3Com Switch 8800 Advanced Software V5 Configuration Guide

234 CHAPTER 23: IPV6 BASICS CONFIGURATION
Solution:
Carry out the display current-configuration command in any view or the
display this command in system view to check that the IPv6 packet
forwarding function is enabled.
Carry out the display ipv6 interface command in any view to check that the
IPv6 address of the interface is correct and that the interface is up.
Carry out the debugging ipv6 packet command in user view to enable the
debugging for IPv6 packets and make judgment according to the debugging
information.