[c-nsp] Anycast Questions

[Phil Mayers]

On 02/16/2011 08:19 AM, Gert Doering wrote:
> Hi,
>
> On Tue, Feb 15, 2011 at 11:57:32PM +0100, Peter Rathlev wrote:
>> It works like a charm. When you need to service a machine you just stop
>> the BGPd and do your thing, nobody notices. (Unless they're really smart
>> and look carefully of course.)
>
> Which makes "monitoring whether everything is fine" a somewhat more
> interesting challenge :-) - if the machine is up, but bgpd fails, the
> service might silently fall over to another instance and things like
> "does this anycasted DNS server still respond?" will happily report
> success...

SNMP to pool the BGP neighbour status?