next section. For more
information about command syntax and options, see the OmniSwitch CLI Reference Guide.
Note that QoS ports can also be configured for bandwidth shaping through the qos port maximum
ingress-bandwidth and qos port maximum egress-bandwidth commands.

Traffic Prioritization Example

In this example, IP traffic is routed from the 10.10.4.0 network through the OmniSwitch.
Network 1
10.10.4.0
To create a policy rule to prioritize the traffic from Network 1, first create a condition for the traffic that
you want to prioritize. In this example, the condition is called ip_traffic. Then create an action to priori-
tize the traffic as highest priority. In this example, the action is called high. Combine the condition and the
action into a policy rule called rule1.
-> policy condition ip_traffic source ip 10.10.4.0 mask 255.255.255.0
-> policy action high priority 7
-> policy rule rule1 condition ip_traffic action high
The rule is not active on the switch until the qos apply command is entered on the command line. When
the rule is activated, any flows coming into the switch from 10.10.4.0 is given the highest priority.
Bandwidth Policing Example
In this example, a maximum bandwidth rate is effected on flows from a specific source IP address.
First, create a condition for the traffic. In this example, the condition is called ip_traffic2. A policy action
(flowShape) is then created to enforce a maximum bandwidth requirement for the flow.
-> policy condition ip_traffic2 source ip 10.10.5.3
-> policy action flowShape maximum bandwidth 10m
-> policy action burst maximum depth 1m
-> policy rule rule2 condition traffic2 action flowShape action burst
OmniSwitch AOS Release 7 Network Configuration Guide
25-32.
OmniSwitch
priority applied
June 2013
Policy Applications
"Policy Conditions" on
Any
Network
page 25-75