Cisco 10000 Series User Manual

7-20
Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 7 Marking Traffic
Interfaces Supporting Marking
Discard-Class-Based Marking Restrictions
• 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.
CoS-Based Marking Restrictions
• 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.
Tunnel Header Marking Restrictions
• 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.
Interfaces Supporting Marking
The following describes interface support for marking using the set commands:
Interfaces Supporting the set Command
• 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 4-24.)
Note The router supports the set command on inbound and outbound interfaces.

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English