I have'nt seen this exact issue. I'd request you to raise this issue as a service request with our connectivity support team, as it requires a look at the logs to check if these link errors show up in the port counters. If the logs come out clean and the issue cannot be addressed, we can then put it across to the engineering team and they could check and confirm if its a known issue or troubleshoot it from their side.
Thanks, we have indeed already involved the vendor of the servers, since the servers are initiating the link reset protocol and the majority of hosts do not show this behaviour. They'll probably bring in a Fibre Channel analyzer to see what's happening, but the reason I posted here was to find out whether someone perhaps recognizes this and hopefully has a quick solution or explanation...
Anyway, I'll post the result of that case here once I have more info, for the sake of the archives.
newwdomi1
8 Posts
0
December 16th, 2010 08:00
LR is sent when a link timeout occurs. And link timeout is detected when R_RDY is not received within E_D_TOV after BB-credit has reached 0.
Then you are running out of credit too fast.
I would check N_Port BB credit. Default is 16 on MDS N_Port.
What is the distance. You need 1 credit on 2 Km at 1 Gbs)
Maybe check the HBA firmware and driver version and EMC recommended settings.
Dominique
Ali_Kaunain
11 Posts
1
August 10th, 2010 19:00
Hi Jurjen,
I have'nt seen this exact issue. I'd request you to raise this issue as a service request with our connectivity support team, as it requires a look at the logs to check if these link errors show up in the port counters. If the logs come out clean and the issue cannot be addressed, we can then put it across to the engineering team and they could check and confirm if its a known issue or troubleshoot it from their side.
Thanks,
Ali
Jurjen_Oskam
56 Posts
0
August 11th, 2010 04:00
Hi,
Thanks, we have indeed already involved the vendor of the servers, since the servers are initiating the link reset protocol and the majority of hosts do not show this behaviour. They'll probably bring in a Fibre Channel analyzer to see what's happening, but the reason I posted here was to find out whether someone perhaps recognizes this and hopefully has a quick solution or explanation...
Anyway, I'll post the result of that case here once I have more info, for the sake of the archives.
Regards,
Jurjen
Ali_Kaunain
11 Posts
0
August 11th, 2010 19:00
Thanks in advance for your efforts Jurjen. That would really help.
Regards,
Ali