{
"name": "traceroute",
"description": "Print the route packets take to network host",
"options": [
{
"names": [
"--help",
"-h"
],
"description": "Show help for traceroute"
},
{
"names": [
"-a"
],
"description": "Turn on AS# lookups for each hop encountered"
},
{
"names": [
"-A"
],
"description": "Turn on AS# lookups and use the given server instead of the default",
"takes_arg": true,
"arg": {
"name": "as_server"
}
},
{
"names": [
"-d"
],
"description": "Enable socket level debugging"
},
{
"names": [
"-D"
],
"description": "When an ICMP response to our probe datagram is received, print the differences between the transmitted packet and the packet quoted by the ICMP response. A key showing the location of fields within th"
},
{
"names": [
"-e"
],
"description": "Firewall evasion mode. Use fixed destination ports for UDP and TCP probes. The destination port does NOT increment with each packet sent"
},
{
"names": [
"-f"
],
"description": "Set the initial time-to-live used in the first outgoing probe packet",
"takes_arg": true,
"arg": {
"name": "first_ttl"
}
},
{
"names": [
"-F"
],
"description": "Set the `don't fragment` bit"
},
{
"names": [
"-g"
],
"description": "Specify a loose source route gateway (8 maximum)",
"takes_arg": true,
"arg": {
"name": "gateway"
}
},
{
"names": [
"-i"
],
"description": "Specify a network interface to obtain the source IP address for outgoing probe packets. This is normally only useful on a multihomed host. (See the -s flag for another way to do this.)",
"takes_arg": true,
"arg": {
"name": "iface"
}
},
{
"names": [
"-I"
],
"description": "Use ICMP ECHO instead of UDP datagrams. (A synonym for `-P icmp`)"
},
{
"names": [
"-M"
],
"description": "Set the initial time-to-live value used in outgoing probe packets. The default is 1, i.e., start with the first hop",
"takes_arg": true,
"arg": {
"name": "first_ttl"
}
},
{
"names": [
"-m"
],
"description": "Set the max time-to-live (max number of hops) used in outgoing probe packets. The default is net.inet.ip.ttl hops (the same default used for TCP connections)",
"takes_arg": true,
"arg": {
"name": "max_ttl"
}
},
{
"names": [
"-n"
],
"description": "Print hop addresses numerically rather than symbolically and numerically (saves a nameserver address-to-name lookup for each gateway found on the path)"
},
{
"names": [
"-P"
],
"description": "Send packets of specified IP protocol. The currently supported protocols are: UDP, TCP, GRE and ICMP Other protocols may also be specified (either by name or by number), though traceroute does not imp",
"takes_arg": true,
"arg": {
"name": "proto"
}
},
{
"names": [
"-p"
],
"description": "Protocol specific. For UDP and TCP, sets the base port number used in probes (default is 33434). traceroute hopes that nothing is listening on UDP ports base to base+nhops-1 at the destination host (s",
"takes_arg": true,
"arg": {
"name": "port"
}
},
{
"names": [
"-q"
],
"description": "Set the number of probes per ``ttl'' to nqueries (default is three probes)",
"takes_arg": true,
"arg": {
"name": "nqueries"
}
},
{
"names": [
"-r"
],
"description": "Bypass the normal routing tables and send directly to a host on an attached network. If the host is not on a directly-attached network, an error is returned. This option can be used to ping a local ho"
},
{
"names": [
"-s"
],
"description": "Use the following IP address (which must be given as an IP number, not a hostname) as the source address in outgoing probe packets. On hosts with more than one IP address, this option can be used to f",
"takes_arg": true,
"arg": {
"name": "src_addr"
}
},
{
"names": [
"-S"
],
"description": "Print a summary of how many probes were not answered for each hop"
},
{
"names": [
"-t"
],
"description": "Set the type-of-service in probe packets to the following value (default zero). The value must be a decimal integer in the range 0 to 255. This option can be used to see if different types-of- service",
"takes_arg": true,
"arg": {
"name": "tos"
}
},
{
"names": [
"-v"
],
"description": "Verbose output. Received ICMP packets other than TIME_EXCEEDED and UNREACHABLEs are listed"
},
{
"names": [
"-w"
],
"description": "Set the time (in seconds) to wait for a response to a probe (default 5 sec.)"
},
{
"names": [
"-x"
],
"description": "Toggle IP checksums. Normally, this prevents traceroute from calculating IP checksums. In some cases, the operating system can overwrite parts of the outgoing packet but not recalculate the checksum ("
},
{
"names": [
"-z"
],
"description": "Set the time (in milliseconds) to pause between probes (default 0). Some systems such as Solaris and routers such as Ciscos rate limit ICMP messages. A good value to use with this this is 500 (e.g. 1/",
"takes_arg": true,
"arg": {
"name": "pausemsecs"
}
}
],
"args": [
{
"name": "host"
}
]
}