`Net Routers Still Feeling Effects of Code Red, Nimda
posted by: valvoline on 15/10/2001 @ 22.29.38
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 New Hampshire firm Renesys, which does advanced research for clients that include Akamai Technologies and the Department of Defense, has concluded that Code Red and Nimda still represent a serious threat to routing stability in the Internet.
Particularly hard-hit are routers that use Border Gateway Protocol (BGP) Version 4, which is used by ISPs and companies to connect their networks to the Internet.
"The unbelievable barrage of traffic they have caused is creating overload conditions on BGP routers," says Renesys President Andrew Ogielski.
BGP routers tell other routers whether it`s possible to reach certain destinations through their route. Routers that support BGP are built by Cisco, Juniper Networks and others. But the computer worms are causing BGP routers to fail, or keep traffic from flowing to particular networks, Ogielski says.
"We hear networks going up and down across the Internet," he says, pointing to an analysis conducted on 150 separate BGP routers from ISPs that include AT&T, Verio, Global Crossing and Qwest Communications. Renesys obtains this daily router traffic data from RIPE, an organization in Amsterdam that assigns domain names in Europe.
The worms are creating a kind of "tsunami over the entire Internet," Ogielski says. In a year of analyzing the router output in a project for the Defense Advanced Research Projects Agency, the firm has never previously seen this type of Internet routing problem.
ISPs with large backbone networks aren`t feeling the brunt of this, but "the worst damage is to corporations and universities," Ogielski says. The result is that their networks just seem to "disappear" from the Internet.
©2001 Network World, Inc. All rights reserved.
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