We ran into this issue on a multi-homed Intel Linux box running Samba months about a year ago when we upgraded the server. In our case, we had to set the value for rp_filter to zero. You can read more about this change here: http://ifup.org/2011/02/03/reverse-path-filter-rp_filter-by-example/
Aria -----Original Message----- From: Linux on 390 Port [mailto:[email protected]] On Behalf Of Michael O'Reilly Sent: Friday, April 13, 2012 4:28 PM To: [email protected] Subject: Re: Linux router Martha, If your SLES11 is SP1 and if, when you receive a ping, you see the RX count tick up, while the TX count remains the same, you might want to consider: Applying SLES 11 SP 1 Causing Communication Issues at 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 Martha McConaghy <[email protected] du> To Sent by: Linux on [email protected], 390 Port cc <[email protected] ist.edu> Subject Linux router 04/13/2012 11:52 AM Please respond to Linux on 390 Port <[email protected] ist.edu> I've been working on setting up a zLinux (SLES 11) system to act as a router between two networks (its on an ensemble, but that doesn't really matter at the moment). Everything is set up within Linux (yes, I have IP routing turned on) and the real network has been updated to have a static route to this system. Pings are successful to the main IP address on the adapter (on a vswitch connected to a 1000BaseT OSA). Pings are also successful from the other adapter as well. However, when we try to ping the adapter on the far side of the router from the network, the packets make it as far as the OSA and then drop. Our TCPIP routing guru, Alan Altmark, reminded me that the PRIROUTER setting has to be turned on in the vswitch for the OSA to recognize that it will be routing other traffic through it. I've got that set now, but am still seeing the problem. If this were a VM TCPIP machine, I would have to also set PRIROUTER on the DEVICE statement to get this to work (I'm tempted to switch over to this if I can't get it working). Is there an equivelent setting for qeth? I've been googling around, but haven't found anything. Martha ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] 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/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] 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/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] 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/
