Alan, Thanks for the tip. I was able to at last get this working with a VM TCPIP machine for now. I will continue to see if I can get it working with Linux too. Unfortunately, layer 2 isn't possible on our network right now. The Cisco switches are too old.
Martha On Sun, 15 Apr 2012 09:28:20 -0400 Alan Altmark said: >On Friday, 04/13/2012 at 03:07 EDT, Martha McConaghy <u...@vm.marist.edu> >wrote: >> 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. > >Yes. Look for "primary_router" in the Linux Device Driver book. > ># echo primary_router > /sys/bus/ccwgroup/drivers/qeth/0.0.<addr>/route4 >(Similarly for route6.) > >Sorry I forgot to remind you of the need for primary router status in the >guest, too. This is why I don't like Layer 3 OSA. Too much to remember. >:-) > >Since each guest has its own "dedicated" virtual NIC, all guests can have >primary_router status, but keep in mind that that all incoming packets >with unrecognized (by CP) destinations IPs are copied to all guests with >primary or active secondary router status. (The VSWITCH doesn't have >"learning mode" and doesn't maintaing a forwarding database.) > >Alan Altmark > >Senior Managing z/VM and Linux Consultant >IBM System Lab Services and Training >ibm.com/systems/services/labservices >office: 607.429.3323 >mobile; 607.321.7556 >alan_altm...@us.ibm.com >IBM Endicott > >---------------------------------------------------------------------- >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/ ---------------------------------------------------------------------- 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/
