Administrator Guide

Switch Management Commands 2069
debug ipv6 dhcp
Use the debug ipv6 dhcp command in Privileged Exec mode to display debug
information about DHCPv6 client activities and to trace DHCPv6 packets to
and from the local DHCPv6 client. To disable debugging, use the no form of
the command.
Syntax
debug ipv6 dhcp
no debug ipv6 dhcp
Default Configuration
Debugging for the DHCP for IPv6 is disabled by default.
Command Mode
Privileged Exec
User Guidelines
This command enabled DHCPv6 packet tracing.
Debug output should be enabled with caution. Switch behavior may be
adversely affected by the additional processing load incurred from enabling
debug.
Examples
console#debug ipv6 dhcp
debug ipv6 mcache
Use the debug ipv6 mcache command to trace MDATAv6 packet reception
and transmission. The receive option traces only received data packets and
the transmit option traces only transmitted data packets. When neither
keyword is used in the command, then all data packet traces are dumped.
Vital information such as source address, destination address, packet length,
and the interface on which the packet is received or transmitted is displayed
on the console.
2CSNXXX_SWUM204.book Page 2069 Monday, January 25, 2016 1:25 PM