(5) Debug mode of the LACP:
When we enable LACP debug command, the switch will display the trunk ID to which port member belongs.
Topology:
For example:
Console#debug lacp config
The switch will display the LACP function status is enable or disable during the configuration.
Console#debug lacp event
If the LACP trunk is active, the switch will display the port member belongs to which trunk id.
Console#debug lacp packet
The switch will display the information when it receives/transmits the LACP packets.
(6) Debug mode of the MLDSNP:
When we enable MLDSNP debug command, the switch will print out the MLD process information when it receives the MLD packets(ICMPv6).
Console#debug mldsnp all
For example:
The switch receives the MLD message packet from the client.
The switch sends out the specific query from the port which receives the leave message.
The switch sends out the IPv6 General Query.
The switch receives the IPv6 General Query from other device.
(7) Debug mode of the MVR6:
When we enable MVR6 debug command, the switch will print out the MVR6 process information when it receives the ICMPv6 packets.
Console#debug mvr6 all
For example:
The switch receives the MVR6 join message from the client.
The switch receives the MVR6 leave message from the client.
The switch sends out the IPv6 General Query.
(8) Debug mode of the STP:
When we enable STP debug command, the switch will print out the STP process information when it's running STP protocol.
Console#debug spanning-tree all
Topology:
For example:
The switch port 1 (Root port) receives the BPDU packet from the Root Bridge.
If the switch port 1 (Root port) status is changing to block, then the port 2 (Alternate port) status will become forwarding(Root port) and receive the BPDU packet from the Root Bridge.
