标签:sdn 一个 erb 数据接口 link 网络协议 span list rarp
[root@oldboy ~]# tcpdump -n icmp -i eth3 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth3, link-type EN10MB (Ethernet), capture size 65535 bytes 17:56:11.790672 IP 192.168.0.109 > 183.232.231.172: ICMP echo request, id 3859, seq 1, length 64 17:56:11.836467 IP 183.232.231.172 > 192.168.0.109: ICMP echo reply, id 3859, seq 1, length 64 17:56:11.996984 IP 192.168.0.109 > 8.8.8.8: ICMP 192.168.0.109 udp port 60926 unreachable, length 126 17:56:12.792953 IP 192.168.0.109 > 183.232.231.172: ICMP echo request, id 3859, seq 2, length 64 17:56:12.843703 IP 183.232.231.172 > 192.168.0.109: ICMP echo reply, id 3859, seq 2, length 64 17:56:13.795072 IP 192.168.0.109 > 183.232.231.172: ICMP echo request, id 3859, seq 3, length 64 17:56:13.839374 IP 183.232.231.172 > 192.168.0.109: ICMP echo reply, id 3859, seq 3, length 64 17:56:14.796599 IP 192.168.0.109 > 183.232.231.172: ICMP echo request, id 3859, seq 4, length 64 17:56:14.841945 IP 183.232.231.172 > 192.168.0.109: ICMP echo reply, id 3859, seq 4, length 64 17:58:32.175915 IP 192.168.0.102 > 8.8.8.8: ICMP 192.168.0.102 udp port 58912 unreachable, length 36 17:58:32.344478 IP 192.168.0.102 > 8.8.8.8: ICMP 192.168.0.102 udp port 58912 unreachable, length 36
表达式是一个正则表达式,tcpdump利用它作为过滤报文的条件,如果一个报文满足表 达式的条件,则这个报文将会被捕获。如果没有给出任何条件,则网络上所有的信息包 将会被截获。
在表达式中一般如下几种类型的关键字:
这些关键字可以组合起来构成强大的组合条件来满足人们的需要。
参考:https://blog.csdn.net/fujibao/article/details/84638542,https://www.cnblogs.com/yhaing/p/8706572.html
标签:sdn 一个 erb 数据接口 link 网络协议 span list rarp
原文地址:https://www.cnblogs.com/zoe233/p/11913295.html