Debugging

To use the debugging logs feature:

Enable debugging. Run:

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            switch (config) # debug ethernet all

Display the debug level set. Run:

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            switch (config) # show debug ethernet

Display the logs. Run:

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            switch (config) # show log debug {match | continue}

Additional Reading and Use Cases

For more information about this feature and its potential applications, please refer to the following community post:

Debugging Commands

debug ethernet all

	debug ethernet all no debug ethernet all Enables debug traces for Ethernet modules. The no form of the command disables the debug traces for all Ethernet modules.
Syntax Description	N/A
Default	N/A
Configuration Mode	config
History	3.3.4150
Example	switch (config) # debug ethernet all
Related Commands	show debug ethernet
Notes

debug ethernet dcbx

	debug ethernet dcbx {all \| management \| fail-all \| control-panel \| tlv} Configures the trace level for DCBX. The no form of the command disables the configured DCBX debug traces.
Syntax Description	all	Enables all traces
	management	Management messages
	fail-all	All failure traces
	control-panel	Control plane traces
	tlv	TLV related trace configuration
Default	N/A
Configuration Mode	config
History	3.3.4150
Example	switch (config) # debug ethernet dcbx all
Related Commands	show debug ethernet
Notes

debug ethernet ip igmp-snooping

	debug ethernet ip igmp-snooping {all \| forward-db-messages \| group-info \| init-shut \| packet-dump \| query \| source-info \| system-resources-management \| timer \| vlan-info \| filter \| max-groups} no debug ethernet ip igmp-snooping {all \| forward-db-messages \| group-info \| init-shut \| packet-dump \| query \| source-info \| system-resources-management \| timer \| vlan-info \| filter \| max-groups} Configures the trace level for IGMP snooping. The no form of the command disables tracking a specified level.
Syntax Description	all	Enable track traces
	forward-db-messages	Forwarding database messages
	group-info	Group information messages
	init-shut	Init and shutdown messages
	packet-dump	Packet dump messages
	query	Query related messages
	source-info	Source information messages
	system-resources-management	System resources management messages
	timer	Timer messages
	vlan-info	VLAN information messages
	filter	Filter profile messages
	max-groups	Filter max-groups messages
Default	N/A
Configuration Mode	config
History	3.3.4150
History	3.9.2100	Added support for IGMP snooping filtering option (filter and max-groups options)
Example	switch (config) # debug ethernet ip igmp-snooping all
Related Commands	show debug ethernet
Notes

debug ethernet ip interface

	debug ethernet ip interface {all \| arp-packet-dump \| buffer \| enet-packet-dump \| error \| fail-all \| filter \| trace-error \| trace-event} no debug ethernet ip interface {all \| arp-packet-dump \| buffer \| enet-packet-dump \| error \| fail-all \| filter \| trace-error \| trace-event} Configures the trace level for interface. The no form of the command disables tracking a specified level.
Syntax Description	all	Enable track traces
	arp-packet-dump	ARP packet dump trace
	buffer	Buffer trace
	enet-packet-dump	ENET packet dump trace
	error	Trace error messages
	fail-all	All failures including Packet Validation Trace
	filter	Lower layer traces
	trace-error	Trace error messages
	trace-event	Trace event messages
Default	N/A
Configuration Mode	config
History	3.3.4150
Example	switch (config) # debug ethernet ip interface all
Related Commands	show debug ethernet
Notes

debug ethernet lacp

	debug ethernet lacp {all \| all-resource \| data-path \| fail-all \| init-shut \| management \| memory \| packet} no debug ethernet lacp {all \| all-resources \| data-path \| fail-all \| init-shut \| management \| memory \| packet} Configures the trace level for LACP. The no form of the command disables the configured LACP debug traces.
Syntax Description	all	Enables all traces
	all-resource	BPDU related messages
	data-path	Init and shutdown traces
	fail-all	Management messages
	init-shut	Memory related messages
	management memory	IP packet dump trace
	memory	All failure traces
	packet	OS resource trace
Default	N/A
Configuration Mode	config
History	3.3.4150
Example	switch (config) # debug ethernet lacp all
Related Commands	show debug ethernet
Notes

