Maybe, net.ipv4.conf.all.rp_filter was set to 1. I took one of my SLES11-SP1 guest and set it to 2. It now pings from z/VM. When I set it back to 1, it still pings. When I set it to 0, it still pings. I went to a different SLES11 guest. It did not ping, but once I set net.ipv4.conf.all.rp_filter to 0, it pinged fine. I returned it to 1 and it still pings. I am confused. Why is it pinging all of a sudden or is it just the nature of the beast. Should I set it to 2 globally?
Peter From: "Michael O'Reilly" <mik...@us.ibm.com> To: LINUX-390@vm.marist.edu Date: 10/18/2011 07:24 PM Subject: Re: Cannot Ping SLES11 guests from z/VM through hypersockets Sent by: Linux on 390 Port <LINUX-390@vm.marist.edu> Peter, Are you by any chance hitting: "Applying SLES 11 SP 1 Causing Communication Issues" http://www.novell.com/support/search.do?cmd=displayKC&docType=kc&externalId=7007649&sliceId=1&docTypeID=DT_TID_1_1 Mike O'Reilly IBM Linux Change Team "Peter E. Abresch Jr. - at Pepco" <peabresch@pepco. To com> LINUX-390@vm.marist.edu Sent by: Linux on cc 390 Port <linux-...@vm.mar Subject ist.edu> Re: Cannot Ping SLES11 guests from z/VM through hypersockets 10/18/2011 04:04 PM Please respond to Linux on 390 Port <linux-...@vm.mar ist.edu> Yes, PTF shows applied UK46027: VMFSRV1226I TCPIP (5VMTCP40%TCPIP) APAR PK80882 (PTF UK46027) status: VMFSRV1226I RECEIVED 06/17/10 07:50:18 VMFSRV1226I APPLIED 10/06/09 20:16:49 VMFSRV1226I BUILT 06/17/10 07:51:47 VMFSRV1226I PUT2PROD 06/17/10 09:18:43 VMFSRV2760I SERVICE processing completed successfully From: Mark Post <mp...@novell.com> To: LINUX-390@vm.marist.edu Date: 10/18/2011 06:53 PM Subject: Re: Cannot Ping SLES11 guests from z/VM through hypersockets Sent by: Linux on 390 Port <LINUX-390@vm.marist.edu> >>> On 10/18/2011 at 06:42 PM, "Peter E. Abresch Jr. - at Pepco" <peabre...@pepco.com> wrote: > We are running z/VM Version 5 Release 4.0, service level 1001 (64-bit). We > can ping all of our SLES10 guests through our real hypersockets from z/VM. > however we cannot ping our SLES11 guests from z/VM through our real > hypersockets. All our Linux guests (SLES10 and SLES11) can ping each other > fine through hypersockets. z/OS can ping SLES10 and SLES11 guests through > hypersockets fine. SLES10 and SLES11 Linux guest can ping everything fine > through hypersockets. The only problem is pinging SLES11 guests from z/VM. > Has anyone else experienced this problem or have any suggestions? Do you have the fix for z/VM APAR PK80882 installed? Mark Post ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Pepco Holdings, Inc. or its affiliates ("PHI"). This Email is intended solely for the use of the person(s) to which it is addressed. If you are not an intended recipient, or the employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. 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