× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.


  1.  Home
  2. MIDRANGE-L
  3. October 2018

RE: How to configure a 2nd Enthernet port to a 2nd Eternet Switch for Load balancing/fail over

Great information Roberto, I've done those myself, however I don't think
Paul has SR-IOV capable Ethernet cards, nor is VIOS in the mix.

Good point about the switches supporting vLAG. I guess I forget to ask
about that since 99% of the switches I tend to work with do support it.


--
Jim Oberholtzer
Agile Technology Architects


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Roberto José Etcheverry Romero
Sent: Tuesday, October 16, 2018 3:56 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: Re: How to configure a 2nd Enthernet port to a 2nd Eternet Switch
for Load balancing/fail over

Link Aggregation will work with a 2nd switch IF the switches support vLAG
(virtual Link Aggregation Group). There are a lot of enterprise switches
that do not stack but support vLAG. I'm implementing a couple of P9s with
10G aggregation using SR-IOV on the cards and 2 switches on the switch side.
Bypassing VIOS altogether to avoid SEA. SR-IOV allows me to carve % of each
interface for each LPAR and the LAG support on IBM i allows me to use those
ports without touching the final line nor IP address.
A more sedate approach is to have a fully redundant VIOS with SEA in HA
mode, that works as well. only 1 or 2 ping packages lost during the
transition.

Best Regards,

Roberto

On Tue, Oct 16, 2018 at 3:46 PM Steinmetz, Paul <PSteinmetz@xxxxxxxxxx>
wrote:

Jim,

The solution you sent in the first link appears the simplest/easiest.
Ethernet Link Aggregation - Link Aggregation binds several full-duplex
Ethernet links running at the same speed together into one logical
link with a single Media Access Control (MAC) address.
One interface, One line description with multiple resources.

I'm not seeing that solution as part of the 2nd link starting at page 25.
Is this a "newer" solution, possibly not included with some of the
older docs.

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Jim Oberholtzer
Sent: Tuesday, October 16, 2018 2:31 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: How to configure a 2nd Enthernet port to a 2nd Eternet
Switch for Load balancing/fail over

Rob:

VIOS is by far and away the best way to virtualize Ethernet and
provide for failover/load balancing. That said I don't think Paul has
that environment.


Paul:

As someone pointed out VIPA might fit the situation as well. Here's a
document that explains all:

https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_72/rzajw/rzajwpd
f.pdf

Start on about page 25. It'll talk about workload balancing and then
next scenario is failover.

I find VIPA to be confusing to most folks, particularly the non IBM i
network administrator that will most likely understand what your
trying to do but then not be helpful in the end since it's not
Microsoft/Cisco.


--
Jim Oberholtzer
Agile Technology Architects


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Rob Berendt
Sent: Tuesday, October 16, 2018 1:21 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: RE: How to configure a 2nd Enthernet port to a 2nd Eternet
Switch for Load balancing/fail over

We use two VIOS lpars. One controls one ethernet card and the other
controls the other. They both go to different switches.
I'm so damned confident of this solution that I've upgraded VIOS
during the middle of the day. Of course when you use the same
solution on three Power systems and you test it out on the sandbox machine
first it helps.


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600
Mail
to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: "Steinmetz, Paul" <PSteinmetz@xxxxxxxxxx>
To: "'Midrange Systems Technical Discussion'"
<midrange-l@xxxxxxxxxxxx>
Date: 10/16/2018 02:13 PM
Subject: RE: How to configure a 2nd Enthernet port to a 2nd Eternet
Switch for Load balancing/fail over
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



Jim,


https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_73/rzajy/rzaj
ylinka
gg.htm
<https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_73/rzajy/rza
jylinkagg.htm>


Thanks for that link.
The diagram was very helpful.
So only one interface and line description are used.
No changes to the interface, only to the line description.

AGGPCY (Aggregate policy) would be set to either *ETHCHL or *LNKAGG
(Not sure which method at this point) AGGRSCL (Aggregated resource
list) would contain the resource names CMN01, CMN02.

One key question.
The link prerequisites states that this solution is only valid
everything is going to one/same switch.
" All of the ports must be connected to the same link partner (switch)."
My intended solution is going to a 2nd switch.

Is there a different configuration if a 2nd switch is involved?

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Jim Oberholtzer
Sent: Tuesday, October 16, 2018 12:07 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: How to configure a 2nd Enthernet port to a 2nd Eternet
Switch for Load balancing/fail over


https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_73/rzajy/rzaj
ylinka
gg.htm
<https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_73/rzajy/rza
jylinkagg.htm>






--
Jim Oberholtzer
Agile Technology Architects


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Steinmetz, Paul
Sent: Tuesday, October 16, 2018 10:54 AM
To: 'Midrange Systems Technical Discussion' <midrange-l@xxxxxxxxxxxx>
Subject: How to configure a 2nd Enthernet port to a 2nd Eternet Switch
for Load balancing/fail over

I'm looking for a resource (pdf/link) on how to configure a 2nd
Ethernet port to a 2nd Ethernet Switch for Load balancing/fail over.
The goal is to provide a higher level of redundancy for if either the
5899 PCI port or the Ethernet switch would fail.
The 2nd port would be connected to a 2nd switch.

I need the details for both the Interface and line description, and
any other TCP/IP config changes (default routes, static routes, etc),
if needed.

Thank You
_____
Paul Steinmetz
IBM i Systems Administrator

Pencor Services, Inc.
462 Delaware Ave
Palmerton Pa 18071

610-826-9117 work
610-826-9188 fax
610-349-0913 cell
610-377-6012 home

psteinmetz@xxxxxxxxxx
http://www.pencor.com/


--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
a moment to review the archives at
https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related
questions.

Help support midrange.com by shopping at amazon.com with our affiliate
link:
http://amzn.to/2dEadiD

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
a moment to review the archives at
https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related
questions.

Help support midrange.com by shopping at amazon.com with our affiliate
link: http://amzn.to/2dEadiD
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
a moment to review the archives at
https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related
questions.

Help support midrange.com by shopping at amazon.com with our affiliate
link: http://amzn.to/2dEadiD


--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
a moment to review the archives at
https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related
questions.

Help support midrange.com by shopping at amazon.com with our affiliate
link:
http://amzn.to/2dEadiD

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
a moment to review the archives at
https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related
questions.

Help support midrange.com by shopping at amazon.com with our affiliate
link: http://amzn.to/2dEadiD
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe,
unsubscribe, or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take
a moment to review the archives at
https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related
questions.

Help support midrange.com by shopping at amazon.com with our affiliate
link: http://amzn.to/2dEadiD

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe,
or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a
moment to review the archives at https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related questions.

Help support midrange.com by shopping at amazon.com with our affiliate link:
http://amzn.to/2dEadiD


As an Amazon Associate we earn from qualifying purchases.

This thread ...
Replies:
Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.