Specifications

Table Of Contents
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Release Notes for Cisco 7000 Family for Cisco IOS Release 12.1 T
78-10811-05
New and Changed Information
row is created successfully, the cciStatus is active(1). When creating a new row, set the cciDescr object
along with the cciStatus in a single snmp set pdu command. If the row is already active, only the
cciDescr object can be modified. The other option is to delete the row first by setting the cciStatus to
destroy(6), and then recreate the row with a new value for cciDescr. When creating a new row, the
ifIndex is validated first. If the ifIndex value is not valid, the row is not created and an error code is
returned. Similarly, if, when an interface is deleted, there was a corresponding row in this table, that
row is deleted automatically.
After an identifying description is created for an interface by a user, the description (the cciDescr
object) is sent along with the other varbinds as part of linkup and linkdown trap notifications.
For further details, see the CISCO-CIRCUIT-INTERFACE-MIB.my file, available from the
Cisco.com MIB site at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml
Class-Based Marking
Platforms: Cisco 7200 series routers
The Class-Based Packet Marking feature provides users with a user-friendly command-line interface
for efficient packet marking by which users can differentiate packets by designating them different
identifying values. The Class-Based Packet Marking feature allows users to perform the following
tasks:
Mark packets by setting the IP precedence bits or the IP differentiated services code point (DSCP)
in the IP Type of Service (ToS) byte.
Associate a local QoS group value with a packet.
After setting the IP precedence bits or the IP DSCP, a user can classify a packet based on the IP
precedence bit or IP DSCP value. These classifications are then used to apply user-defined
differentiated QoS services to the packet.
Associating a packet with a local QoS group allows users to associate a group ID with a packet. The
group ID can be used to classify packets into QoS groups based on prefix, autonomous system, and
community string.
A user can set up to 8 IP precedence markings, 64 IP DSCP markings, and 100 QoS group markings.
Class-Based Shaping
Platforms: Cisco 7100 series, Cisco 7200 series, and Cisco 7500 series routers
Class-based traffic shaping allows you to control the traffic that leaves an interface in order to match its
transmission to the speed of the remote, target interface and to ensure that the traffic conforms to
policies contracted for it. Traffic adhering to a particular profile can be shaped to meet downstream
requirements, thereby eliminating bottlenecks in topologies with data-rate mismatches.
Using the Class-Based Shaping feature, you can do the following:
Configure Generic Traffic Shaping (GTS) on a traffic class
Specify average-rate or peak-rate traffic shaping
Configure class-based weighted fair queueing (CBWFQ) inside GTS
Enable class-based shaping on any interface that supports GTS.