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Comments (4)

DemianPH commented Jan 20 2014 Comment Permalink

How does setting up the netaddr attribute work when you have a switch that is only allowing two vlans defined in the virtual bridge adapter? Do I have to put a vlan adapter off of it in this case?

patrickcs commented Apr 22 2013 Comment Permalink

Hi Chris, P.S. My previous comment/follow-up question didn't capture the whole message, so here it is... I have a follow-up question on adding a new virtual ethernet that is VLAN-tagged to an existing SEA with a non-VLAN-tagged virtual ethernet. Currently we are using a SEA FAILOVER configuration, with an etherchannel and virtual ethernet(non VLAN-tagged associated to the SEA on both VIO servers. Now we need to move to a new network with a VLAN-tagged 500 and our main goal is to achieve this without any network outage. Is this possible? Here's the implementation that I'm thinking about but I'm not 100% sure if this can be done without any outage. Current SETUP: SEA FAILOVER with PVID=1 on all VIOS and client lpars, no VLAN-tagging. 1. Add another virtual ethernet on one of the lpars with vlan tag 500. 2. Add another virtual ethernet on the standby VIO server with PVID=88 (non-tagged VLAN), VLAN ID=500. 3. Add the new virtual ethernet to the SEA. This will make 2 virtual ethernets on the existing SEA i.e PVID=1 and PVID=88 or non-tagged VLAN and tagged VLAN 500. 4. Configure the physical network switch for VLAN tagging i.e VLAN 500. 5. Then failover from Primary VIOS to Standby VIOS and test the connectivity. My questions on this: 1. Is that a possible implementation or testing on doing this kind of scenario? 2. I'm not sure if the non-tagged VLAN and tagged VLAN can co-exist on the same SEA or network physical switch?

patrickcs commented Apr 22 2013 Comment Permalink

1. Add another virtual ethernet on one of the lpars with vlan tag 500. 2. Add another virtual ethernet on the standby VIO server with PVID=88 (non-tagged VLAN), VLAN ID=500. 3. Add the new virtual ethernet to the SEA. This will make 2 virtual ethernets on the existing SEA i.e PVID=1 and PVID=88 or non-tagged VLAN and tagged VLAN 500. 4. Configure the physical network switch for VLAN tagging i.e VLAN 500. 5. Then failover from Primary VIOS to Standby VIOS and test the connectivity. My questions on this: 1. Is that a possible implementation or testing on doing this kind of scenario? 2. I'm not sure if the non-tagged VLAN and tagged VLAN can co-exist on the same SEA or network physical switch?

AnthonyEnglish commented Mar 16 2012 Comment Permalink

Another great blog post, Chris. The technical FAQs for real-world situations are just so helpful. One small note regarding this part: "This document (by Anthony English) is also a very useful document relating to VLANs, SEAs and VIOS:" http://www.ibm.com/developerworks/aix/library/au-managevlans/index.html?ca=drs- There's a small correction to that article of mine. When assigning a new set of virtual adapters to an SEA, the command flag for chdev should be -virt_adapters, e.g. chdev -dev ent5 -virt_adapters ent3,ent6 In my original version of the document I had the flag listed as -vadapter instead of -virt_adapters The article on developerWorks is in process of being updated.