[AusNOG] Dealing with global route views

[James Braunegg]

Dear Andrew

This week has been "crazy" for DDoS attacks with SSDP amplification attacks being the flavor of the week internationally, so I can understand your "pain"

A key part of isolating yourself from "back ground noise" is the ability separate Domestic Transit and Peering from International transit and if you can International peering using BGP communities.

Both Vocus and Pipe support BGP communities, however in both cases I highly recommend contacting the NOC for up to date communities as upstream providers change all the time and the NOC of each provider can provide great assistance in "tuning" your service.

That being said

Examples of Vocus (AS4826) communities can be found here (not all  communities listed ) http://tools.vocus.com.au/additionals/communities2.2.html

Examples of Pipe (AS 24130) communities can be found here (not all  communities listed)  https://lg.pipenetworks.com/PIPE%20Networks%20AS24130%20BGP%20Routing%20Policy.pdf

With reference to influencing outbound traffic I highly recommend creating route maps or using software such as http://www.noction.com/

Depending how far you want to engineer your network you can also get very "funky" with your own international upstream providers and say establish GRE tunnels back to Australia and if you can justify it your own capacity across cable systems which can be used independently from your current two upstream providers.

Alternately this is also a perfect example of how useful having a backup on demand IP transit provider on a service such as Megaport which allows you to turn on / off a service on demand within minutes if required, use a bit of SDN and you could automate the entire process upon detecting issues!

Hope that helps, happy to provide more information if you require it.

Kindest Regards

James Braunegg
P:  1300 769 972  |  M:  0488 997 207 |  D:  (03) 9751 7616
E:   james.braunegg at micron21.com<mailto:james.braunegg at micron21.com>  |  ABN:  12 109 977 666
W:  www.micron21.com/ddos-protection<http://www.micron21.com/ddos-protection>   T: @micron21


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From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Andrew Yager
Sent: Saturday, August 02, 2014 7:23 PM
To: ausnog at lists.ausnog.net
Subject: [AusNOG] Dealing with global route views

Hi All,

Coming to the end of a couple of long weeks, and brain is a bit fried.

For the last few days we've had issues where one or other of our two primary internal upstreams has had DOS attacks affecting their connectivity on foreign soil (i.e. connectivity via Level 3 is borked, or connectivity via he.net<http://he.net> is borked), which has adversely affected our ability to reach certain parts of the world, and conversely their ability to reach us.

In both cases we don't really want to drop either transit provider completely as the domestic performance we get from them both is good.

On another day my brain might see this really clearly, but just can't get my head into it for now.

Can we:

a) adjust our internal preferences accurately enough to influence our outbound traffic to prefer one or the other in particular, operator driven scenarios
b) influence our rest of the world traffic to avoid he.net<http://he.net> or level 3

... and how?

I believe one of our upstreams (Vocus) will honour some "do not advertise here" communities (but I don't know where the list is), but I suspect the other (PIPE) will not?

Thanks,
Andrew

--
Andrew Yager, Managing Director   MACS (Snr) CP BCompSc MCP
Real World Technology Solutions Pty Ltd - IT people you can trust
ph: 1300 798 718 or (02) 9037 0500
fax: (02) 9037 0591
http://www.rwts.com.au/
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