Dynamically Changing VC Weight and Watermark Values
Default High and Low Watermark Values
The high and low watermark settings define the depth of the PVC interface queue on the line card.
Table 15-3 on page 15-25
(VBR) VCs, based on the ATM VC rate.
Table 15-4 on page 15-25
(UBR) VCs, based on the ATM VC rate.
For more information about high and low watermarks, see the
Values" section on page 15-26
section on page
High and Low Watermark Threshold Behavior
The behavior of the high and low watermark thresholds depends on the queuing mode configured, either
atm pxf queuing or no atm pxf queuing mode.
describes threshold behavior for each of these queuing modes. For more information, see the
Watermark and Low Watermark Default Values" section on page
Restrictions and Limitations for VC Weight and Watermarks
•
•
Configuring Dynamic VC Weights and Watermarks
To configure dynamic VC weights and watermarks on a PVC, perform the following required
configuration tasks:
•
•
Cisco 10000 Series Router Quality of Service Configuration Guide
17-20
lists the default high and low watermark values for ATM variable bit rate
lists the default high and low watermark values for ATM unspecified bit rate
15-27.
You must configure the AV pairs for both the high and low watermarks. Configuring only one of the
AV pairs results in the watermark not being configured.
The router does not support RADIUS Pull for automatically provisioned VCs and virtual path (VP)
tunnels.
Configuring the Router for Dynamic VC Weights and Watermarks, page 17-21
Setting Up RADIUS for Dynamic VC Weights and Watermarks, page 17-22
and the
"Modifying the VC Weight and the VP Shaping Parameters"
Chapter 15, "Oversubscribing Physical and Virtual Links"
Chapter 17
Configuring Dynamic Subscriber Services
"Guidelines for Changing Watermark
15-25.
"High
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