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тАО01-23-2005 02:36 PM
тАО01-23-2005 02:36 PM
Ftp failed
Hi all,
I have a question about APA. After I installed APA in my server, I try to disable them. The port on the switch is set to 100Full Duplex / Fixed / no autoneg. Then I found that the network was fine except ftp doesn't work. The error said
421 Service not available, remote server has closed connection
and the syslog shows
Jan 24 10:47:54 server2 ftpd[3261]: Data port : 20
Jan 24 10:49:14 server2 ftpd[3261]: FTP server (Revision 1.1 Version wuftpd-2.6.1 Tue Jul 15 07:42:07 GMT 2003) ready.
Jan 24 10:49:14 server2 ftpd[3261]: lost connection to server3 [::ffff:192.168.1.176]
Jan 24 10:49:14 server2 ftpd[3261]: FTP session closed
Jan 24 10:59:04 server2 vmunix: intl100(0):Invalid mcast info. dhg_count 0 dhg_len 6
Jan 24 11:13:21 server2 ftpd[4265]: Data port : 20
Jan 24 11:14:41 server2 ftpd[4265]: FTP server (Revision 1.1 Version wuftpd-2.6.1 Tue Jul 15 07:42:07 GMT 2003) ready.
Jan 24 11:14:41 server2 ftpd[4265]: lost connection to server1 [::ffff:192.168.1.180]
Jan 24 11:14:41 server2 ftpd[4265]: FTP session closed
Jan 24 11:19:30 server2 vmunix: intl100(0):Invalid mcast info. dhg_count 0 dhg_len 6
Jan 24 11:35:26 server2 vmunix: intl100(0):Invalid mcast info. dhg_count 0 dhg_len 6
Jan 24 11:35:52 server2 ftpd[6459]: Data port : 20
Jan 24 11:37:12 server2 ftpd[6459]: FTP server (Revision 1.1 Version wuftpd-2.6.1 Tue Jul 15 07:42:07 GMT 2003) ready.
Jan 24 11:37:12 server2 ftpd[6459]: lost connection to server1 [::ffff:192.168.1.180]
Jan 24 11:37:12 server2 ftpd[6459]: FTP session closed
Did you encounter it?
Achillies
I have a question about APA. After I installed APA in my server, I try to disable them. The port on the switch is set to 100Full Duplex / Fixed / no autoneg. Then I found that the network was fine except ftp doesn't work. The error said
421 Service not available, remote server has closed connection
and the syslog shows
Jan 24 10:47:54 server2 ftpd[3261]: Data port : 20
Jan 24 10:49:14 server2 ftpd[3261]: FTP server (Revision 1.1 Version wuftpd-2.6.1 Tue Jul 15 07:42:07 GMT 2003) ready.
Jan 24 10:49:14 server2 ftpd[3261]: lost connection to server3 [::ffff:192.168.1.176]
Jan 24 10:49:14 server2 ftpd[3261]: FTP session closed
Jan 24 10:59:04 server2 vmunix: intl100(0):Invalid mcast info. dhg_count 0 dhg_len 6
Jan 24 11:13:21 server2 ftpd[4265]: Data port : 20
Jan 24 11:14:41 server2 ftpd[4265]: FTP server (Revision 1.1 Version wuftpd-2.6.1 Tue Jul 15 07:42:07 GMT 2003) ready.
Jan 24 11:14:41 server2 ftpd[4265]: lost connection to server1 [::ffff:192.168.1.180]
Jan 24 11:14:41 server2 ftpd[4265]: FTP session closed
Jan 24 11:19:30 server2 vmunix: intl100(0):Invalid mcast info. dhg_count 0 dhg_len 6
Jan 24 11:35:26 server2 vmunix: intl100(0):Invalid mcast info. dhg_count 0 dhg_len 6
Jan 24 11:35:52 server2 ftpd[6459]: Data port : 20
Jan 24 11:37:12 server2 ftpd[6459]: FTP server (Revision 1.1 Version wuftpd-2.6.1 Tue Jul 15 07:42:07 GMT 2003) ready.
Jan 24 11:37:12 server2 ftpd[6459]: lost connection to server1 [::ffff:192.168.1.180]
Jan 24 11:37:12 server2 ftpd[6459]: FTP session closed
Did you encounter it?
Achillies
3 REPLIES 3
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тАО01-23-2005 05:38 PM
тАО01-23-2005 05:38 PM
Re: Ftp failed
Looks like your server1 and server3 might be trying to connect to server2 using IPv6 protocol instead of the "normal" IPv4.
Should they do that? Does FTP work if you use IPv4 only?
Should they do that? Does FTP work if you use IPv4 only?
MK
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тАО01-23-2005 07:55 PM
тАО01-23-2005 07:55 PM
Re: Ftp failed
How to check and change to IPv4?
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тАО01-24-2005 10:57 PM
тАО01-24-2005 10:57 PM
Re: Ftp failed
Is there some kind of firewall between the 2 systems ?
It appears that the inbound command connection works, but the outbound data connection fails to reach the client system (server3).
Try passive mode with ftp on the client.
If I understand that you have disabled APA, It's possible that the switch is still trying to use multiple ports, and is passing the inbound data to an unused port on your system ?
You may need to trace the intl100 driver with nettl or ethereal to observe the failure.
It appears that the inbound command connection works, but the outbound data connection fails to reach the client system (server3).
Try passive mode with ftp on the client.
If I understand that you have disabled APA, It's possible that the switch is still trying to use multiple ports, and is passing the inbound data to an unused port on your system ?
You may need to trace the intl100 driver with nettl or ethereal to observe the failure.
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