Device Online Help

Creating a Black hole static route

While aggregating or injecting routes to other routers, a router may not have a route to the aggregated destination, which causes a "black hole." To avoid routing loops, you can configure a black hole static-route to the destination it is advertising. A black hole route is a route with invalid next hop, so that the data packets destined to this network will be dropped by the switch.

Note: To create a black hole static route, the NextHop field must be set to 225.225.225.225.

To create a static default route:

1. From the Device Manager menu bar, choose IP Routing > IP.

The IP dialog box opens with the Globals tab displayed.

2. Click the Static Routes tab.

The Static Routes tab opens.

3. Click Insert.

The Insert Static Routes dialog box opens.

4. In the Dest box, type the IP address.
5. In the Mask box, type the mask.
6. In the NextHop box, type 225.225.225.225 as the IP address of the router through which the specified route is accessible.
7. In the Metric box, type the HopOrMetric value.
8. In the Preference box, select the route preference.
9. Select the enable option.
10. Click Insert.

The default route record is created in the routing table.