Configuring And Applying Bandwidth-Remaining Ratios To Subinterfaces - Cisco 10000 Series Configuration Manual
Quality of service configuration guide
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Distribution of Remaining Bandwidth Using Ratio
Configuring and Applying Bandwidth-Remaining Ratios to Subinterfaces
To configure and apply bandwidth-remaining ratios to subinterfaces, enter the following commands
beginning in global configuration mode:
You can apply bandwidth-remaining ratios to outbound subinterfaces only.
Note
Command or Action
Step 1
policy-map child-policy-name
Step 2
class class-map-name
Step 3
bandwidth bandwidth-kbps
Step 4
exit
Step 5
exit
Step 6
policy-map parent-policy-name
Step 7
class class-default
Step 8
bandwidth remaining ratio ratio
Cisco 10000 Series Router Quality of Service Configuration Guide
5-16
Chapter 5
Purpose
Creates or modifies a child policy map. Enters policy-map
configuration mode.
child-policy-name is the name of the child policy map.
Configures the class map that you specify. Enters
policy-map class configuration mode.
class-map-name is the name of a previously created class
map.
Specifies the bandwidth, in kbps, to be allocated to this
traffic class.
bandwidth-kbps is the bandwidth in kilobits per second
(kbps).
Exits policy-map class configuration mode.
Exits policy-map configuration mode.
Creates or modifies a parent policy map. Enters policy-map
configuration mode.
parent-policy-name is the name of the parent policy map.
Configures the class-default class. Enters policy-map class
configuration mode.
The router interprets any features configured under
Note
the class-default class as aggregate features on the
subinterface.
Specifies the bandwidth-remaining ratio for the
subinterface.
ratio is the value used to determine the amount of unused
bandwidth to allocate to each queue on the subinterface
during periods of congestion. The scheduler allocates the
excess bandwidth relative to other subinterfaces. Valid
values are 1 to 1000. The default value is
platform-dependent.
The router distinguishes between interface types at the
subinterface level when using default bandwidth-remaining
ratios. On the Cisco 10000 series router the default ratio
value is 1 for VLAN subinterfaces and Frame Relay DLCIs.
For ATM subinterfaces, the router computes the default
based on the subinterface speed.
Distributing Bandwidth Between Queues
OL-7433-09
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