[c-nsp] Traceroute doesn't see ASN

Sun Mar 16 23:26:00 EDT 2014

Are all the routers the same model? Are they all running the same OS? Are
they all the same manufacture?
You aren't giving a lot of information here.
In fact the only one that I see provide an ASN in your output appears to be
R3-Kty. How is anyone supposed to infer anything based off of that?

On Sun, Mar 16, 2014 at 11:03 PM, PlaWanSai RMUTT CPE IX <
pws_admin at thaicpe.com> wrote:

> 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.
>
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