A OSD chpid can handle 240 devices max(I Believe) Ususally you define 239 OSA devides and 1 OSD device to use with OSA/SF
Example: CHPID PATH=(0B),PARTITION=((S01),(S01)),TYPE=OSD CNTLUNIT CUNUMBR=1100,PATH=(0B),UNIT=OSA IODEVICE ADDRESS=(1000,239),CUNUMBR=(1000),UNIT=OSA IODEVICE ADDRESS=(10FE,001),CUNUMBR=(1000),UNIT=OSAD ----- Original Message ----- From: "Post, Mark K" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, August 07, 2003 1:44 PM Subject: Re: OSA, VLAN and Linux guests > Matt, > > Each card can handle up to 256? (I think) device numbers. Define them, then > assign them to each Linux guest like this (assuming a device number range of > 0F00-F0F): > Guest 1: 0F00,0F01,0F0A > Guest 2: 0F02,0F03,0F0B > Guest 3: 0F04,0F05,0F0C > Guest 4: 0F06,0F07,0F0D > Guest 5: 0F08,0F09,0F0E > > Or something along those lines. You need to do it this way to avoid > "wasting" device numbers, since the device address for each guest must start > on an even address boundary. Now, the _virtual_ addresses that your guests > see can all be the same, for every guest. Gives a certain uniformity to > system setup. So each guest could have it's OSA addresses be > 0F00,0F01,0F02. > > > Mark Post > > -----Original Message----- > From: Matt Lashley/SCO [mailto:[EMAIL PROTECTED] > Sent: Thursday, August 07, 2003 12:42 PM > To: [EMAIL PROTECTED] > Subject: OSA, VLAN and Linux guests > > > I'm studying the picture on page 161 of the OSA-Express Implementation > Guide > http://publib-b.boulder.ibm.com/Redbooks.nsf/9445fa5b416f6e32852569ae006bb65 > f/78796993019dfafe85256c38006f1d4e?OpenDocument&Highlight=0,osa > > > Right now I have a two levels of routers/firewalls in out penguin farm. > One single "master" router on the top level and four second level > routers/firewalls for each of the guest lans. The master level router has > the OSA dedicated to it via the VM user directory. I want to get rid of > the master level router because it does burn quite a few cycles handling > all the traffic and with the coming virtual switches in VM 4.4 (yahoo!) I > think a redesign and a re-think of our external network interface is > needed. > > So, page 161 shows a picture of four Linux machines connected to a single > OSA (port). Since the OSA supports trunking and zLinux can handle it as > well, I want to set up VLANs - like in the picture. > > How do I share the OSA between four (or more) Linux guest images? Are we > talking IODF/IOCDS changes? Creating more CHIPDs/devices to be deicated to > each Linux? When I read the text, the implementation doesn't jump out at > me. > > Thanks, > > Matt Lashley > Idaho State Controller's Office
