Specifications
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Cisco MWR 2941 Mobile Wireless Edge Router Software Configuration Guide, Release 12.2(33)MRB
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Chapter 4 Configuring the Cisco MWR 2941 Router Using the CLI
Configuration Sequence
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When applying or modifying any aspect of a service-policy on an MLPPP interface, you must
shut down and re-enable the interface.
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You can create a maximum of 8 classes within a policy-map that is applied to an MLPPP
interface. This number includes the default-class.
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You can have only 1 priority class within a policy-map applied to an MLPPP interface.
• The following limitations apply to GigabitEthernet interfaces:
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You can apply a maximum of 3 different service policies to Gigabit Ethernet interfaces. The
service policies must be of the same type: input, output, or control.
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You can only use the class-default class for HQoS parent service policies applied to egress
GigabitEthernet interfaces.
Statistics Limitations
• Input service policies on the GigabitEthernet interface support statistics based on class map and in
terms of packets. Statistics based on filters and statistics in terms of bytes or rates are not supported.
• Output MLPPP interfaces support QoS statistics.
• Output service policies on the GigabitEthernet interface do not support statistics.
Propagation Limitations
The Cisco MWR 2941 has the following limitations when propagating QoS values between interfaces:
• The following limitations apply when traffic ingresses through a GigabitEthernet interface and
egresses through a GigabitEthernet interface:
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When traffic is routed at layer 3, the switch maps the CoS bits to the QoS group value. The QoS
group is not propagated through the L3 network processor.
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When traffic is switched at layer 2, the QoS group is propagated through the switch.
• The following limitations apply when traffic ingresses through any other interface type
(host-generated, MLPPP, or HWIC) and egresses through the GigabitEthernet interface.
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The Precedence bit value is propagated to the CoS bit. The CoS bit value is mapped 1:1 to the
QoS group value.
See Sample QoS Configuration, page 4-93 for a sample QoS configuration that accounts for propagation
limitations on the Cisco MWR 2941.
Note For more information about QoS restrictions for individual interface cards, see the
documentation for Cisco Interface Cards.
Classification Limitations
Table 4-1 summarizes the values that you can use to classify traffic based on interface type. The values
are parameters that you can use with the match command.
Table 4-1 QoS Classification Limitations by Interface
GigabitEthernet HWIC-9ESW MLPPP HWIC-1GE-SFP HWIC-ADSL HWIC-SHDSL
Value Ingress Egress Ingress Egress Ingress Egress Ingress Egress Ingress Egress Ingress Egress
access-group