I'm not sure this will help you but we run multiple VLANs thru a single vswitch. We define our cisco router port to the OSA as a vlan trunk defining the default gateway for each of our zVM linux VLANs. Our vswitch is defined as VLAN unaware so all the VLAN s forward traffic up the trunk to each VLAN default address on the router.
Al Schilla Systems Programmer Enterprise Technology Services Office of Enterprise Technologies phone: 651-201-1216 email: [EMAIL PROTECTED] -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Bhemidhi, Ashwin Sent: Wednesday, April 23, 2008 11:04 AM To: LINUX-390@vm.marist.edu Subject: Re: z/VM Linux OS VLAN tagging 1.a) OSA port has been defined as a trunk b) OSA has been authorized the to use both VLANs on the trunk port c) trunk protocol set to "dot1q" 2. define vswitch vswitche rdev 3600 ethernet vlan 1000 porttype trunk 3. cp set vswitch vswitche grant svml09 porttype trunk vlan 106 730 4. vconfig add eth1 106 vconfig add eth1 730 VLAN 106 is Ethernet frame with no IP (LLC over Ethernet) VLAN 730 is IP. Our problem is when the tagging is done by the Linux guest. There is some wrong with the VLAN 106 frames going out to a Cisco router. The router for some reason is rejecting those frames. This works when we setup 2 different Vswitches using the same OSA trunk port. In this case each vswitch assigns a network interface to the Linux guest machine as an access port with default VLAN 106 and 730 respectively. Basically the vswitches in this case are doing the VLAN ID tagging and the guest sees 2 interfaces eth1 and eth2. Regards, Ashwin -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Alan Altmark Sent: Tuesday, April 22, 2008 10:38 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: z/VM Linux OS VLAN tagging On Tuesday, 04/22/2008 at 05:52 EDT, "Bhemidhi, Ashwin" <[EMAIL PROTECTED]> wrote: > 1) Redhat Linux guest machine running kernel version 2.6.18-1.2747.el5 > under z/VM 5.3 > 2) Using OSA Express 2 with Gigabit port and VLAN enabled at the network > switch with 2 different VLANS. > 3) The 2 VLANs are a) a VLAN for IP network for IP traffic and b) a VLAN > for only Ethernet frames (LLC, no IP). > 4) Configured 1 Layer 2 VSwitch with 2 VLANs and granted the Network > interface as a trunk to the Linux guest machine. 1. Make sure the switch a) has the OSA port defined as a trunk b) has authorized the OSA to use both VLANs on the trunk port c) has set the trunk protocol to "dot1q" 2. DEFINE VSWITCH .... VLAN 1 (or whatever the default VLAN is for the port). By default, the default VLAN (sorry!) is the switch's native VLAN id, which defaults to 1. (extra sorry) In 5.3 you can DEFINE VSWITCH ... VLAN 2 NATIVE 1 if you want guests to have VLAN 2 by default, but keep the native (untagged)VLAN 1. 3. Make sure you grant both VLANs to the guest. Use explicit grants; don't use defaults. 4. Use vconfig to create two VLAN-specific interfaces on eth0 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 ---------------------------------------------------------------------- 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 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
