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Configuring QoS
Policy Applications
OmniSwitch AOS Release 6 Network Configuration Guide
September 2009
page 40-57
Policy Applications
Policies are used to classify incoming flows and treat the relevant outgoing flows. There are many ways to 
classify the traffic and many ways to apply QoS parameters to the traffic.
Classifying traffic may be as simple as identifying a Layer 2 or Layer 3 address of an incoming flow. 
Treating the traffic might involve prioritizing the traffic or rewriting an IP address. How the traffic is 
treated (the action in the policy rule) typically defines the type of policy:
This section describes how to configure basic QoS policies and 802.1p/ToS/DSCP marking and mapping 
policies. Policies used for Layer 2 and Layer 3/4 filters, are commonly referred to as Access Control Lists 
(ACLs). Filtering is discussed in 
Policies may also be used for prioritizing traffic in dynamic link aggregation groups. For more informa-
tion about dynamic link aggregates, see 
Type of Policy
Description
Action Parameters Used
Basic QoS policies
Prioritizes particular flows, and/
or shapes the bandwidth for the 
flow
maximum bandwidth
priority
Redirection policies
Redirects flows to a specific port 
or link aggregate ID.
redirect port
redirect linkagg
Policy Based Mirroring
Mirrors ingress and egress pack-
ets to a specific port.
ingress mirror
egress mirror
ingress egress mirror
ICMP policies
Filters, prioritizes, and/or rate 
limits ICMP traffic
disposition
priority
maximum bandwidth
802.1p, ToS, and DSCP tagging or 
mapping policies
Sets or resets the egress 802.1p, 
ToS, or DSCP values
802.1p
tos
dscp
map group
Policy Based Routing (PBR)
Redirects routed traffic. Note 
that PBR is not supported on the 
OmniSwitch 6800.
permanent ip
Access Control Lists (ACLs)
Groups of policies rules used for 
filtering traffic (allow/deny)
disposition