debug ethernet lldp

	debug ethernet lldp {all \| control-panel \| critical-event \| data-path \| fail-all \| init-shut \| management \| memory \| neigh-add \| neigh-age-out \| neigh-del \| neigh-drop \| neigh-updt \| tlv} no debug ethernet lldp {all \| control-panel \| critical-event \| data-path \| fail-all \| init-shut \| management \| memory \| neigh-add \| neigh-age-out \| neigh-del \| neigh-drop \| neigh-updt \| tlv} Configures the trace level for LLDP. The no form of the command disables the configured LLDP debug traces.
Syntax Description	all	Enables all traces
	control-panel	Control plane traces
	critical-event	Critical traces
	data-path	IP packet dump trace
	fail-all	All failure traces
	init-shut	Init and shutdown traces
	management	Management messages
	memory	Memory related messages
	neigh-add	Neighbor add traces
	neigh-age-out	Neighbor ageout traces
	neigh-del	Neighbor delete traces
	neigh-drop	Neighbor drop traces
	neigh-updt	Neighbor update traces
	tlv	TLV related trace configuration
Default	N/A
Configuration Mode	config
History	3.3.4150
Example	switch (config) # debug ethernet lldp all
Related Commands	show debug ethernet
Notes

debug ethernet port

	debug ethernet port all Configures the trace level for port. The no form of the command disables the configured port debug traces.
Syntax Description	N/A
Default	N/A
Configuration Mode	config
History	3.3.4150
Example	switch (config) # debug ethernet port all
Related Commands	show debug ethernet
Notes

debug ethernet qos

	debug ethernet qos {all \| all-resource \| control-panel \| fail-all \| filters \| init-shut \| management \| memory \| packet} no debug ethernet qos {all \| all-resource \| control-panel \| fail-all \| filters \| init-shut \| management \| memory \| packet} Configures the trace level for QoS. The no form of the command disables the configured QoS debug traces.
Syntax Description	all	Enables all traces
	all-resource	OS resource traces
	control-panel	Control plane traces
	fail-all	All failure traces
	filters	Lower layer traces
	init-shut	Init and shutdown traces
	management	Management messages
	memory	Memory related messages
	packet	BPDU related messages
Default	N/A
Configuration Mode	config
History	3.3.4150
Example	switch (config) # debug ethernet port all
Related Commands	show debug ethernet
Notes

debug ethernet spanning-tree

	debug ethernet spanning-tree {all \| error \| event \| filters \| init-shut \| management \| memory \| packet \| port-info-state-machine \| port-receive-state-machine \| port-role-selection-state-machine \| port-transit-state-machine \| port-transmit-state-machine \| protocol-migration-state-machine \| timers} no debug ethernet spanning-tree {all \| error \| event \| filters \| init-shut \| management \| memory \| packet \| port-info-state-machine \| port-receive-state-machine \| port-role-selection-state-machine \| port-transit-state-machine \| port-transmit-state-machine \| protocol-migration-state-machine \| timers} Configures the trace level for spanning-tree. The no form of the command disables the configured spanning-tree debug traces.
Syntax Description	all	Enables all traces
	error	Error messages trace
	event	Events related messages
	filters	Lower later traces
	init-shut	Init and shutdown traces
	management	Management messages
	memory	Memory related messages
	packet	BPDU related messages
	port-info-state-machine	Port information messages
	port-receive-state-machine	Port received messages
	port-role-selection-state-machine	Port role selection messages
	port-transit-state-machine	Port transition messages
	port-transmit-state-machine	Port transmission messages
	protocol-migration-state-machine	Protocol migration messages
	timers	Timer modules message
Default	N/A
Configuration Mode	config
History	3.3.4150
Example	switch (config) # debug ethernet spanning-tree all
Related Commands	show debug ethernet
Notes

