Hi, thanks to Randy Romero and "NO UCE" for their replies. "NO UCE " points me in the right direction: Our Nameserver was NOT doing reverse name resolution for the IP address 0.0.0.0 (see ANyway, this got me thinking: (Sorry, currently only in cache) I t-h-i-n-k this applies http://66.102.7.104/search?q=cache:R5FH-mmeJ6sJ:www.fintech.ru/Library/BO/SEUMBO/V1/ch10/ch10.htm+0.0.0.0.in-addr.arpa.+Internet+PTR&hl=en ) Now the TSM server still asks for a hostname for 0.0.0.0 (seems to be normal) but our nameserver replys to this request immediately. regards Bernd -------- Original Message -------- Subject: TSM and DNS resolution problem Date: Wed, 16 Mar 2005 09:32:04 +0000 From: Bernd Schemmer <Bernd.Schemmer@gmx.de> To: sunmanagers@sunmanagers.org I've a strange problem with one of our TSM Servers: dsmadmc waits at least about 60 seconds after entering the userid before it prompts for the password. After that we can use dsmadmc normal but from time to time there's again a pause before it executes a command. Doing a snoop we found, that the machine sends the following requests to our nameserver (tsmarz.akabank.de is the TSM Server, cobalt1.akabank.de/ 194.127.238.28 is the nameserver) while starting dsmadmc: bash-2.05# snoop 194.127.238.28 Using device /dev/hme (promiscuous mode) tsmarz.akabank.de -> cobalt1.akabank.de DNS C 0.0.0.0.in-addr.arpa. Internet PTR ? tsmarz.akabank.de -> cobalt1.akabank.de DNS C 28.238.127.194.in-addr.arpa. Internet PTR ? cobalt1.akabank.de -> tsmarz.akabank.de DNS R 28.238.127.194.in-addr.arpa. Internet PTR cobalt1.akabank.de. tsmarz.akabank.de -> cobalt1.akabank.de DNS C cobalt1.akabank.de. Internet Addr ? cobalt1.akabank.de -> tsmarz.akabank.de DNS R cobalt1.akabank.de. Internet Addr 194.127.238.28 tsmarz.akabank.de -> cobalt1.akabank.de DNS C 0.0.0.0.in-addr.arpa. Internet PTR ? tsmarz.akabank.de -> cobalt1.akabank.de DNS C 0.0.0.0.in-addr.arpa. Internet PTR ? tsmarz.akabank.de -> cobalt1.akabank.de DNS C 0.0.0.0.in-addr.arpa. Internet PTR ? tsmarz.akabank.de -> cobalt1.akabank.de DNS C 0.0.0.0.in-addr.arpa. Internet PTR ? tsmarz.akabank.de -> cobalt1.akabank.de DNS C 0.0.0.0.in-addr.arpa. Internet PTR ? tsmarz.akabank.de -> cobalt1.akabank.de DNS C 0.0.0.0.in-addr.arpa. Internet PTR ? tsmarz.akabank.de -> cobalt1.akabank.de DNS C 0.0.0.0.in-addr.arpa. Internet PTR ? If we remove the entries from /etc/resolv.conf everything works fine. AFAIK the network and DNS configuration on the machine is okay: bash-2.05# uname -a SunOS tsmarz.akabank.de 5.9 Generic_112233-12 sun4u sparc SUNW,Ultra-60 bash-2.05# cat /etc/resolv.conf nameserver 194.127.238.28 domain akabank.de search akabank.de bash-2.05# ifconfig -a lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1 inet 127.0.0.1 netmask ff000000 hme0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3 inet 194.127.238.100 netmask ffffff00 broadcast 194.127.238.255 ether 8:0:20:c8:b4:0 bash-2.05# bash-2.05# nslookup tsmarz.akabank.de Server: cobalt1.akabank.de Address: 194.127.238.28 Name: tsmarz.akabank.de Address: 194.127.238.100 bash-2.05# nslookup 194.127.238.100 Server: cobalt1.akabank.de Address: 194.127.238.28 Name: tsmarz.akabank.de Address: 194.127.238.100 bash-2.05# bash-2.05# netstat -rn Routing Table: IPv4 Destination Gateway Flags Ref Use Interface -------------------- -------------------- ----- ----- ------ --------- 194.127.238.0 194.127.238.100 U 1 10 hme0 224.0.0.0 194.127.238.100 UG 1 0 default 194.127.238.10 UG 1 0 127.0.0.1 127.0.0.1 UH 2 62 lo0 bash-2.05# bash-2.05# dsmadmc IBM Tivoli Storage Manager Command Line Administrative Interface - Version 5, Release 2, Level 2.0 (c) Copyright by IBM Corporation and other(s) 1990, 2003. All Rights Reserved. Enter your user id: admin <here is the delay> Enter your password: Session established with server TSMARZ: Solaris 8/9 Server Version 5, Release 2, Level 2.0 Server date/time: 03/16/05 09:15:01 Last access: 03/16/05 09:10:30 I appreciate any hint where to look for the cause of this behaviour. regards Bernd -- Bernd Schemmer, Frankfurt am Main, Germany http://home.arcor.de/bnsmb/index.html Mas temprano que tarde el mundio cambiara Fidel Castro -- Bernd Schemmer, Frankfurt am Main, Germany http://home.arcor.de/bnsmb/index.html Mas temprano que tarde el mundio cambiara Fidel Castro _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagersReceived on Fri Mar 18 12:34:37 2005
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