nLayer IP transit

Richard A Steenbergen ras at
Fri Aug 2 19:56:22 UTC 2013

On Fri, Aug 02, 2013 at 07:11:34AM +1000, Mark Tees wrote:
> Thanks for the replies.
> I think I saw somewhere around the Cloudflare outage post someone 
> mentioning that since the person at Juniper that was responsible for 
> Flowspec left it all went down hill.
> I take it then Flowspec is still used internally then? I am still 
> wondering if its best to avoid Flowspec and roll your own firewall 
> rules applied via Netconf for transit interfaces to achieve the same 
> sort of functionality.

It's a lot less likely to go south if you control the routes that go 
into the system. That said, it still breaks some things just by having 
it enabled (like NSR, though I suppose one could argue that NSR breaks 
itself :P), so you might be better served with a netconf distribution of 
rules if you want to avoid those potential issues.

Richard A Steenbergen <ras at>
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)

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