Redundancy or secondary DNS - 2 ISPs
Bob Little
rlittle at graphikdimensions.com
Tue Apr 12 13:14:09 UTC 2005
Hi,
It's apparent to me that I do not understand the myriad of options,
features and concepts of DNS configuration. Maybe I don't really have a
DNS issue here - I don't know.
Background -
I have two seperate DNS servers:
ns1.gddirect.net is on a Road Runner network: 24.199.173.56/255.255.255.248
ns2.gddirect.net is on a DSL network: 216.237.238.82/255.255.255.248
The idea was to have ns1 and the Road Runner be our default gateway, and
in the event of a server or ISP failure, ns2 and the DSL connection
would become the default gateway via some ethernet card re-aliasing.
But what I'm finding is that when the primary server - ns1/Road Runner
is offline/crashed/shutdown, my domain gddirect.net cannot be reached at
all - even though ns2 is up and running.
Maybe I'm expecting DNS to do something it isn't designed to do. I know
I have some configuration issues, but I don't know what topics in TFM to
R up on.
Sorry if I haven't provided enough info, it's been a *very* long day.
**********************************************
NS1's zone file:
$TTL 3600
gddirect.net. IN SOA ns1.gddirect.net. rlittle (
2005041105 ; serial
3600 ; refresh
3600 ; retry
604800 ; expire
3600 ; ttl
)
@ IN NS ns1.gddirect.net.
@ IN NS ns2.gddirect.net.
@ IN MX 10 mx1.gddirect.net.
@ IN MX 30 mx2.gddirect.net.
@ IN A 24.199.173.58
@ IN A 216.237.238.82
mx1.gddirect.net. IN A 24.199.173.58
mx2.gddirect.net. IN A 216.237.238.82
ns1 IN A 24.199.173.58
ns2 IN A 216.237.238.82
********************************************
NS2's zone file:
$TTL 3600
gddirect.net. IN SOA ns2.gddirect.net. rlittle (
2005041105 ; serial
3600 ; refresh
3600 ; retry
604800 ; expire
3600 ; ttl
)
@ IN NS ns2.gddirect.net.
@ IN NS ns1.gddirect.net.
@ IN MX 10 mx2.gddirect.net.
@ IN MX 30 mx1.gddirect.net.
@ IN A 216.237.238.82
@ IN A 24.199.173.58
mx2.gddirect.net. IN A 216.237.238.82
mx1.gddirect.net. IN A 24.199.173.58
ns2 IN A 216.237.238.82
ns1 IN A 24.199.173.58
*******************************************
Any help would be greatly appreciated.
Bob Little
Graphik Dimensions, Ltd.
High Point, NC
--
Bob Little
Graphik Dimensions, Ltd.
High Point, NC
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