HPE EVA Storage

Port stats with errors on 4/16 SAN switches

 
Wieslaw
Advisor

Port stats with errors on 4/16 SAN switches

Hi all,
when checking port stats on my switches (4/16)I found some errors:
stat_wtx 1822645600 4-byte words transmitted
stat_wrx 998955104 4-byte words received
stat_ftx 1922234055 Frames transmitted
stat_frx 1147652536 Frames received
stat_c2_frx 0 Class 2 frames received
stat_c3_frx 1147652536 Class 3 frames received
stat_lc_rx 0 Link control frames received
stat_mc_rx 0 Multicast frames received
stat_mc_to 0 Multicast timeouts
stat_mc_tx 0 Multicast frames transmitted
tim_rdy_pri 0 Time R_RDY high priority
tim_txcrd_z 35295 Time BB credit zero
er_enc_in 0 Encoding errors inside of frames
er_crc 0 Frames with CRC errors
er_trunc 0 Frames shorter than minimum
er_toolong 0 Frames longer than maximum
er_bad_eof 0 Frames with bad end-of-frame
er_enc_out 1188264 Encoding error outside of frames
er_bad_os 1004602 Invalid ordered set

Can anybody tell what's the possible cause of these errors and if I should be concerned.
There are no ISL's involved.
I'd appreciate any help
Wieslaw
5 REPLIES 5
Uwe Zessin
Honored Contributor

Re: Port stats with errors on 4/16 SAN switches

Looks like a QLogic adapter on this switch port which ran without firmware being loaded for some time. On some adapters it is possible to move a jumper and put the laser under explicit firmware control.
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Wieslaw
Advisor

Re: Port stats with errors on 4/16 SAN switches

Uwe,
thanks for the reply.
These statistics were taken from a test setup running for a few days.There were no hba's without firmware connected.
Stats were cleared a few days before checking.
I've especially high tim_txcrd_z (Time BB credit zero)reading for ports were EVA array is connected. Switches run at 5.3.0 firmware.
I'm going to upgrade them right now. Hope this will help..
Wieslaw
Uwe Zessin
Honored Contributor

Re: Port stats with errors on 4/16 SAN switches

Yes, you are doing really good by upgrading Fabric OS 5.3.0 to something higher...

By the way:
when I wrote 'without firmware being loaded', I meant the software that is usually loaded into the on-board RISC processor by the operating system's device driver - I was not talking about the "option ROM" which is permanently stored on the adapter (although, I admit, that in-house we call it 'firmware', too).
.
Wieslaw
Advisor

Re: Port stats with errors on 4/16 SAN switches

Hi,
Firmware update to 5.3.1a didn't help.
I can still see tim_txcrd_z,er_enc_out,er_bad_os errors.
I don't know what to do about them.
I understand 'Invalid ordered set' errors but the other two are mystery to me.
Can anybody tell me what causes them?
Thank you,
Wieslaw
Gilbert Plouffe
Advisor

Re: Port stats with errors on 4/16 SAN switches

tim_txcrd_z means that the buffer credit availability was 0 for a amount of time (2.5u). This counter do not show the real fact in you case because the Tim_rdy_pri is 0. it only show that the device connected to that port is busy tx/rx. As for the enc and os error this is usaly link to physical layer. FC cable, sfp,