Configuring Filtered Routes
Use the Filtered Routes window to add filters to networks or hosts.
You can add filters to IP destinations to prevent IP packets from being
forwarded to networks/subnets, and prevent routing information from being disseminated
concerning such destinations. IP packets destined for filtered network/subnets are
discarded.
You must specify a filtered network/subnet together with its subnet mask.
For example, to filter a subnet of a class B network, using the third byte for subnetting,
the mask is 255.255.255.0.
Using the filter mechanism is more efficient than IP access controls,
although not as flexible. Filters also affect the operation of the IP routing protocols,
unlike access controls.
Procedure:
Step |
Action |
1 |
Click ADD. The Add/Modify window
appears. |
2 |
In the Add/Modify window, enter a
network/subnet IP address into the IP Address field. |
3 |
Enter a network/subnet IP address subnet
mask into the Mask field. |
4 |
Click Apply. |
Field Descriptions
IP
Address |
Network/subnet IP address
of the filtered route. |
Mask |
Network/subnet IP address
subnet mask of the filtered route. |
|