debug ethernet vlan

	debug ethernet vlan {all \| fwd \| priority \| filters} no debug ethernet vlan {all \| fwd \| priority \| filters} Configures the trace level for VLAN. The no form of the command disables the configured VLAN debug traces.
Syntax Description	all	Enables all traces
	fwd	Forward
	priority	Priority
	filters	Lower layer traces
Default	N/A
Configuration Mode	config
History	3.3.4150
Example	switch (config) # debug ethernet vlan all
Related Commands	show debug ethernet
Notes

show debug ethernet

	show debug ethernet {dcbx \| ip {arp \| dhcp-relay \| igmp-snooping \| interface \| ospf} \| lacp \| lldp \| port \| qos \| spanning-tree \| vlan} Displays debug level configuration on a specific switch.
Syntax Description	dcbx	Displays the trace level for spanning tree
	ip	Displays debug trace level for ethernet routing module: arp dhcp-relay igmp-snooping interface ospf
	lacp	Displays the trace level for LACP
	lldp	Displays the trace level for LLDP
	port	Displays the trace level for port
	qos	Displays the trace level for QoS
	spanning-tree	Displays the trace level for spanning tree
	vlan	Displays the trace level for VLAN
Default	N/A
Configuration Mode	Any command mode
History	3.3.4150
History	3.6.6000	Updated Example
Example	switch (config) # show debug ethernet dcbx dcbx protocol: management : ON fail-all : ON control-panel: ON tlv : ON
Related Commands	debug ethernet all debug ethernet dcbx debug ethernet ip igmp-snooping debug ethernet ip interface debug ethernet lacp debug ethernet lldp debug ethernet port debug ethernet qos debug ethernet spanning-tree debug ethernet vlan
Notes

show log debug

	show log debug [continuous \| files \| matching \| not] Displays current event debug-log file in a scrollable pager.
Syntax Description	continuous	Displays new event log messages as they arrive
	files	Displays archived debug log files
	matching	Displays event debug logs that match a given regular expression
	not	Displays event debug logs that do not meet certain criteria
Default	N/A
Configuration Mode	Any command mode
History	3.3.4150
Example
switch (config) # show log debug Jun 15 16:20:47 switch-627e4c last message repeated 7 times Jun 15 16:20:47 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>QoSHwQueueDelete i4IfIndex[137] Jun 15 16:20:47 switch-627e4c last message repeated 7 times Jun 15 16:20:47 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>QoSHwQueueDelete i4IfIndex[141] Jun 15 16:20:47 switch-627e4c last message repeated 7 times Jun 15 16:20:48 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: ==FsHwSetSpeed sx_api_port_speed_admin_set = 0 Jun 15 16:20:48 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: ==FsHwGetSpeed sx_api_port_speed_oper_get = 0 Jun 15 16:20:49 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>CfaGddConfigPort NS u4IfIndex[89], u1ConfigOption[6] Jun 15 16:20:49 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>CfaGddConfigPort NS u4IfIndex[33], u1ConfigOption[6] Jun 15 16:20:49 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>CfaGddConfigPort NS u4IfIndex[73], u1ConfigOption[6] Jun 15 16:20:49 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>CfaGddConfigPort NS u4IfIndex[121], u1ConfigOption[6] Jun 15 16:20:49 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>CfaGddConfigPort NS u4IfIndex[133], u1ConfigOption[6] Jun 15 16:20:49 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>CfaGddConfigPort NS u4IfIndex[13], u1ConfigOption[6] Jun 15 16:20:49 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>CfaGddConfigPort NS u4IfIndex[81], u1ConfigOption[6] Jun 15 16:20:49 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>CfaGddConfigPort NS u4IfIndex[117], u1ConfigOption[6] Jun 15 16:20:49 switch-627e4c issd[6509]: TID 1274844336: [issd.DEBUG]: NPAPI: >>CfaGddConfigPort NS u4IfIndex[65], u1ConfigOption[6] . . .
Related Commands
Notes

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