Not too sure if this falls into NANOG or not but I thought I'd give it a shot. I'm seeing some wierd responses from the Sprintlink primary name server (ns1.sprintlink.com) and I wanted to know if anyone could explain the behavior. Pinging 204.117.214.10 from San Francisco CA (GTE & Pacbell) and our colo in Bay City MI (MCI), I get a standard response. However, if I ping from our colo in Cambridge MA (GTE), I get a response of "2 times amplification" instead of packet loss. I've certainly seen amplification from ping in the past, but I thought it was a host/interface configuration issue that would affect all external hosts equally. I did not believe it had anything to do with routing, but now I'm not so sure. Anyone have any clues on why this is happening? Can anyone explain why ICMP amplification would occur? Aaron Tavistock Network Engineer / UNIX Systems Administrator Total Entertainment Network (http://www.ten.net)
On Mon, Apr 13, 1998 at 12:01:49PM -0700, Aaron Tavistock wrote:
Anyone have any clues on why this is happening? Can anyone explain why ICMP amplification would occur?
This happens when a router with a protect circuit and a router with working circuit both think they should be passing traffic. pete -- Peter T. Whiting Sprint - MS VARESB213 - 12490 Sunrise Valley Drive - Reston VA, 22096 Phone: (703) 689-7963 Fax: (703) 478-5471 Email: pwhiting@sprint.net
Not too sure if this falls into NANOG or not but I thought I'd give it a shot.
No, it does not. Please report it to your network service provider (in this case, <ops@bbnplanet.com>). NANOG is not for reports of problems by end-users to service providers. Expressly *NOT* *NOT* *NOT* for that. --jhawk
Pinging 204.117.214.10 from San Francisco CA (GTE & Pacbell) and our colo in Bay City MI (MCI), I get a standard response. However, if I ping from our colo in Cambridge MA (GTE), I get a response of "2 times amplification" instead of packet loss.
participants (3)
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Aaron Tavistock -
John Hawkinson -
Peter Whiting