Troubleshooting

Debug/Syslog Operation

ipv6[dhcpv6-client [events packet ]] [forwarding nd packet]

When no debug options are included, displays debug messages for all IPv6 debug options.

dhcpv6-client [events packet]: Displays DHCPv6 client event and packet data.[forwarding]: Displays IPv6 forwarding messages.[nd]: Displays debug messages for IPv6 neighbor discovery.[packet]: Displays IPv6 packet messages.lldpEnables all LLDP message types for the configured destina­ tions.Debug Destinations

Use the debug destination command to enable (and disable) Syslog messaging on a Syslog server or to a CLI session for specified types of debug and Event Log messages.

Syntax: [no] debug destination < logging session buffer debug-console>logging

Enables Syslog logging to configured Syslog servers so that the debug message types specified by the debug <debug-type>command (see “Debug Messages” on page C-50)are sent.

(Default: Logging disabled)

To configure a Syslog server IP address, refer to “Config­ uring a Syslog Server” on page C-55.

Note: Debug messages from the switches covered in this guide have a debug severity level. Because the default configuration of some Syslog servers ignore Syslog messages with the debug severity level, ensure that the Syslog servers you want to use to receive debug messages are configured to accept the debug level. For more informa­ tion, refer to “Operating Notes for Debug and Syslog” on page C-60.

C-52