Digisol DG-FS4528P, Руководство по управлению

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C
HAPTER
16 | Quality of Service
Creating QoS Policies
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The class of service can be assigned to matching packets. In addition, the
flow rate of inbound traffic can be monitored and the response to non-
conforming traffic specified.
To configure a Policy Map, follow these steps:
Create a Class Map as described on page 375 .
Open the Policy Map page, and click Add Policy.
When the Policy Configuration page opens, fill in the “Policy Name”
field, and click Add.
When the Policy Rule Settings page opens, select a class name from
the scroll-down list (Class Name field). Configure a policy for traffic
that matches criteria defined in this class by setting the quality of
service that an IP packet will receive (in the Action field), defining
the maximum throughput and burst rate (in the Meter field), and
the action that results from a policy violation (in the Exceed field).
Then finally click Add to register the new policy.
A policy map can contain multiple class statements that can be applied
to the same interface with the Service Policy Settings ( page 382 ). You
can configure up to 64 policers (i.e., meters or class maps) for each of
the following access list types: MAC ACL, IP ACL or IPv6 ACL. Also, note
that the maximum number of classes that can be applied to a policy
map is 200.
Policing is based on a token bucket, where bucket depth (i.e., the
maximum burst before the bucket overflows) is specified by the “Burst”
field, and the average rate at which tokens are removed from the
bucket is specified by the “Rate” option.
After using the policy map to define packet classification, service
tagging, and bandwidth policing, it must be assigned to a specific
interface by a service policy ( page 382 ) to take effect.
P
ARAMETERS
These parameters are displayed:
Policy Map
Modify Name and Description – Configures the name and a brief
description of a policy map. (Range: 1-16 characters for the name;
1-64 characters for the description)
Edit Classes – Opens the “Policy Rule Settings” page for the selected
class entry. Modify the criteria used to service ingress traffic on this
page.
Add Policy – Opens the “Policy Configuration” page. Enter a policy
name and description on this page, and click Add to open the “Policy
Rule Settings” page. Enter the criteria used to service ingress traffic on
this page.