On Tuesday, 05/08/2007 at 01:36 AST, Gene Walters <[EMAIL PROTECTED]> wrote: > Hi All, > > I know this is a broad question, but I am trying to understand some > things. > > We currently are using CTC connections for our network access to our > Linux Instances running under VM. We were told that CTC's were doing it > the hard way. So I am trying to figure out what the other way is. > > We have Z/VM 5.1 running on an IFL and an OSA-Express card. What > should we be using instead of CTC's for network connection, VGuest, > VSwitch VLAN? I'm confused as to what each actually does. > > Any help would be appreciated.
1. Guest LAN. A simulated LAN segment contained entirely within CP. Connections to the Outside are done by using a "virtual router". That is, a virtual machine that connects both to the Outside and to the Guest LAN. Since it is a separate LAN segment, it is its own subnet. 2. Virtual Switch (VSWITCH). A simulated LAN segment that is BRIDGED to the Outside by CP (no virtual router). Because it is BRIDGED to the Outside, not ROUTED, it is NOT a separate LAN segment and so it part of the subnet the associated OSA is connectd to. It is possible for a single VSWITCH to carry traffic for two ore more LAN segments at the same time, if needed, by taking advantage of IEEE VLANs. Alan Altmark z/VM Development IBM Endicott ---------------------------------------------------------------------- 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
