Nortel BCM 3.7, Manual

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804 Implementing Quality of Service (QoS)
N0008589 3.3
Configuring Policy Rules
Policy Rules are IP filters that are defined as part of a QoS Policy.
You can create an IP filter, which enables Business Communications Manager to classify traffic.
In turn, you can create an access control list from a series of defined filters to create an IP filter
group. The filter group then determines access to and denial of network services.
Creating an IP filter configuration
The maximum number of IP filter entries you can add to a QoS Policy is 31.
To create an IP filter configuration:
1 On the navigation tree, click the Services key and click the Policy Management key.
2
Click the QoS key and click the Rules heading.
The IP Filter Table screen appears.
3
On the Configuration menu, click Add IP Filter Entry .
The IP Filter Table dialog box opens.
4
Configure the IP Filter parameters according to the following table.
Table 247 QoS IP Filter parameters
Attribute Description
Name Enter the name of the IP Filter.
Destination
Address Enter a destination IP address in a valid dot format. This address is used to match the destination
IP address in the packet’s IP header.
If you want to ignore the Destination Address setting for this filter, leave this box blank. If you
specify an address in this box, you must also specify a subnet mask in the Destination Mask box.
Destination
Address Mask Enter a mask for the destination IP address in a valid dot format. This address is the destination
subnet mask. A subnet mask includes or excludes certain values. Subnetworks (or subnets)
extend the IP addressing scheme, allowing you to further divide a network into multiple segments.
If you specify a Destination Address, you must also specify a Destination Address Mask. Make
sure that the mask and address match with each other. For example, a bitwise AND of the mask
and address is equal to the address.
If you want to specify a range of addresses, use a subnet mask other than 255.255.255.255. For
example, an address/mask combination of 10.10.10.32/255.255.255.252 represents addresses
10.10.10.32-10.10.10.35.
Source Address Enter the source IP address in a valid dot format. This is the IP address to match against the
packet’s source IP address.
If you want to ignore the Source Address setting for this filter, leave this box blank. If you specify an
address in this box, you should also specify a subnet mask in the Source Mask box.
Source Address
Mask Enter the source mask of the IP address in a valid dot format. This address is the source subnet
mask. A subnet mask includes or excludes certain values. Subnetworks (or subnets) extend the IP
addressing scheme, allowing you to further divide a network into multiple segments.
If you specify a Source Address, you must also specify a Source Address Mask. Make sure that
the mask and address match with each other. For example, a bitwise AND of the mask and
address is equal to the address.
If you want to specify a range of addresses, use a subnet mask other than 255.255.255.255. For
example, an address/mask combination of 10.10.10.32/255.255.255.252 represents addresses
10.10.10.32-10.10.10.35.