C3 Tx discards and FRAME LOSS on Brocade switch
Applies to
Brocade Switches
Issue
- Switch port showing lot of C3 Tx discards under errdump.
frames enc crc crc too too bad enc disc link loss loss frjt fbsy c3timeout pcs uncor
tx rx in err g_eof shrt long eof out c3 fail sync sig tx rx err err
352: 40.0m 183.4m 0 0 0 0 0 0 0 639 0 0 0 0 0 605 0 0 0
- Frame loss events observed under errdump along with the above C3 Tx discards:
2022/02/08-11:30:43, [MAPS-1001], 2143, SLOT 1 | FID 128, CRITICAL, CDVL_X, slot11 port32, F-Port 11/32, Condition=ALL_OTHER_F_PORTS(C3TXTO/min>3), Current Value:[C3TXTO, 20 Timeouts], RuleName=defALL_OTHER_F_PORTSC3TXTO_3, Dashboard Category=Port Health. 2022/02/08-11:30:43, [MAPS-1001], 2144, SLOT 1 | FID 128, CRITICAL, CDVL_X, slot11 port32, F-Port 11/32, Condition=ALL_PORTS(DEV_LATENCY_IMPACT==IO_FRAME_LOSS), Current Value:[DEV_LATENCY_IMPACT, IO_FRAME_LOSS, (20 C3TX Timeouts) ], RuleName=defALL_PORTS_IO_FRAME_LOSS_UNQUAR, Dashboard Category=Fabric Performance Impact. 2022/02/08-11:31:43, [MAPS-1001], 2145, SLOT 1 | FID 128, CRITICAL, CDVL_X, slot11 port32, F-Port 11/32, Condition=ALL_OTHER_F_PORTS(C3TXTO/min>3), Current Value:[C3TXTO, 585 Timeouts], RuleName=defALL_OTHER_F_PORTSC3TXTO_3, Dashboard Category=Port Health. 2022/02/08-11:32:43, [MAPS-1004], 2146, SLOT 1 | FID 128, INFO, CDVL_X, slot11 port32, F-Port 11/32, Condition=ALL_PORTS(DEV_LATENCY_IMPACT==IO_LATENCY_CLEAR), Current Value:[DEV_LATENCY_IMPACT, IO_LATENCY_CLEAR], RuleName=defALL_PORTS_IO_LATENCY_CLEAR, Dashboard Category=Fabric Performance Impact