D-Link DWS-1008 Cli Reference Manual page 172

The first row of the display indicates the target host, the maximum number of hops, and the
packet size. Each numbered row displays information about one hop. The rows are displayed in
the order in which the hops occur, beginning with the hop closest to the switch.
The row for a hop lists the total time in milliseconds for each ICMP packet to reach the router or
host, plus the time for the ICMP Time Exceeded message to return to the host.
An exclamation point (!) following any of these values indicates that the Port Unreachable
message returned by the destination has a maximum hop count of 0 or 1. This can occur if the
destination uses the maximum hop count value from the arriving packet as the maximum hop
count in its ICMP reply. The reply does not arrive at the source until the destination receives a
traceroute packet with a maximum hop count equal to the number of hops between the source
and destination.
An asterisk (*) indicates that the timeout period expired before MSS received a Time Exceeded
message for the packet.
If Traceroute receives an ICMP error message other than a Time Exceeded or Port Unreachable
message, MSS displays one of the error codes described in the table below instead of displaying
the round-trip time or an asterisk (*).
The table below describes the traceroute error messages.
See Also:
• ping
D-Link DWS-1008 CLI Manual
Field
!N No route to host. The network is unreachable.
!H No route to host. The host is unreachable.
!P Connection refused. The protocol is unreachable.
!F Fragmentation needed but Do Not Fragment (DNF) bit was set.
!S Source route failed.
!A Communication administratively prohibited.
? Unknown error occurred.
Description
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