计算机网络实用工具之fping

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简介

fping是一个类似ping的程序，它使用互联网控制消息协议（ICMP）回显请求来确定目标主机是否正在响应。fping与ping的不同之处在于，您可以在命令行上指定任意数量的目标，或者指定一个包含要ping的目标列表的文件。fping将发送一个ping数据包，并以循环方式移动到下一个目标，而不是发送到一个目标直到它超时或回复。

官网

fping Homepage

安装

# 例ubuntu sudo apt install fping # centos 7 sudo yum install fping

使用帮助

# fping -h Usage: fping [options] [targets...] Probing options: -4, --ipv4 only ping IPv4 addresses -6, --ipv6 only ping IPv6 addresses -b, --size=BYTES amount of ping data to send, in bytes (default: 56) -B, --backoff=N set exponential backoff factor to N (default: 1.5) -c, --count=N count mode: send N pings to each target -f, --file=FILE read list of targets from a file ( - means stdin) -g, --generate generate target list (only if no -f specified) (give start and end IP in the target list, or a CIDR address) (ex. fping -g 192.168.1.0 192.168.1.255 or fping -g 192.168.1.0/24) -H, --ttl=N set the IP TTL value (Time To Live hops) -I, --iface=IFACE bind to a particular interface -l, --loop loop mode: send pings forever -m, --all use all IPs of provided hostnames (e.g. IPv4 and IPv6), use with -A -M, --dontfrag set the Don't Fragment flag -O, --tos=N set the type of service (tos) flag on the ICMP packets -p, --period=MSEC interval between ping packets to one target (in ms) (in loop and count modes, default: 1000 ms) -r, --retry=N number of retries (default: 3) -R, --random random packet data (to foil link data compression) -S, --src=IP set source address -t, --timeout=MSEC individual target initial timeout (default: 500 ms, except with -l/-c/-C, where it's the -p period up to 2000 ms) Output options: -a, --alive show targets that are alive -A, --addr show targets by address -C, --vcount=N same as -c, report results in verbose format -d, --rdns show targets by name (force reverse-DNS lookup) -D, --timestamp print timestamp before each output line -e, --elapsed show elapsed time on return packets -i, --interval=MSEC interval between sending ping packets (default: 10 ms) -n, --name show targets by name (reverse-DNS lookup for target IPs) -N, --netdata output compatible for netdata (-l -Q are required) -o, --outage show the accumulated outage time (lost packets * packet interval) -q, --quiet quiet (don't show per-target/per-ping results) -Q, --squiet=SECS same as -q, but add interval summary every SECS seconds -s, --stats print final stats -u, --unreach show targets that are unreachable -v, --version show version -x, --reachable=N shows if >=N hosts are reachable or not

使用示例

# 测试多个主机是否可达 # fping 8.8.8.8 www.google.com 8.8.8.8 is alive www.google.com is alive # 指定次数测试多个主机，显示延时等信息 # fping -c 3 8.8.8.8 www.google.com 8.8.8.8 : [0], 64 bytes, 1.52 ms (1.52 avg, 0% loss) www.google.com : [0], 64 bytes, 1.79 ms (1.79 avg, 0% loss) 8.8.8.8 : [1], 64 bytes, 1.55 ms (1.54 avg, 0% loss) www.google.com : [1], 64 bytes, 1.78 ms (1.78 avg, 0% loss) 8.8.8.8 : [2], 64 bytes, 1.54 ms (1.54 avg, 0% loss) www.google.com : [2], 64 bytes, 1.74 ms (1.77 avg, 0% loss) 8.8.8.8 : xmt/rcv/%loss = 3/3/0%, min/avg/max = 1.52/1.54/1.55 www.google.com : xmt/rcv/%loss = 3/3/0%, min/avg/max = 1.74/1.77/1.79 # 从文件读取主机列表 # cat test.list # dns 8.8.8.8 # google www.google.com # fping -c 3 -f test.list 8.8.8.8 : [0], 64 bytes, 1.52 ms (1.52 avg, 0% loss) www.google.com : [0], 64 bytes, 1.84 ms (1.84 avg, 0% loss) 8.8.8.8 : [1], 64 bytes, 1.46 ms (1.49 avg, 0% loss) www.google.com : [1], 64 bytes, 1.77 ms (1.81 avg, 0% loss) 8.8.8.8 : [2], 64 bytes, 1.48 ms (1.49 avg, 0% loss) www.google.com : [2], 64 bytes, 1.76 ms (1.79 avg, 0% loss) 8.8.8.8 : xmt/rcv/%loss = 3/3/0%, min/avg/max = 1.46/1.49/1.52 www.google.com : xmt/rcv/%loss = 3/3/0%, min/avg/max = 1.76/1.79/1.84 

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