centos ping 路由_centos服务器怎么ping 命令

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要关闭e69da5e6ba9062616964757a686964616f31333365643662防火墙设置，避免防火墙禁止ping或者在内核参数中禁止ping，这样就不能通过ping确定该主机是否还处于开启状态了。

指定次数的ping的命令：

1、[root@LiWenTong ~]# ping -c 4  www.baidu.com

PING www.a.shifen.com (115.239.210.27) 56(84) bytesof data.

64 bytes from 115.239.210.27: icmp_seq=1 ttl=56 time=17.5 ms---》可以看到从开始到接到返回信息的时间。

64 bytes from 115.239.210.27: icmp_seq=2 ttl=56time=18.6 ms

64 bytes from 115.239.210.27: icmp_seq=3 ttl=56time=17.9 ms

64 bytes from 115.239.210.27: icmp_seq=4 ttl=56time=17.8 ms

2、[root@LiWenTong ~]# ping -i 3 -c 5 -s 1024 www.baidu.com

PING www.a.shifen.com (115.239.210.26) 1024(1052)bytes of data.—》以间隔时间为3秒，大小为1024的ping包去ping百度。

1032 bytes from 115.239.210.26: icmp_seq=1 ttl=56time=18.8 ms

1032 bytes from 115.239.210.26: icmp_seq=2 ttl=56time=19.6 ms

1032 bytes from 115.239.210.26: icmp_seq=3 ttl=56time=18.2 ms

1032 bytes from 115.239.210.26: icmp_seq=4 ttl=56time=17.5 ms

1032 bytes from 115.239.210.26: icmp_seq=5 ttl=56time=19.1 ms

3、[root@LiWenTong ~]# ping  192.168.41.101

PING 192.168.41.101 (192.168.41.101) 56(84) bytesof data.  ---》说明目标网络不可达，就是没有。

From 192.168.41.48 icmp_seq=2 Destination HostUnreachable

From 192.168.41.48 icmp_seq=3 Destination HostUnreachable

From 192.168.41.48 icmp_seq=4 Destination HostUnreachable

From 192.168.41.48 icmp_seq=5 Destination HostUnreachable

From 192.168.41.48 icmp_seq=6 Destination HostUnreachable

From 192.168.41.48 icmp_seq=7 Destination HostUnreachable