[152800] in North American Network Operators' Group
Re: ASN source when using "-A with traceroute"
daemon@ATHENA.MIT.EDU (Alain Hebert)
Wed May 16 13:48:18 2012
Date: Wed, 16 May 2012 13:46:59 -0400
From: Alain Hebert <ahebert@pubnix.net>
To: nanog@nanog.org
In-Reply-To: <CAJ0+aXaArNvzn=MMgttUak-ixuBEw7XdBvpMca1yPpAHSBLyww@mail.gmail.com>
Reply-To: ahebert@pubnix.net
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
( I coudln't resist )
http://traceroute.sourceforge.net/
#define DEF_RADB_SERVER "whois.radb.net"
#define DEF_RADB_SERVICE "whois"
const char *get_as_path (const char *query) {
server = getenv ("RA_SERVER");
if (!server) server = DEF_RADB_SERVER;
service = getenv ("RA_SERVICE");
if (!service) service = DEF_RADB_SERVICE;
n = snprintf (buf, sizeof (buf), "%s\r\n", query);
Yadi, yada...
So unless radb croak... you'll be fine.
-----
Alain Hebert ahebert@pubnix.net
PubNIX Inc.
50 boul. St-Charles
P.O. Box 26770 Beaconsfield, Quebec H9W 6G7
Tel: 514-990-5911 http://www.pubnix.net Fax: 514-990-9443
On 05/16/12 13:19, Anurag Bhatia wrote:
> Hello everyone!
>
>
> I have a funny case - one of our upstream provider announced our address
> space for very short time which was well due to confusion since we
> requested them to announce one of other blocks while they by mistake
> announced both blocks.
>
> Anyways, now funny thing here is - whenever I run a traceroute from any of
> Linux server from any location, I see upsteam provider as well as our ASN
> in output of traceroute -A.
>
>
> This is not really a problem at all but I am just curious to know the
> source of IP-ASN mapping in traceroute output. Also any ideas on update
> frequency of that source?
>
>
>
> Thanks!
>
