Commands for basic FOS troubleshooting ( Brocade)

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There are lots of brocade commands that come handy when troubleshooting a fabric related problems. We divide these into

Marginal Links

switchshow - Indicators like no light or In_sync will be displayed
portshow - Provides report on errors on a port
porterrshow - provides gist of port errors, look for delta of counters
portstatsshow - Provides details of port errors
portstats64show - Extension of portstatsshow when 32 bit counters do not suffice, look for tim_txcrd_z to observe BB_credit deltas

fabriclog -s - Helps isolate flapping ports, look out for offline and online sequences
sfpshow - Provides information on SFP and their state, check for power

Zoning

cfgshow - Displays zoning configuration
defzone --show  - Shows default zone settings
nsshow -t - Display name server entries with additional details

nodefind - To find specific device in fabric
nodefind - To find specific device in fabric

fcping - helps isolate end to end device connectivity and also an easy method to validate zoning


Licensing

licenseshow

Firmware Download

firmwaredownloadstatus
firmwareshow
version

Configuration

configdefault - To reset switch configuration to default
configdownload - To download a previously uploaded config file

switchshow - Lists connection information as well first indicator of fabric segmentations
errshow -r - Look for config events, match events with list in Brocade Message reference guide for suitable actions
fabstatsshow - flags any parameter mismatch during merging
fabricshow - Helps identify domain id conflicts and gives an overview of all fabric members

configure - To set correct switch and flow control parameters

portcfgshow - Display port configuration
portcfgspeed - Set or show port speed
portcfgdefaults - Set port settings to default
portcfgpersistentenable - To enable port permanently
portcfgpersistentdisable - To disable port persistently (across reboots)
portdisable
portenable
portcfgeport - Disable E port
portcfglport - Lock port to L port
portcfggport - Lock port to E or F port

Log collection

supportshow
supportsave