Dear Anand,
Anand Shankar wrote:
> 1. Is it possible to have two or more different IPs assigned to the
> same physical host name (DNS Record Type A)?
>
Yes, it is possible to have more than one A type records for a host
name. See RFC 1034.
> 2. If yes, is it possible to assign different metric weights to
> prioritise traffic to one link over the other and also to provide fail
> over redundancy - ie if connectivity with one physical link breaks,
> the traffic flows in through the other link?
>
Nope. According to RFC mentioned above it is clear that you cannot
assign weights/distances to multiple A records. You can however do this
for MXs.
The RFC states
--- quote from RFC 1034 < 5.2.1 - 1 Client-resolver interface functions >---
Under the DNS, it
translates into a request for type A RRs. Since the DNS does
not preserve the order of RRs, this function may choose to
sort the returned addresses or select the "best" address if
the service returns only one choice to the client. Note that
a multiple address return is recommended, but a single
address may be the only way to emulate prior HOSTS.TXT
services.
--- quote from RFC end ---
> 3. Is this facility provided by DNS Registrars/ Service Providers like
> Network Solutions etc
>
Can you please elaborate what exactly you want to achieve? I am quite
unclear on what you are looking for..
As for NS records, I think its a ordered list of authoritative NSs.
Someone please comment on this?
--
Best Regards,
Sameer N. Ingole
http://weblogic.noroot.org/gallery2/
--
Better to light one candle than to curse the darkness.
_______________________________________________
ilugd mailinglist -- ilugd@lists.linux-delhi.org
http://frodo.hserus.net/mailman/listinfo/ilugd
Archives at: http://news.gmane.org/gmane.user-groups.linux.delhi
http://www.mail-archive.com/ilugd@lists.linux-delhi.org/
