User's Manual

76-2
address and packet sent time) whose HOPLIMIT is set to 1. When first route on the path receives this
datagram, it minus the HOPLIMIT by 1 and the HOPLIMIT is now 0. So the router will discard this datagram
and returns with a 「ICMPv6 time exceeded」 message (including the source address of the IPv6 packet, all
content in the IPv6 packet and the IPv6 address of the router). Upon receiving this message, the Traceroute6
sends another datagram of which the HOPLIMIT is increased to 2 so to discover the second router. Plus 1 to
the HOPLIMIT every time to discover another router, the Traceroute6 repeat this action till certain datagram
reaches the destination.
Traceroute6 Options and explanations of the parameters of the Traceroute6 command please refer to
traceroute6 command chapter in the command manual.
76.5 Show
show command is used to display information about the system , port and protocol operation. This part
introduces the show command that displays system information, other show commands will be discussed in
other chapters.
Admin Mode
show debugging
Display the debugging state.
show flash
Display the files and the sizes saved in the flash.
show history
Display the recent user input history command.
show history all-users [detail]
Show the recent command history of all users.
Use clear history all-users command to clear
the command history of all users saved by the
system, the max history number can be set by
history all-users max-length command.
show memory
Display content in specified memory area.
show running-config
Display the switch parameter configuration
validating at current operation state.
show startup-config
Display the switch parameter configuration
written in the Flash Memory at current operation
state, which is normally the configuration file
applied in next time the switch starts up.
show switchport interface [ethernet
<IFNAME>]
Display the VLAN port mode and the belonging
VLAN number of the switch as well as the Trunk
port information.
show tcp
show tcp ipv6
Display the TCP connection status established
currently on the switch.
show udp
show udp ipv6
Display the UDP connection status established
currently on the switch.
show telnet login
Display the information of the Telnet client which
currently establishes a Telnet connection with
the switch.