[AusNOG] TPG routing issues

Shaun Dwyer shaun at dwyer.id.au
Tue Jul 21 17:30:35 EST 2009 

Hi All,

Thanks for your replies....

I seem to be noticing a trend where its all related to TPG's peering..  
perhaps they are doing some "traffic engineering" thats not entirely  
working.


Cheers!
-Shaun


On 21/07/2009, at 3:12 PM, Steven Lisson wrote:

> Hi,
>
> Had a call about one issue this morning (around 9:30am) in Melbourne  
> where a TPG customer could not ping a particular server (could reach  
> others on the network), could see the traffic coming in, and  
> response from the server going out over Pipe peering, routed traffic  
> to the TGP customer outbound over transit and then they could ping  
> everything.
>
> Have had this strange issue before in both Bne & Syd to TPG  
> customers but routing the individual IP onto transit always seems to  
> work, not best solution in the world but I know this work around is  
> easy and saves the customer bouncing back and forward with TPG  
> claming there is no issue J
>
> Steve
>
> From: ausnog-bounces at lists.ausnog.net [mailto:ausnog-bounces at lists.ausnog.net 
> ] On Behalf Of Shaun Dwyer
> Sent: Tuesday, 21 July 2009 4:55 PM
> To: ausnog at ausnog.net
> Cc: Shaun Dwyer; Chris Firth
> Subject: [AusNOG] TPG routing issues
>
> Hi,
>
> Is anyone else having any weird issues like this?
>
> Perhaps some one from the TPG NOC get in touch with me?
>
> A number of our mutual customers (your DSL, our hosting customers -  
> seem to be Melbourne based) have been having issues getting to a  
> number of random IPs within our network.
> Our support desk has been getting a continual stream of a 1-2 calls  
> per hour like this all day.
>
> I also am unable to traceroute back to them from these specific IPs,  
> but others in the range work fine.
>
>
> Cheers!
> -Shaun
>
>
> root at lb1:~# traceroute -s 203.170.87.145 203.219.252.130
> traceroute to 203.219.252.130 (203.219.252.130), 30 hops max, 40  
> byte packets
>  1  GigabitEthernet5-4-30.acc-cor1.per.syra.net.au (203.170.85.253)   
> 1.109 ms  1.439 ms  1.850 ms
>  2  GigabitEthernet0-1.acc-bdr2.per.syra.net.au (203.170.86.9)   
> 1.662 ms  1.768 ms  1.861 ms
>  3  tpgi.ix.waia.asn.au (198.32.212.17)  2.591 ms  2.590 ms  2.641 ms
>  4  nme-nxg-wal-csw1-po-5.tpgi.com.au (202.7.162.70)  62.871 ms   
> 62.868 ms  62.862 ms
>  5  * * *
>  6  * * *
>  7  * * *
>  8  * * *
>
> root at lb1:~# traceroute -s 203.170.87.146 203.219.252.130
> traceroute to 203.219.252.130 (203.219.252.130), 30 hops max, 40  
> byte packets
>  1  GigabitEthernet5-4-30.acc-cor1.per.syra.net.au (203.170.85.253)   
> 1.437 ms  1.835 ms  2.239 ms
>  2  GigabitEthernet0-1.acc-bdr2.per.syra.net.au (203.170.86.9)   
> 1.539 ms  1.644 ms  1.812 ms
>  3  tpgi.ix.waia.asn.au (198.32.212.17)  2.861 ms  2.887 ms  2.884 ms
>  4  * * *
>  5  nme-nxg-wal-lns101-ge-0-1.tpgi.com.au (220.245.179.202)  62.644  
> ms  62.661 ms  62.657 ms
>  6  * * *
>  7  203-219-252-130-adl-pow-ts2-2600.tpgi.com.au (203.219.252.130)   
> 80.021 ms  92.246 ms  75.773 ms
>
> root at lb1:~# traceroute -s 203.170.87.147 203.219.252.130
> traceroute to 203.219.252.130 (203.219.252.130), 30 hops max, 40  
> byte packets
>  1  GigabitEthernet5-4-30.acc-cor1.per.syra.net.au (203.170.85.253)   
> 1.098 ms  1.421 ms  1.851 ms
>  2  GigabitEthernet0-1.acc-bdr2.per.syra.net.au (203.170.86.9)   
> 1.544 ms  1.591 ms  1.676 ms
>  3  tpgi.ix.waia.asn.au (198.32.212.17)  2.721 ms  2.801 ms  2.875 ms
>  4  * * *
>  5  * * *
>  6  * * *
>  7  * * *
>  8  * * *
>
> root at lb1:~# traceroute -s 203.170.87.148 203.219.252.130
> traceroute to 203.219.252.130 (203.219.252.130), 30 hops max, 40  
> byte packets
>  1  GigabitEthernet5-4-30.acc-cor1.per.syra.net.au (203.170.85.253)   
> 1.089 ms  1.462 ms  1.847 ms
>  2  GigabitEthernet0-1.acc-bdr2.per.syra.net.au (203.170.86.9)   
> 2.344 ms  2.358 ms  2.438 ms
>  3  tpgi.ix.waia.asn.au (198.32.212.17)  3.649 ms  3.651 ms  3.645 ms
>  4  nme-nxg-wal-csw1-po-5.tpgi.com.au (202.7.162.70)  62.827 ms   
> 62.847 ms  62.861 ms
>  5  nme-nxg-wal-lns101-ge-0-1.tpgi.com.au (220.245.179.202)  62.756  
> ms  62.779 ms  62.837 ms
>  6  203-219-252-130-adl-pow-ts2-2600.tpgi.com.au (203.219.252.130)   
> 72.038 ms  73.679 ms *
>  7  203-219-252-130-adl-pow-ts2-2600.tpgi.com.au (203.219.252.130)   
> 80.387 ms  86.061 ms  94.789 ms
> root at lb1:~# traceroute -s 203.170.87.149 203.219.252.130
> traceroute to 203.219.252.130 (203.219.252.130), 30 hops max, 40  
> byte packets
>  1  GigabitEthernet5-4-30.acc-cor1.per.syra.net.au (203.170.85.253)   
> 1.109 ms  1.418 ms  1.836 ms
>  2  GigabitEthernet0-1.acc-bdr2.per.syra.net.au (203.170.86.9)   
> 1.573 ms  1.574 ms  1.606 ms
>  3  tpgi.ix.waia.asn.au (198.32.212.17)  2.192 ms  2.319 ms  2.326 ms
>  4  * * *
>  5  * * *
>  6  * * 203-219-252-130-adl-pow-ts2-2600.tpgi.com.au  
> (203.219.252.130)  76.334 ms
>  7  203-219-252-130-adl-pow-ts2-2600.tpgi.com.au (203.219.252.130)   
> 85.848 ms * *
>
>
>
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