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Full Discussion: The dig command
Special Forums IP Networking The dig command Post 302520371 by neil_is_ere on Friday 6th of May 2011 04:48:40 PM
Old 05-06-2011
The dig command
Can I use two different DNS servers in the one command in the form of primary and secondary.

Take this for example:
dig @<primaryAddress> @<secondaryAddress> MX domain.tld

So if primary address is down, it will use the secondary address as a backup. It seems to work when testing, but thought I'd ask around to see if there is any problems with it (since it doesn't exactly specific you can do it like this in the man pages).

Thanks.
 

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LEARN ABOUT CENTOS

dnssec-checkds

DNSSEC-CHECKDS(8)						       BIND9							 DNSSEC-CHECKDS(8)

NAME

       dnssec-checkds - A DNSSEC delegation consistency checking tool.

SYNOPSIS

       dnssec-checkds [-l domain] [-f file] [-d dig path] [-D dsfromkey path] {zone}

       dnssec-dsfromkey [-l domain] [-f file] [-d dig path] [-D dsfromkey path] {zone}

DESCRIPTION

       dnssec-checkds verifies the correctness of Delegation Signer (DS) or DNSSEC Lookaside Validation (DLV) resource records for keys in a
       specified zone.

OPTIONS

       -f file
	   If a file is specified, then the zone is read from that file to find the DNSKEY records. If not, then the DNSKEY records for the zone
	   are looked up in the DNS.

       -l domain
	   Check for a DLV record in the specified lookaside domain, instead of checking for a DS record in the zone's parent. For example, to
	   check for DLV records for "example.com" in ISC's DLV zone, use: dnssec-checkds -l dlv.isc.org example.com

       -d dig path
	   Specifies a path to a dig binary. Used for testing.

       -D dsfromkey path
	   Specifies a path to a dnssec-dsfromkey binary. Used for testing.

SEE ALSO

       dnssec-dsfromkey(8), dnssec-keygen(8), dnssec-signzone(8),

AUTHOR

       Internet Systems Consortium

COPYRIGHT

       Copyright (C) 2012, 2013 Internet Systems Consortium, Inc. ("ISC")

BIND9								  April 11, 2012						 DNSSEC-CHECKDS(8)
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