Interfaces Supporting Marking - Cisco 10000 Series Configuration Manual

Interfaces Supporting Marking

Discard-Class-Based Marking Restrictions
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CoS-Based Marking Restrictions
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Tunnel Header Marking Restrictions
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Interfaces Supporting Marking
The following describes interface support for marking using the set commands:
Interfaces Supporting the set Command
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The router supports the set command on inbound and outbound interfaces.
Note
Cisco 10000 Series Router Quality of Service Configuration Guide
7-20
The router supports the set discard-class command only on the PRE2.
When you use the input per-hop behavior (PHB) marking to classify packets on the output interface,
you must configure the set discard-class command in the input policy.
The router supports CoS-based QoS only on Ethernet interfaces or PPPoE sessions associated with
Ethernet interfaces.
The router supports matching and marking for physical Ethernet interfaces and subinterfaces. The
router supports CoS-based QoS for virtual access interfaces (VAIs) associated with PPPoE
interfaces and it supports classification on the input policy and marking on the output policy.
If the outbound interface is not a tunnel, a policy map with tunnel header marking has no effect on
the packet headers.
The router accepts only input service policies for tunnel header marking. You must apply a policy
map with tunnel header marking to inbound interfaces. If you attempt to apply a service policy with
tunnel header marking to an outbound interface, an error message displays.
You may use the [no] set ip [dscp | precedence] tunnel value command in conjunction with other
input set actions. However, if you specify tunnel header marking as a policer action, using the
set-dscp-tunnel-transmit or set-prec-tunnel-transmit command, then you cannot specify any other
policer action. The router only supports a single police action.
The marking statistics for tunnel header marking are included in the statistical information for the
class map.
Physical
Multilink PPP and multilink Frame Relay
ATM unspecified bit rate (UBR) PVCs and point-to-point subinterfaces
ATM variable bit rate (VBR) and constant bit rate (CBR) PVCs, and point-to-point subinterfaces
Label-controlled ATM (LC-ATM) subinterfaces
Frame Relay permanent virtual circuits (PVCs), point-to-point subinterfaces, and map classes
Ethernet VLANs
IP tunnel
Virtual-access (See the "VAI QoS Inheritance" section on page
Chapter 7 Marking Traffic
4-24.)
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