Configuring IPX Route Aggregation

IPX Route Aggregation enables you to introduce routes learned through RIP in a summarized form. Route aggregation compactly describes many IPX network numbers simultaneously by using an address and mask pair. For example, all addresses from C9000000 to C9FFFFFF can be represented using the address C9000000 and the mask FF000000.

To configure IPX Route Aggregation, complete the following steps:

1. Load NIASCFG and select the following parameter path:

   For LAN interfaces, select Configure NIAS > Protocols and Routing > Bindings > a LAN interface > Expert Bind Options > Aggregate Routes .

   For WAN interfaces, select Configure NIAS > Protocols and Routing > Bindings > a WAN interface > WAN Call Destinations > a call destination > Aggregate Routes .

2. Press Ins and configure the following parameters:

   1. Select Address Summary and enter the prefix for the network addresses to be aggregated.

      For example, any network beginning with C9, such as C9123829 or C9823878, can be aggregated using the address summary C9000000 with a mask of FF000000.

   2. Select Mask and enter a number with Fs for the part of the mask that corresponds to the common prefix of all network addresses to be aggregated and 0s for the rest of the mask.

      For example, to summarize all addresses that begin with the same three numbers, set the mask to FFF00000.

   3. Optionally, to advertise an aggregate route only when at least one of the routes is received, select Type and set it to Dynamic .

      For LANs, Type can be set only to Dynamic . If you select Static for a WAN interface, the aggregate route is always advertised. Aggregate routes associated with static on-demand WAN calls should always be set to Static .

      NOTE:  If Type is set to Dynamic , only routes learned through RIP will trigger the dynamic aggregate route to be advertised. Routes learned through NLSP will not trigger the dynamic aggregate route to be advertised. Routers that have dynamic aggregate routes configured on some interfaces should have NSLP disabled and RIP enabled on those interfaces.

3. Press Esc and save your changes.

4. Press Esc to return to the Internetworking Configuration menu.