[c-nsp] Traceroute doesn't see ASN

[PlaWanSai RMUTT CPE IX]

But this problem occurs on router. Some router can't get ASN.

Thank you very much.

From: Aaron [mailto:dudepron at gmail.com] 
Sent: Thursday, March 13, 2014 9:21 PM
To: PlaWanSai RMUTT CPE IX
Cc: cisco-nsp
Subject: Re: [c-nsp] Traceroute doesn't see ASN

It depends on the implementation of traceroute.
There are tools out there that will give you the asn. Then there is the
debate on how is that information gathered and the reliability. 
I will start you here.
http://seclists.org/nanog/2005/Mar/337

On Thu, Mar 13, 2014 at 1:52 AM, PlaWanSai RMUTT CPE IX
<pws_admin at thaicpe.com> wrote:
Hi all,

                Why some device can see the ASN?

RP/0/RP0/CPU0:R2-CRS#traceroute

Wed Mar 12 14:14:00.237

Protocol [ipv4]: ipv4

Target IP address: www.facebook.com

Source address:

Numeric display? [no]:

Timeout in seconds [3]:

Probe count [3]:

Minimum Time to Live [1]:

Maximum Time to Live [30]:

Port Number [33434]:

Loose, Strict, Record, Timestamp, Verbose[none]:

Type escape sequence to abort.

Tracing the route to 31.13.79.96

1  x.19.7.53 3 msec  3 msec  0 msec

 2  x.19.7.114 3 msec  3 msec

    x.19.7.214 0 msec

 3  x.19.9.158 30 msec  31 msec  28 msec

 4   *  *

    x.19.9.226 31 msec

 5   *  *  *

 6   *  *  *

 7   *  *  *

 8   *  *  *

RP/0/RP0/CPU0:R4-CRS#traceroute

Wed Mar 12 14:27:33.713

Protocol [ipv4]: ipv4

Target IP address: www.facebook.com

Source address:

Numeric display? [no]:

Timeout in seconds [3]:

Probe count [3]:

Minimum Time to Live [1]:

Maximum Time to Live [30]:

Port Number [33434]:

Loose, Strict, Record, Timestamp, Verbose[none]:

Type escape sequence to abort.

Tracing the route to 31.13.79.96

1  x.19.7.97 4 msec  3 msec  0 msec

 2  x.19.14.130 0 msec  0 msec

    x.19.14.134 0 msec

 3  x.19.14.22 3 msec

    x.19.14.142 0 msec

    x.19.14.14 0 msec

 4  x.19.9.226 31 msec  34 msec  32 msec

 5   *  *  *

 6   *  *  *

 7   *

RP/0/RP0/CPU0:R1-CRS#traceroute

Wed Mar 12 14:27:54.673

Protocol [ipv4]: ipv4

Target IP address: www.facebook.com

Source address:

Numeric display? [no]:

Timeout in seconds [3]:

Probe count [3]:

Minimum Time to Live [1]:

Maximum Time to Live [30]:

Port Number [33434]:

Loose, Strict, Record, Timestamp, Verbose[none]:

Type escape sequence to abort.

Tracing the route to 31.13.79.96

1   *

    x.19.9.158 31 msec  31 msec

 2  x.79.197.65 27 msec  27 msec  27 msec

 3  x.13.31.229 27 msec  29 msec  28 msec

 4  edge-star-shv-09-sin1.facebook.com (31.13.79.96) 27 msec  27 msec  27
msec

RP/0/RP0/CPU0:R3-CRS#traceroute

Wed Mar 12 14:28:24.422

Protocol [ipv4]: ipv4

Target IP address: www.facebook.com

Source address:

Numeric display? [no]:

Timeout in seconds [3]:

Probe count [3]:

Minimum Time to Live [1]:

Maximum Time to Live [30]:

Port Number [33434]:

Loose, Strict, Record, Timestamp, Verbose[none]:

Type escape sequence to abort.

Tracing the route to 31.13.79.96

1   *

    x.19.7.81 0 msec  0 msec

 2  x.19.7.126 2 msec  1 msec

    x.19.7.130 3 msec

 3  x.19.9.158 31 msec

    x.19.9.150 30 msec

    x.19.9.158 30 msec

 4   *  *  *

 5   *  *  *

 6   *  *

Microsoft Windows [Version 6.1.7601]

Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Users\Tat>tracert 31.13.79.96

Tracing route to edge-star-shv-09-sin1.facebook.com [31.13.79.96]

over a maximum of 30 hops:

  1    31 ms    31 ms    14 ms  x.47.249.65

  2    19 ms    19 ms    19 ms  x.47.250.177

  3    <1 ms    <1 ms    <1 ms  x.47.247.181

  4    <1 ms    <1 ms    <1 ms  x.47.247.102

  5    49 ms    64 ms    49 ms  x.79.197.65

  6    44 ms    29 ms    29 ms  x.13.31.229]

  7    46 ms    46 ms    28 ms  edge-star-shv-09-sin1.facebook.com
[31.13.79.96]

Trace complete.

C:\Users\Tat>

R3-Kty>tr 31.13.79.96

Type escape sequence to abort.

Tracing the route to edge-star-shv-09-sin1.facebook.com (31.13.79.96)

  1 x.19.9.150 28 msec 36 msec 32 msec

  2 x.79.197.65 32 msec 32 msec 28 msec

  3 x.13.31.229 [AS 32934] 40 msec 36 msec 32 msec

  4 edge-star-shv-09-sin1.facebook.com (31.13.79.96) [AS 32934] 32 msec 32
msec 28 msec

Thank you very much.

_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/