nanog mailing list archives

Re: Weird Issues within L3


From: Blair Trosper <blair.trosper () gmail com>
Date: Tue, 7 Oct 2014 16:19:30 -0500

Not to mention known bugs with how traffic is routed in large system like
Google...because of any/multicast and all.  (I hear it's a known bug
internally.)

I personally love the Level 3 public DNS servers, but they do carry some
quirks with them, as all things in life do.

On Tue, Oct 7, 2014 at 3:51 PM, Nick Olsen <nick () flhsi com> wrote:

The 4.2.2.x machines are known to have some pretty heavy handed ICMP rate
limits.

 I'd suggest trying to hit anything on level3 but those...

 Nick Olsen
Network Operations  (855) FLSPEED  x106


----------------------------------------
 From: "Khurram Khan" <kkhan () brokenflea net>
Sent: Tuesday, October 07, 2014 4:48 PM
To: "nanog () nanog org" <nanog () nanog org>
Subject: Weird Issues within L3
Hi Group,

We have a couple of circuits , internet facing with Level 3 and from
our edge in San Diego, seeing some packet loss when trying a ping to
4.2.2.4, sourcing from 63.214.184.3. anyone seeing a similar issue ?

Packet sent with a source address of 63.214.184.3
!.!!!.!!!!!!!!!!!!!...!!!..!!!!!!.!!.!!!!!!.!..!!.!!.!!!!!!!!!!!!!!!!!
!!!!!!!!!.!!.!!!..!!!!!.!!!!.!
Success rate is 80 percent (80/100), round-trip min/avg/max = 12/13/16 ms





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