Configuring Bgp4 Null0 Routing - Brocade Communications Systems ICX 7250 Series Configuration Manual
Fastiron layer 3 routing
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- Configuration manual (593 pages) ,
- Software update (128 pages)
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Configuring BGP4 restart
FIGURE 31 SAMPLE null0 routing application
Configuring BGP4 null0 routing
The following example configures a null0 routing application to stop denial of service attacks from remote hosts on the Internet.
1.
Select a device, for example, device 6, to distribute null0 routes throughout the BGP4 network.
2.
To configure a route-map perform the following step.
•
Configure a route-map to match a particular tag (50) and set the next-hop address to an unused network address
(10.199.1.1).
3.
Set the local-preference to a value higher than any possible internal or external local-preference (50).
4.
Complete the route map by setting origin to IGP.
5.
On device 6, redistribute the static routes into BGP4, using route-map route-map-name (redistribute static route-map block
user).
6.
To configure a route-map perform the following step.
•
On device 1, (the device facing the Internet), configure a null0 route matching the next-hop address in the route-map (ip
route 10.199.1.1/32 null0).
318
Brocade FastIron Layer 3 Routing Configuration Guide
53-1003903-04
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