Debugging
To use the debugging logs feature:
- Enable debugging. Run: - switch(config) # debug ethernet all
- Display the debug level set. Run: - switch(config) # show debug ethernet
- Display the logs. Run: - switch(config) # show log debug {match |- continue}
For more information about this feature and its potential applications, please refer to the following community post:
debug ethernet all
| debug ethernet all Enables debug traces for 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. | ||
| 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. | ||
| 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 | |
| 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} Configures the trace level for interface. | ||
| 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} Configures the trace level for LACP. | ||
| 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} Configures the trace level for LLDP. | ||
| 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. | ||
| 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} Configures the trace level for QoS. | ||
| 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} Configures the trace level for spanning-tree. | ||
| 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} Configures the trace level for VLAN. | ||
| 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: 
 | |
| 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 | |
| 3.6.6000 | Updated Example | |
| Example | switch (config) # show debug ethernet dcbx | |
| Related Commands | debug ethernet all | |
| 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 | ||
| Related Commands | ||
| Notes | ||