[AusNOG] Where to find Routing "Stuff"

[Trent Lloyd]

Hi Burt,

It's hard to be sure without some more precise details (as Tom requests, the IP range would be helpful), but here's some general troubleshooting info…

I am going to start by presuming the /23 subnet is an allocation from APNIC, if not, your issue might be a bit different to the below.

Secondly, the "UK" location on Speedtest, etc, will be coming from a Geolocation database.. these aren't always accurate, and even if they are, often only updated periodically.  So if you have a fresh allocation, it's possibly out of date.  Check the whois details at APNIC.. it may be either yours, or, the previous owners details had a UK listed address.  Harder to check the old owner (off hand anyway, there are some resources for this).. but check here to see the current listing:
http://www.apnic.net/apnic-info/whois_search

If you enter your network address with CIDR mask, and then select "All More Specific", you should see a result similar to this that you can check the address on.

110.173.224.0/21
inetnum:        110.173.224.0 - 110.173.227.255
netname:        WEBINABOX-AP
descr:          Web In A Box
descr:          PO Box 328, Leederville, WA, 6903
country:        AU

Lastly, for your routing issues with packet loss.. one possible explanation is that another provider is advertising your range.  To check for this, we can use a public BGP looking glass 

There are many resources for this, I like route-views.org (though you need to telnet to a router, rather than use a Web UI), we can try test with the AARNet looking glass:
http://lg.aarnet.edu.au/cgi-bin/lg

Enter your network address (e.g. 110.173.224.0), then you can see a list of advertisements.. the main thing to check for is the origin AS number in each case.  Also double check the subnet mask matches (e.g. /23) and that it didn't find a larger or smaller advertisement.

Example: for our subnet, you can see

10084 45926
10084 45926
7606 10084 45926
10084 45926

In all cases here the origin AS is AS 45926 , which is us, which is good.  If you saw any AS paths ending in an AS that is not yours, it would bear further investigation.

Technically, these AS numbers aren't authenticated so that's not a complete test but it should give you a good place to start :-) 


If you follow up with the IP range and AS number we could help you explore in more depth for you
Trent Lloyd 





p +61 8 9481 0366 |  e trentl at webinabox.net.au |  w: http://www.webinabox.net.au

PO Box 328, LEEDERVILLE WA 6903



On 28/08/2013, at 1:42 PM, Burt Mascareigne <burt at prioritycomputer.com.au> wrote:

> Hi Noggers,
>  
> Not sure if the subject is misleading,  but….
>  
> We just got a new ASN for a new IPv4 /23.
>  
> A couple of things,  this route points to the UK,  even though we’re Aussies,  so,  I can only assume this “was” part of the UK Registrar? Maybe?  Or is it due to the route being pointed to the UK?  Maybe?
>  
> How do I go about finding out this stuff.
>  
> All the traceroutes come clean into TPG Global Switch, so,  BGP is up and well.  When I do the scary “speed test”  it thinks I’m in the UK….  Pings are crazy bad, and it generally not helpful,  however, when I put it to Sydney, it’s all well.
>  
> I just need to make sure there’s no “leaks” of routes going to the UK THEN bouncing to Aussie land.  All my Tracerts *from* Argentina, UK, Ireland, US etc all come “straight” to Aust.  Sometimes however,  we get MASSIVE packet drops, and traceroutes show packets going to the UK,   it’s TOTALLY bizzare. 
>  
> Anyone seen this level of weirdness,  or have a just exploded the Internet?
>  
>  
> <priority-computer-solutions_logo_011db88b.png>	
> Burt Mascareigne
> Technician
> Mob: 0414 450 962
> 
> <priority-computer-solutions_logo_0355e979.png>	<priority-computer-solutions_logo_042984ef.png>
> 
> Your Needs, Our Priority
> 
> 
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