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09517 - 1Gig Ethernet
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1Gig Ethernet
FYI-The latest card is the 57xx series. This card requires V5R2 OS
level.
The 57xx series has better overall performance characteristics than
the 2743 (the original GB ethernet card), but in some instances is
the same.
I wouldn't go so far as to say that either card is faster than
Opticonnect.
Ron
Opinions here are my own, and do not speak for IBM.
--- In DoNotReply@consolut.eu, "Gueldenpfennig, Volker"
<volker.gueldenpfennigZs...> wrote:
> Tja Udo,
>
> what shall I answer now ?
>
> First:
> You want to use 2 GB Ethernet cards for the appl-servers. You can
definentely do this but I don't see a real advantage to 1 GB card and
1 100MB card. I don't know the price difference here. So, you should
judge on this yourself. Perhaps you try to find out, who told you the
need for the client site
> for 1GB Ethernet.
>
> The DB-Communication from the APPL-Server to the DB-Server via GB
Ethernet depends a lot on the workload you create. Sometimes it is
good and some other jobs (especially DB-intensive ones) are factor 2-
4 slower.
> IBM doesn't tell you, that GB Ethernet is faster than Opticonnect
and they replaced the GB Ethernet card with V5R2 with a new one,
because of some special performance problems.
>
> I think, you should decide what way to go.
> (I wouldn't do the change on V5R1 with the old GB Ethernet card)
>
> Sorry,
>
> Volker
>
> -----Original Message-----
> From: Udo Wiedel [mailto:uwiedelZl...]
> Sent: Freitag, 28. Februar 2003 18:03
> To: DoNotReply@consolut.eu
> Subject: RE: 1Gig Ethernet
>
>
> Hello Volker.
>
> Can you be a little more specific as to known problems that you
are aware that have been encountered by shops attempting to use 1 Gb
Ethernet to replace Opti. What we are looking at doing this with 2
Application servers 820's each with 2 GB cards. One for the Opti
replacement, other for user
> logon. At the DB level 1 BG Ethernet card just for data, 100m for
Basis logon to that box.
>
> Now as I see from Doreen response She has this working for 3
years?
>
> Doreen what SAP Release and OS/400 are you on? What kind of
traffic load do you have Light 50 or less concurrent users, Medium
around 200, Heavy 400-500>.
>
> Big thanks to JJ, Doreen and Volker for information provided.
>
> Udo
>
> -----Original Message-----
> From: Gueldenpfennig, Volker [mailto:volker.gueldenpfennigZs...]
> Sent: Friday, February 28, 2003 12:03 AM
> To: 'DoNotReply@consolut.eu'
> Cc: Udo Wiedel
> Subject: RE: 1Gig Ethernet
>
>
> Hi Udo,
>
> I can fully agree with Doreen and JJ.
>
> It is no problem at all to divert the traffic. It is just a bit
configuration.
> But, as opticonnect is slightly faster than GB Ethernet, I wouldn't
invest money itno this. If you really want to go this way, you should
ask IBM for the new GB Ethernet Card, that requires V5R2. This one is
supposed to have no longer the known bottleneck of the old one. But,
I definetely wouldn't
> do it on V5R1.
>
> Before you go to V5R2, you should ask IBM if all performance
problems for your environment are fixed.
>
> Regards
>
> Volker
>
> -----Original Message-----
> From: Udo Wiedel [mailto:uwiedelZl...]
> Sent: Donnerstag, 27. Februar 2003 21:46
> To: DoNotReply@consolut.eu
> Subject: RE: 1Gig Ethernet
>
>
> Hello Groupies.
>
> Layout 3 Tier V5R1M0 840 DB, 820 App servers. 4.6c EBCDIC.
>
> Plans call for here at LF. To get rid of opticonnect and use 1
Gig Ethernet card to replace, to be precise 2 1GB cards in each App
server ( we have 2 app servers). The part that I'm not clear on and
maybe some one out there in the wide, wide world has done this or can
shed some light on this.
>
> Here it comes. How, or can I select which card is used for normal
communication, and assign the second one as a replacement for the
Opticonnect path.
>
> Hope that this makes sense.
>
> Thanks Udo
>
>
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