D-Link DXS-3600 Series Reference Manual page 603

DXS-3600 Series Layer 3 Managed 10Gigabit Ethernet Switch CLI Reference Guide
50-3 traceroute
This command is used to display a hop-by-hop path from the switch through an IP network to a specific
destination host.
traceroute [vrf VRF-NAME] {IP-ADDRESS | IPV6-ADDRESS | HOST-NAME}] [probe NUMBER]
[timeout SECONDS] [max-ttl TTL] [port DEST-PORT]
Parameters
vrf VRF-NAME
IP-ADDRESS
IPV6-ADDRESS
HOST-NAME
probe NUMBER
timeout SECONDS
max-ttl TTL
port DEST-PORT
Default
By default, three 40-byte UDP datagrams with an Initial TTL of 1 is sent.
The maximum TTL is 30.
The timeout period is 5 seconds.
The destination base UDP port number is 33434.
The query number for each TTL is 3.
Command Mode
EXEC Mode.
Command Default Level
Level: 1.
Usage Guideline
To interrupt this command after the command has been issued, press Ctrl-C.
This command uses the TTL field in the IP header to cause routers and servers to generate specific
return messages. A trace-route starts by sending a UDP datagram to the destination host with the TTL
field set to 1. If a router finds a TTL value of 1 or 0, it drops the datagram and sends back an ICMP time-
exceeded message to the sender. The trace-route facility determines the address of the first hop by
examining the source address field of the ICMP time-exceeded message.
To identify the next hop, trace-route again sends a UDP packet, but this time with a TTL value of 2. The
first router decrements the TTL field by 1 and send the datagram to the next router. The second router
Specifies the name of the routing forwarding instance.
Specifies the IPv4 address of the destination host.
Specifies the IPv6 address of the system to discover.
Specifies the host name of the system to discover.
(Optional) Specifies the number of datagrams to send. The allowed
range is from 1 to 9.
(Optional) Specifies the response timeout value, in seconds.
(Optional) Specifies the maximum TTL value for outgoing UDP
datagrams. The maximum allowed range is from 1 to 60.
(Optional) Specifies the base UDP destination port number used in
outgoing datagrams. This value is incremented each time a datagram
is sent. The allowed range for the destination port is from 3000 to
64900. Use this option in the unlikely event that the destination host is
listening to a port in the default trace-route port range.
603