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Fibre Channel (SAN)

Occasional Visitor
Posts: 1
Registered: ‎12-21-2009

What performance symptoms might we see due to excessive er_bad_os values%3F

Brocade 5100

portstatsshow 0

stat_wtx               2294114629  4-byte words transmitted

stat_wrx               3319601444  4-byte words received

stat_ftx               1593810037  Frames transmitted

stat_frx               3027852357  Frames received

stat_c2_frx            0           Class 2 frames received

stat_c3_frx            3027852357  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            411228      Time TX Credit Zero (2.5Us ticks)

tim_txcrd_z_vc  0- 3:  0           0           411228      0        

tim_txcrd_z_vc  4- 7:  0           0           0           0        

tim_txcrd_z_vc  8-11:  0           0           0           0        

tim_txcrd_z_vc 12-15:  0           0           0           0        

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             0           Encoding error outside of frames

er_bad_os              1806979604  Invalid ordered set

Valued Contributor
Posts: 559
Registered: ‎03-20-2011

Re: What performance symptoms might we see due to excessive er_bad_os values%3F



most likely, these errors are caused by incorrect fill word setting. if this is the case, you wouldn't have any symptoms and issues. you just have more EMI in the SFP which reduces a bit its service life, i believe. that's it.




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