Brocade switch port flaps intermittently
Applies to
- All Brocade switch hardware platforms
- All Brocade Fabric Operating System (FOS) firmware levels
Issue
- NPIV, ISL or Host port periodically logs out of the fabric and paths are lost
- Errdump reports port flapping:
- Increasing port errors
porterrshow
- Error dump:
errdump -a
2022/08/23-13:54:52, [MAPS-2030], 234274, SLOT 2 | FID 128, WARNING, switch, slot4 port21, F-Port 4/21, Condition=ALL_TARGET_PORTS(STATE_CHG/min>3), Current Value:[STATE_CHG, 4], RuleName=defALL_TARGET_PORTSSTATE_CHG_3, Dashboard Category=Port Health.
- Fabric log :
fabriclog -s
Switch 0; Fri Jun 24 00:33:26 2022 IST (GMT+5:30)
00:33:26.734531 SCN Port Offline;rsn=0x3,g=0x366 A2,P0 A2,P0 50 NA
00:33:26.734541 *Removing all nodes from port A2,P0 A2,P0 50 NA
00:33:27.838967 SCN LR_PORT(0);g=0x366 A2,P0 A2,P0 50 NA
00:33:27.922208 SCN Port Online; g=0x366,isolated=0 A2,P0 A2,P1 50 NA
00:33:27.922385 Port Elp engaged A2,P1 A2,P0 50 NA
00:34:43.904727 Port Elp engaged A2,P1 A2,P0 50 NA
00:34:43.904757 *Removing all nodes from port A2,P0 A2,P0 50 NA
00:34:43.905037 SCN Port F_PORT A2,P1 A2,P0 50 NA
00:40:40.020410 SCN Port Offline;rsn=0x3,g=0x36a A2,P0 A2,P0 50 NA