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02-25-2004 08:47 AM
02-25-2004 08:47 AM
Fibre Switch ISL's
Thanks Tom
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02-25-2004 04:20 PM
02-25-2004 04:20 PM
Re: Fibre Switch ISL's
You did not mention what type of switches you are using, however I will assume they are something like the 16EL or 2/16EL's that I have.
Have you checked or configured the domain ID for both switches. They are supposed to be unique in a fabric, and if the switches are out-of-the-box, they may auto-configure. It is possible that they may not, and you have two switches that have the same domain ID and are not changing. You set these via the configure command. Manual states that the lowest ID is the master, however I do not see that in my environment, although I have mixed switch types so there may be another precedent taking place.
Also ensure that the general switch parameters are the same. If you are able to, you could clear the config's on both switches and reconnect the ISL. This may then auto-detect better.
Hopefully this helps.
Dean.
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02-25-2004 06:09 PM
02-25-2004 06:09 PM
Re: Fibre Switch ISL's
the switch with the lowest WWN becomes the principal. I have read somewhere (sorry, don't recall) that switches should not be set to 'factory defaults' because they will loose the HP-specific parameters. Unfortunately they didn't say what those parameters were and I have not yet tried to obtain that information.
As you say correctly there might be a problem with incompatible switch parameters. Recent 2 GBit switches have the 'core PID format' enabled. HP recommends to migrate to this setting.
I will attach a short .TXT file that shows how to turn it on. It is my experience that after the bit is turned on a mix of WWN and port-based zonig stops working, so check this in advance.
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02-25-2004 06:22 PM
02-25-2004 06:22 PM
Re: Fibre Switch ISL's
You are trying to make a circle from all the switches?
If you have EL switches there is a possibility that there is licensed only 1 E-port per switch...
So can you send me the information what switch types are you using and how you tried to interconnect them together?
BR
Tarmo Linnamägi
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02-26-2004 01:42 AM
02-26-2004 01:42 AM
Re: Fibre Switch ISL's
BTW I have tried the ports in auto and 1G modes to see if they connect.
Tom
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02-26-2004 02:14 AM
02-26-2004 02:14 AM
Re: Fibre Switch ISL's
I was unable to see the txt file can you point to a manual with the procedure?
Tom
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02-26-2004 04:43 AM
02-26-2004 04:43 AM
Re: Fibre Switch ISL's
OK, I will include it into this text. You will see that all space characters will get compressed, but it should still be helpful. I don't recall in which of the many manuals this is written, I am just glad I have documented it on my own!
-----
s2:admin> switchdisable
s2:admin> 0x10249c60 (tThad): Jan 18 10:45:21
WARNING FW-STATUS_SWITCH, 3, Switch status changed from HEALTHY/OK to
Marginal/Warning
s2:admin> configure
Configure...
Fabric parameters (yes, y, no, n): y
Domain: (1..239) <== change domain here
BB credit: (1..27)
R_A_TOV: (4000..120000)
E_D_TOV: (1000..5000)
Data field size: (256..2112)
Sequence Level Switching: (0..1)
Disable Device Probing: (0..1)
Suppress Class F Traffic: (0..1)
SYNC IO mode: (0..1)
VC Encoded Address Mode: (0..1)
Core Switch PID Format: (0..1) 1 <== 1 enables core PID format
Per-frame Route Priority: (0..1)
Long Distance Fabric: (0..1)
Virtual Channel parameters (yes, y, no, n):
Switch Operating Mode (yes, y, no, n):
Zoning Operation parameters (yes, y, no, n):
RSCN Transmission Mode (yes, y, no, n):
NS Operation Parameters (yes, y, no, n):
Arbitrated Loop parameters (yes, y, no, n):
System services (yes, y, no, n):
Portlog events enable (yes, y, no, n):
Committing configuration...done.
s2:admin>
s2:admin> switchenable
Command in progress . . . . . . . . done
s2:admin>
-----
If the 'core PID fomat' dialog does not come up I am afraid a firmware update is necessary, but:
do I understand you correctly what you try to link two 1 GBit switches where _both_ have the format set to 0?
Do you, by chance, have an incompatible zoning setup defined on both switches? Does a 'switchShow' tell the reason for the segmentation? What happens when you pull all ISLs between the non-working pair and reconnect just one cable. Do any helpful messages come up?
I hope this helps you any further.
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03-04-2004 09:00 AM
03-04-2004 09:00 AM
Re: Fibre Switch ISL's
Thanks Again everyone
Tom
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03-07-2004 06:47 AM
03-07-2004 06:47 AM
Re: Fibre Switch ISL's
I cannot really check this, but it sounds to me like one of the 1 GBit switches was configured to be compatible with the first generation of fibre channel switches (those had a green display).
I have read somewhere that one should not do a 'configDefault' has this would invalidate some settings for Compaq/HP fabrics. I am not sure if that warning applies to the family of 2 GBit switches only and not the 1 GBit family - I haven't found time to investigate myself, sorry.
BTW, I have tried to download my attachment again and it worked this time.
Strange...
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03-08-2004 12:33 AM
03-08-2004 12:33 AM
Re: Fibre Switch ISL's
What I was able to understand for other sources that the configDefault does not change the HP fabric specific settings there is another command (maybe undocumented?) The configDeafult retains a lot of the pertinate info WWN, MAC's, IP's, License Keys, system Name etc.... So so far all has been good. Also just for info the switch with the bad parameter was a new 2GB switch.
Thanks for your help,
Tom