Hi, Steven. Use tcpdump to sniff the connection attempt. This may provide clues to what is happening. In the past, I've found "circular routing" problems this way. WireShark can help analyze the tcpdump output file.
Good luck! ________________________________ Alex Paschal Storage Solutions Engineer MSI Systems Integrators ________________________________ Your Business. Better. -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[email protected]] On Behalf Of Steven Harris Sent: Monday, February 09, 2009 3:18 AM To: [email protected] Subject: [ADSM-L] AIX networking issue Hi All I have an issue that seems related to networking somehow. New site, P595 AIX 5.3 with many LPARs. Most LPARs run SAP and TDP for ERP Oracle. TSM Client is at 5.5.1.0 TSM server. is 5.5.1.0. Both client and server are in different LPARs on the same P595. SAP instance has 3 interfaces, one for the application, one for management purposes and one for backups. These are all virtual networks using the VIO server lpar. The client and server have backup addresses on the same subnet, and TCPADDRESS is set in the dsm.sys stanzas to force the backup down the backup network. Backups have been working, but now fail. Both ba client and TDP start getting tcp/ip failure rc -50 when trying to initiate the backup session. Client can ping server. If I ping the client from the server, then the tcp/ip failure goes away and I can get a good backup, but then the next day's backup fails. I'm thinking this has to be an AIX problem because the backup packets should never get out of the virtual backup lan. Thus it can't be firewall or external routing. The default gateways look correct and so the packets should be going out of the right interface and finding their target, but obviously are not. The lpars are all built from the same image and several of them are exhibiting the same issue. The ping fix always works, temporarily. Any ideas on how this can be fixed permanently, or debugged, will be gratefully received. Regards Steve Steven Harris, TSM Admin Sydney Australia This message (including any attachments) is intended only for the use of the individual or entity to which it is addressed and may contain information that is non-public, proprietary, privileged, confidential, and exempt from disclosure under applicable law or may constitute as attorney work product. If you are not the intended recipient, you are hereby notified that any use, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, notify us immediately by telephone and (i) destroy this message if a facsimile or (ii) delete this message immediately if this is an electronic communication. Thank you.
