On Tue, Jan 15, 2008 at 10:03:29AM -0500, Brian J. Murrell wrote: > On Mon, 2008-01-14 at 14:28 -0800, Tom Eastep wrote: > > Andrew Suffield wrote: > > > On Mon, Jan 14, 2008 at 12:58:32PM -0800, Tom Eastep wrote:. > > >> Depending on whether your providers support routing protocols on the > > >> gateway routers. > > > > > > It works without that if the interfaces go up and down at the > > > appropriate moments (ie, they're ppp interfaces or something > > > similar). In that configuration it's a routing network consisting of a > > > single host with no routing protocols running, which is a little > > > weird, but functional. You simply give zebra a bunch of static routes > > > with suitable metrics, and it inserts and removes them as the > > > interfaces change state. > > > > Interesting. > > Interesting, yes, but in my experience, the vast majority of ISP > troubles are blackholes after the last mile connection. IOW, interface > to the ISP stays up but nothing you send via the ISP goes anywhere. Thi > s especially true of the bridged ethernet/DHCP type outfits like the > Cable companies. My cable could be sliced outside my house and my > interface will stay up. > > The news with DSL/PPPoE is a bit better. If my phone line dies the PPP > interface will go down. That is only due to the keep-alive mechanism > built into PPP that one can enable.
Here in the UK, you can choose between DSL with PPPo[AE], or expensive ISDN-based lines, so it's a fairly reliable approach for me. If you live in an area where pseudo-ethernet cable connections are the norm, this will indeed not work for you, since they don't bother implementing link state. > A lot of this goes back to Tom's past assertions that Linux needs a > good/proper routing solution. I tend to agree with him. I have not > really thought about requirements for such a beast but I do know that > trying to manage routing and routing tables in linux is akin to > programming in assembler. quagga's the best that's currently available. I'd certainly be happy to see something better, but I'm not going to lose any sleep over it. It's still easier to work with than IOS. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Shorewall-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/shorewall-users
