On Thursday, 02/10/2011 at 04:55 EST, Jose Correa Saldeño <jcor...@evertecinc.com> wrote:
> For backup over the same network without affecting real time traffic, Is it > possible to establish routes to the media server over particular OSAs on the > same VLAN and VSwitch. We currently have two OSAs from the same VSwitch to two > different Cisco switches with the same VLANs. > > For this particular Linux Guest who's real time traffic is being affected by > the concurrent backups, we have it participate in a single VLAN as access mode. No, you cannot choose which OSA to use; the VSWITCH is not a router. If the OSA port utilization is too high, then you need to look at link aggregation port groups (aka "channel bonding" or "virtual channels"). There may be smart functions in the physical switch that will cause it to move certain traffic to certain ports via the link agg. protocols. I don't know. And, if so, I don't know if VM will cooperate in keeping them there or if it will try to re-balance the traffic based on load. (You can define the VSWITCH with LACP turned off.) Perhaps the simplest solution (FVVO "simple") is to create a 2nd VSWITCH with it's own OSAs that plug into the same VLAN. The guest would have two virtual NICs and two IP addresses on the same LAN segment. Their routing tables can be adjusted to have the media server IPs routed over eth1 (say) and everything else over eth0. The switch will ensure that packets headed for the IP addr associated with eth1 will be routed to the "other" VSWITCH OSAs. Hint: Draw what you want to have happen on a piece of paper and take it to your network architects. They can solve this for you, though you may need more hardware to implement their solution. Alan Altmark z/VM and Linux on System z Consultant IBM System Lab Services and Training ibm.com/systems/services/labservices office: 607.429.3323 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/
