converting our anycast node from quagga

Ondrej Zajicek santiago at crfreenet.org
Fri Jul 3 17:18:33 CEST 2015


On Fri, Jul 03, 2015 at 04:26:26PM +0200, Peter Hudec wrote:
> Hi,
> 
> I just started to play with bird.
> 
> My anycast node setup is as follows.
> 
> - each anycast server is serving form 1 up to 3 anycast prefixes
> - the anycast adresses are assigned to the dummyX interfaces as
> /32(IPv4) or /128(IPv6)
> - the BGP/quagga/ is advertising the /24 or /48 (added aggregate-address
> ......../24 (/48) summary-only
> - if I put the dummyX interface down, the BGP will stop announce the
> route associated to this interface, both IPv4 and IPv6
> - if I put the dummyX interface up, the BGP will start announce the route
> 
> The setup is a little more complex (metric, communities, preferencies,
> ..), but this is the main idea how it works. In another words I could
> stop/start announce the anycast prefix without reconfiguring the bgp daemon.
> 
> Please, could someone point me how to do this in bird.
> There is direct protocol, but I see /32 routes, not /24

Hi

Direct protocol just create routes based on assigned addresses. You could
define static device routes using static protocol. These should also
appear/disappear based on whether the associated interface goes up/down.

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."
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