We have a new P770 that I setup for SEA load sharing. From what I can tell the VID's are shared properly according to entstat (see links below). My VID's are 1 and 2 respectively, VID 1 works fine, however I cannot use VID2 at all. It was failing in SMS mode. Per IBM's direction I did the install using VID1 and then tried to shutdown and change it, however my networking stopped working after reboot.
I am really at a complete loss for what is wrong, I reviewed these two guides Niguels DeveloperWorks Article and this Support Document
Looking for some help hopefully, I have a PMR opened but I am not getting a confident feeling after being told "it won't work in SMS" which sounded like a complete BS answer to me.
My entstat logs...
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5 replies Latest Post - 2013-02-01T16:11:52Z by seroyer
Pinned topic SEA Load Sharing issues
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Updated on 2013-02-01T16:11:52Z at 2013-02-01T16:11:52Z by seroyer
Re: SEA Load Sharing issues2013-01-31T22:21:54Z in response to GlennBrownHi,
If your switch ports are configured in trunk mode with vlan id 1 and vlan id 2 you have to set unsed PVID for each adapter then (in my case i use PVID 999 and PVID 998 they are not use by our network team and reserved for our own use), then this adapters have to be "802.1q compatible adapter" with VID set to 1 for the first one and VID set to 2 for the seconde one
- Adapter 1 : Port Vlan Id = 999, 802.1q checked, Additionnal Vlan Id = 1
- Adapter 2 : Port Vlan Id = 998, 802.1q checked, Additionnal Vlan Id = 2
I definitly don't know how it is possible to setup SEA in sharing mode without using 802.1q compatible adapters.
Re: SEA Load Sharing issues2013-01-31T22:28:00Z in response to GlennBrownAfter re-reading your post I think your switch ports are configured in access mode (set to vlan id 1), with an additionnal vlan id added on it (set to vlan 2), it is possible with Cisco switches. vlan id 1 is working in SMS mode because all packets with vlan id 1 are tagged, vlan id 2 is not working because all packets are untagged and tagging for this vlan must be configured in the lpar, it think adding a vlan adapter in a lpar with vlan id 2 will work.
My advice is to configure your switch ports in a full trunk mode (read my previous post) if you want to access both vlans in SMS mode.
GlennBrown 27000384VT2 PostsACCEPTED ANSWER
Re: SEA Load Sharing issues2013-02-01T15:40:44Z in response to SystemAdminI am thoroughly confused, I was under impression I could split the load between my VIO servers without having to vlan tag on the switch side. Presently we only have one vlan that we use in our Data Center, 10.19.0.0/16 we will eventually have more vlan's as we get into our new extended DC.
Can I load share at the vio side to the same external vlan?
seroyer 120000AD3Y352 PostsACCEPTED ANSWER
Re: SEA Load Sharing issues2013-02-01T16:11:52Z in response to GlennBrownSee this page for some helpful information about the different ways to use SEA for your network configurations.
You cannot split a single VLAN using SEA load sharing. To split a single VLAN, you would have to use NIB in the clients or multiple virtual switches.
What problem are you trying to solve by using SEA load sharing? Too much CPU utilization in the VIOS? Saturating a physical link in a VIOS? VIOS cannot drive the physical link fast enough? etc...
There may be simpler solutions to your problem than trying to change your network architecture.