Linux traceroute command usage detailed explanation

Linux traceroute command usage detailed explanation

Traceroute allows us to know the path that information takes from your computer to the host on the other side of the Internet. Of course, the path that a data packet takes from the same starting point (source) to the same destination (destination) may be different each time, but basically the route taken is the same most of the time.

Common command parameters

Options:
 -4 Use IPv4
 -6 Use IPv6
 -d --debug Enable socket level debugging
 -F --dont-fragment Do not fragment packets
 -f first_ttl --first=first_ttl
               Start from the first_ttl hop (instead from 1)
 -g gate,... --gateway=gate,...
               Route packets through the specified gateway
               (maximum 8 for IPv4 and 127 for IPv6)
 -I --icmp Use ICMP ECHO for tracerouting
 -T --tcp Use TCP SYN for tracerouting
 -i device --interface=device
               Specify a network interface to operate with
 -m max_ttl --max-hops=max_ttl
               Set the max number of hops (max TTL to be
               reached). Default is 30
 -N squeries --sim-queries=squeries
               Set the number of probes to be tried
               simultaneously (default is 16)
 -n Do not resolve IP addresses to their domain names
 -p port --port=port Set the destination port to use. It is either
               initial udp port value for "default" method
               (incremented by each probe, default is 33434), or
               initial seq for "icmp" (incremented as well,
               default from 1), or some constant destination
               port for other methods (with default of 80 for
               "tcp", 53 for "udp", etc.)
 -t tos --tos=tos Set the TOS (IPv4 type of service) or TC (IPv6
               traffic class) value for outgoing packets
 -l flow_label --flowlabel=flow_label
               Use specified flow_label for IPv6 packets
 -w waittime --wait=waittime
               Set the number of seconds to wait for response to
               a probe (default is 5.0). Non-integer (float
               point) values ​​allowed too
 -q nqueries --queries=nqueries
               Set the number of probes per each hop. Default is
               3
 -r Bypass the normal routing and send directly to a
               host on an attached network
 -s src_addr --source=src_addr
               Use source src_addr for outgoing packets
 -z sendwait --sendwait=sendwait
               Minimal time interval between probes (default 0).
               If the value is more than 10, then it specifies a
               number in milliseconds, else it is a number of
               seconds (float point values ​​allowed too)
 -e --extensions Show ICMP extensions (if present), including MPLS
 -A --as-path-lookups Perform AS path lookups in routing registries and
               print results directly after the corresponding
               addresses
 -M name --module=name Use specified module (either builtin or external)
               for traceroute operations. Most methods have
               their shortcuts (`-I' means `-M icmp' etc.)
 -O OPTS,... --options=OPTS,...
               Use module-specific option OPTS for the
               traceroute module. Several OPTS allowed,
               separated by comma. If OPTS is "help", print info
               about available options
 --sport=num Use source port num for outgoing packets. Implies
               `-N 1'
 -U --udp Use UDP to particular port for tracerouting
               (instead of increasing the port per each probe),
               The default port is 53
 -UL Use UDPLITE for tracerouting (default dest port
               is 53)
 -P prot --protocol=prot Use raw packet of protocol prot for tracerouting
 --mtu Discover MTU along the path being traced. Implies
               `-F -N 1'
 --back Guess the number of hops in the backward path and
               print if it differs
 -V --version Print version info and exit
 --help Read this help and exit

Common command display

Multiple command usage

traceroute -n -m 5 -q 4 -w 3 www.baidu.com 

Description: -n displays the IP address without checking the host name, -m sets the number of hops

-q 4 Each gateway sends 4 packets -w Set the waiting time for the outgoing probe packet to 3 seconds

The basic UDP port used by the detection packet is set to 6888

traceroute -p 6888 www.baidu.com

Bypass the normal routing table and send directly to the host connected to the network

traceroute -r www.baidu.com

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.

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