I'm not sure it was documented but when we installed our z15 processor,
10G OSA cards the IBM reseller told us these cards do not negotiate
down, it was an action item we needed to verify with our switch folks to
see if they can support 10G cards
Carmern
On 8/17/2022 1:22 PM, Jake Anderson wrote:
I just trusted the network guy that inspite of setting auto negotiate it
didn't worked.
Not sure if IBM has documented this anywhere about the incompatibility with
10g - 1g
On Wed, Aug 17, 2022, 10:00 PM Tom Brennan <[email protected]>
wrote:
So just for me, you're saying it's a 10G card, and like IBM doc says 10G
cards won't negotiate. So if the switch is max 1G that seems to explain
the problem.
But the solution is interesting. IBM says the customer should never
swap SFP's in the I/O cards. Sounds like you did and it fixed the
problem, which is really why I'm asking because I've seen other
customers swap SFP's and cause more problems than it's worth.
Either way, glad to hear it's working now.
On 8/16/2022 8:56 PM, Jake Anderson wrote:
So I did wrap plug test to ensure the ports were fine and they were good
So after finally replacing the 10g SFP with 1G SFP from z14 fixed this
issue. Unfortunately the auto negotiate didn't helped.
On Wed, Aug 17, 2022, 12:42 AM Mark Zelden <[email protected]> wrote:
Jumping in at the middle, so I apologize. I probably missed something.
Is this something that just stopped working or isn't working with a CPU
upgrade? In a recent upgrade
I did we had some OSA OSE ports that wouldn't activate and that is due
to
the 1G speed but after
talking to the LAN / WAN network team I found the switch was hard coded
at
100M. No one knows
why... lost history from z9, z196, z12, z13 upgrades.. Maybe printers or
something had to have that
long ago. (OSA OSE ports support SNA and TCPIP for those not in the
know).
Anyway, changing it to auto negotiate on the switch fixed it. I did have
to disable / re-enable the
port on the HMC for it to connect, so it wasn't just a switch change to
fix it. Luckily we ran into
the problem on our DR box upgrade first where it wasn't a real problem
and
we knew what to do for 3 CPCs
in production (2 OSE ports on each) and actually swapped them all to 1G
prior to the z15 upgrades.
Now onto the next challenge in that z/OS 2.6 will not support the SNA
connections currently in use on
the OSEs. Turns out none are really used any more except on 2 LPARs to
connect to
AIX machines and those connections need to be migrated to Enterprise
Extender. We have a little
time though. :)
Best Regards,
Mark
--
Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS
ITIL v3 Foundation Certified
mailto:[email protected]
Mark's MVS Utilities: http://www.mzelden.com/mvsutil.html
Systems Programming expert at
http://search390.techtarget.com/ateExperts/
On Mon, 15 Aug 2022 23:14:49 -0700, Tom Brennan <
[email protected]> wrote:
Is it a 10G (1 port) or 1G (2 port) OSA card? 10G cards won't
negotiate
speed, from what I've seen.
On 8/15/2022 10:21 PM, Jake Anderson wrote:
Hi
The OSA port is connected with working cable LC-LC MM fibre to the 1g
switch. From the Cisco switch it has been set as auto negotiate to
yes.
Still from the mainframe the port doesn't show up the LED indication
at
all. I tried toggling standby/online but still no luck. Ran port
diagnostics too with no error.
Not sure where to look. Has anyone faced a similar issue and have any
idea
on what needs to be done?
Jake
On Sat, Aug 13, 2022, 1:57 AM Radoslaw Skorupka <
[email protected]
wrote:
What's your question?
Link monitor means no physical connection to the switch, which means
you
card will not work.
Reason? A lot of, including broken cable, improper cable (MM instead
of
SM and vice versa), bad connection (Tx to Tx...), disabled port on
the
switch...
--
Radoslaw Skorupka
Lodz, Poland
W dniu 10.08.2022 o 07:19, Jake Anderson pisze:
Hello
Cross posted
I apologize for my ignorance.
I was looking for the status of one of our OSA card under OSA
advanced
facilities under HMC. For one of their PCHPID belonging to OSA shows
the
port status as 'LINK MONITOR'
When I checked with my network team if their switch sees the MAC
address
of
my OSA port but they don't see it.
From the physical cabling perspective what do I need to do?
Z14 zr1
Jake
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