Configuring The Maximum Available Bandwidth On The Interface; Configuring Matching Rules Of A Class - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
III. Pre-defined policies
The system pre-defines a policy, and specifies the pre-defined class for the policy and
specifies the pre-defined behavior for the class. The policy is named default, with the
default CBWFQ behavior.
The detailed rules of the default policy are as follows.
1) Pre-defined class ef, adopting pre-defined traffic behavior of ef.
2) Pre-defined classes af1 to af4, adopting pre-defined traffic behavior of af.
3) default-class, adopting pre-defined traffic behavior of be.

3.6.1 Configuring the Maximum Available Bandwidth on the Interface

The bandwidth discussed here refers to the maximum interface bandwidth used when
CBQ enqueues packets, rather than the actual bandwidth of the physical interface.
Perform the following configurations in interface view.
Table 3-19 Configure bandwidth of the interface
Configure the bandwidth of the interface.
Restore the default bandwidth.
The bandwidth argument indicates the available bandwidth of the interface. It is in kbps
(1 to 1000000). By default, this value is the actual interface baud rate or speed for a
physical interface, the total bandwidth of the channel set for a logical serial interface
that is formed by bundling in T1/E1 or MFR, or 64 kbps for a logical interface like virtual
template or VE.
The maximum available bandwidth of an interface is preferred to be smaller than the
real available bandwidth of the physical interfaces or the logical links. For a serial
interface, the value defaults to 64 kbps. To modify it, you can change the interface rate
using the baudrate command to 2.048 Mbps for example, and then set a new value,
115.2 kbps for example.

3.6.2 Configuring Matching Rules of a Class

Before you can define a class, you must first create its class name. Then you can
configure matching rules in this class view. The rules come in many types, and many of
them have restrictions on packet types, for example:
destination-mac, source-mac, and dot1p-cos are effective only for Ethernet
packets.
mpls-exp is effective in the inbound direction only for MPLS packets.
Operation
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3-18
Chapter 3 Congestion Management
Command
qos max-bandwidth bandwidth
undo qos max-bandwidth