From: JOSEPH KREMBLAS (jkremblas@REDHEARTGIFTS.COM)
Date: Wed Jan 07 2004 - 20:41:44 EST
Greetings,
I've been doing some DNS testing today and I've set up a primary and
backup DNS server. When I shutdown the primary DNS server and use the
'nslookup' command to test failover to the backup DNS server, it takes
1m.15s. When I issue the same command from a Windows XP machine, the
response is instant: Complaining that the primary is "down" and displays
that it consulting the backup for the answer to the nslookup query.
Is there a flag or attribute I can set to improve the response time
of nslookup when the primary DNS server goes down? Why the instant response
from XP and not from AIX?
The contents of my named.dc name zone file follows, if this helps:
-----start-----
; /etc/named.dc - name server data file
; name server data file
; (also see /etc/named.boot)
;
; NAME TTL CLASS TYPE RDATA
;
; setting default domain to "kremco.com"
;
@ 9999999 IN SOA nimbus.kremco.com.
root.nimbus.kremco.com.(
1.1 ; Serial
3600 ; Refresh
300 ; Retry
3600000 ; Expire
86400 ) ; Minimum
9999999 IN NS nimbus
suzkre 9999999 IN A 192.168.2.4
nimbus 9999999 IN A 192.168.2.5
azwinxplap01 9999999 IN A 192.168.2.6
loopback 9999999 IN A 127.0.0.1 ; loopback (lo0)
name/address
localhost 9999999 IN CNAME loopback
-----end-----
Cheers.
--joseph
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