The RIP Global Filter Table window displays the following parameters:
Type — Defines whether the current filter entry works on traffic coming into or out of the device.
Network Address — Type in the network pattern the filter entry is to affect. The network pattern works in conjunction with the network mask to define the filter entry.
Network Mask — Type in the letters F, 8, C, E, and 0 as many times as desired to indicate which network pattern part is important. The mask must be continuous from left to right. 00000000 means all addresses, ffffffff means one address (no address range). A combination of fs and 0s indicates a specific range. This combination must have f on the left side, 0 on the right side, and a single F, 8, C, or E, or 0 between them.
For example, if the network pattern is set to 12345678, the network mask can be set to ffff0000. This indicates that only the first four network pattern numbers are checked, and the remaining numbers are irrelevant. In this example, only RIP messages with the numbers 1234 as their first four digits are affected.
Action — Defines whether the indicated packets are forwarded (permit) or blocked (denied) when the current filter entry conditions are met. The parameter is used to fine-tune other filter entries.
For example, set a filter entry to block all RIP messages with a network pattern starting with 123, and set another filter entry to permit all RIP messages with a network pattern starting with 1234. As a result, all RIP messages with a network pattern starting with 123 that do not have 4 as the fourth digit are blocked.
The default is forward, but the default can be set by creating a general filter entry with the network mask 00000000, and setting it to permit or deny.
To add a RIP Global Filter:
Click . The RIP Global Filter Insert window is displayed.
Complete the table entry fields and click . The RIP Global Filter window is displayed.
Click . When the Status field displays “Finished!”, the entry is confirmed as created.
To edit a RIP Global Filter:
Click . The RIP Global Filter Edit window is displayed.
Edit the required table entry fields and click . The RIP Global Filter window is displayed.
Click . When the Status field displays “Finished!”, the fields are confirmed as modified.
To delete a RIP Global Filter:
Select the entry to delete.
Click .
Click . When the Status field displays “Finished!”, the entry is confirmed as deleted.