nanog mailing list archives
Re: [Update] Re: New ISP to market, BCP 38, and new tactics
From: Nathan Ward <nanog () daork net>
Date: Sat, 7 Feb 2009 14:39:39 +1300
On 7/02/2009, at 5:20 AM, Brad Fleming wrote:
On Feb 4, 2009, at 2:52 AM, Steve Bertrand wrote:http://tools.ietf.org/html/draft-kumari-blackhole-urpf-02If I understand this correctly, there will be a route entered on each edge router for all sources that are participating in a DDoS attack. Is anyone worried about TCAM usage if one of their customers gets hit with a larger DDoS attack? Add in our IPv6 and V4 multicast tables chewing up more TCAM space and things get even more dicy!For my part, I'd be worried if the overall IPv4 unicast route table got much larger than ~1million entries because our hardware-based routers might run out of TCAM and bring the whole network to a screeching halt.
Or more than 256k routes on a SUP2, or 192k/239K routes on a SUP720. We are at 285798 as of last CIDR report. So, I guess you should be worried.. now :-) -- Nathan Ward
Current thread:
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics, (continued)
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics Steve Bertrand (Feb 03)
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics Nathan Ward (Feb 03)
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics Mark Tinka (Feb 07)
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics Bill Stewart (Feb 04)
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics Steve Bertrand (Feb 03)
- RE: [Update] Re: New ISP to market, BCP 38, and new tactics Skeeve Stevens (Feb 03)
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics Steve Bertrand (Feb 03)
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics Mark Tinka (Feb 07)
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics Michael Butler (Feb 05)
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics Brad Fleming (Feb 06)
- Re: [Update] Re: New ISP to market, BCP 38, and new tactics Nathan Ward (Feb 06)