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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.
lldp
Enables 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