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Network QoS Policies
Network QoS policies configured in Network mode are as follows:
1. Two types of network QoS policies can be defined, ip-interface and port. By default, when a
network QoS policy is created, it is an ip-interface type.
2. A network QoS policy of type ip-interface is created in the configure>qos>network net-
work-policy-id create context.
3. A network QoS policy of type port is created in the configure>qos>network network-pol-
icy-id network-policy-type port create context.
4. When a network QoS policy of type ip-interface is applied to an IP interface, it is used for
classification of MPLS packets based on LSP-EXP bits.
5. When a network QoS policy of type port is applied to a network and hybrid port, it is used
for classification of IP packets based on the DSCP or Dot1p bits.
Network QoS policies (ip-interface type) define ingress forwarding class meters and maps traffic
to those meters for IP interfaces. When a network QoS policy is created, it always has two meters
defined that cannot be deleted, one for all the unicast traffic and one for all the multipoint traffic.
These meters exist within the definition of the policy. The meters only get noticed in the hardware
when the policy is applied to an IP interface. A remarking policy can be specified to definethe
forwarding class to EXP bit marking, on the egress mode.
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The required elements to be defined in a network QoS policy are:
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Optional network QoS policy elements include:
7210 SAS-X and 7210 SAS-R6 OS Quality of Service Guide
Ingress
→ Defines EXP value mapping to forwarding classes.
→ Defines forwarding class to meter mapping.
Egress
→ Specifies a remark policy that defines the forwarding class to EXP value markings.
→ Remarking of QoS bits can be enabled or disabled.
A unique network QoS policy ID.
Specifies a remark policy to define the forwarding class to value mappings for each
forwarding class.
A default ingress forwarding class and in-profile/out-of-profile state.
At least one default unicast forwarding class meter. The parameters that can be configured
for a meter are discussed in
At least one multipoint forwarding class meter.
Meter Parameters on page
QoS Policies
29.
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