Multipath traceroute (mtraceroute) is based on and implements similar functionality to Paris traceroute. It keeps the flow identifier of probe packets fixed to avoid triggering traffic load balancing in Internet routes whenever possible. Moreover, mtraceroute implements the Multipath Detection Algorithm, which identifies routers that perform load balancing on the route from a source to a destination. mtraceroute systematically varies probe packets’ headers to classify load balancing behavior.
% git clone https://github.com/TopologyMapping/mtraceroute
% autoreconf --install
% ./configure
% make
Linux, gcc, libpcap and root access
gcc: 7 or 9 (tested)
libpcap: 0.8 (tested, can get lateset version at https://github.com/the-tcpdump-group/libpcap)
mtraceroute ADDRESS [-c command] [-w wait] [-z send-wait]
-c command: traceroute|ping|mda, default: traceroute
-r number of retries: default: 2
-w seconds to wait for answer: default: 1
-z milliseconds to wait between sends: default: 20
MDA: -c mda [-a confidence] [-f flow-id] [-t max-ttl]
-a confidence level in %: 90|95|99, default: 95
-f what flow identifier to use, some values depends on
the type of the address
IPv4: icmp-chk, icmp-dst, udp-sport, udp-dst, tcp-sport, tcp-dst
Default: udp-sport
IPv6: icmp-chk, icmp-dst, icmp-fl, icmp-tc, udp-sport, udp-dst,
udp-fl, udp-tc, tcp-sport, tcp-dst, tcp-fl, tcp-tc
Default: udp-sport
-t max number of hops to probe: default: 30
TRACEROUTE: -c traceroute [-t max-ttl] [-m method] [-p probes-at-once]
-t max number of hops to probe: default: 30
-m method of probing: icmp|udp|tcp, default: icmp
-p number of probes to send at once: default: 3
PING: -c ping [-n send-probes]
-n number of probes to send: default: 5
Please check https://github.com/TopologyMapping/mtraceroute/issues
mt.c is 程序入口 目前项目计划中有三大功能，分别是
1 - ping
2 - MDA
3 - paris-traceroute
主要问题
1 - 不少函数调用没有进行特殊情况的处理，商业化需要补充。
2 - 没有对网卡进行控制。
3 - 发现少量编程错误。
4 - 程序运行效率较低，并且没有对最大资源进行限制。
分别问题
1 - paris-traceroute
3.1 - traceroute功能耗时时间长，默认2次重试+默认超时5s=10s，如果遇到无法探测节点就会用10s
2 - ping
4.1 ping ipv4的TTL没有控制正确,系统从49开始递增,对比paris-traceroute实现逻辑，应该是IP ID和TTL写反了
3 - MDA
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