skb_dst(skb)指向的是路由项dst_entry,它的input在收到报文时赋值ip_local_deliver(),而output在发送报文时赋值ip_output(),该函数的作用是处理单播数据报,设置数据报的输出网络设备以及网络层协议类型参数。随后调用ip_finish_output,观察数据报长度是否大于MTU,若大于,则调用ip_fragment分片,否则调用ip_finish_out...
Disable Path MTU Discovery. If enabled in mode 1 and a fragmentation-required ICMP is received, the PMTU to this destination will be set to min_pmtu (see below). You will need to raise min_pmtu to the smallest interface MTU on your system manually if you want to avoid locally generated ...
3. IP fragmentation 理想情况下,Frame是不可分割时(DF[Don't Fragment]为0),Ethernet frames也能通信的。. iproute2文档说,tunnel interface有一个选项nopmtudisc (用途是:disable Path MTU Discovery on this tunnel.) 在此,我们重新创建tunnel interface(同时在routerA&B执行): routerA#ip link del gretap...
ip_no_pmtu_disc - BOOLEAN Disable PathMTU Discovery. default FALSE IP Fragmentation: ipfrag_high_thresh - INTEGER Maximum memory used to reassemble IP fragments. When ipfrag_high_thresh bytes of memory is allocated for this purpose, the fragment handler will toss packets until ipfrag_low_thresh...
1. TCP/IP协议族简述 1.1 OSI 7层模型 1.2 TCP/IP四层模型 1.3 TCP/IP协议的特点 TCP/IP协议不依赖于任何特定的计算机硬件或操作系统,提供开放的协议标准,即使不考虑Internet,TCP/IP协议也获得了广泛的支持。所以TCP/IP协议成为一种联合各种硬件和软件的实用系统。
IP over a Wide Area Network like the Internet, it is preferable to use smaller-sized datagrams to ensure that they don't need to be further broken down along the route through a process calledIP fragmentation.[3] The kernel is able to automatically determine the smallest MTU of an IP ...
在IPv4 Settings选项卡中,选择 IP 分配方法,并可选择设置额外的静态地址、DNS 服务器、搜索域和路由。 保存连接。 关闭nm-connection-editor。 注意 当您点+按钮添加新连接时,NetworkManager会为那个连接创建新配置文件,然后打开同一个对话...
github_repos_disable_wiki.sh - disables the Wiki on one or more given repos to prevent documentation fragmentation and make people use the centralized documentation tool eg. Confluence or Slite github_repos_with_few_users.sh - finds repos with few or no users (default: 1), which in Enterpri...
# disable IPv6 HADOOP_OPTS=-Djava.net.preferIPv4Stack=true sudo mkdir /opt/hadoop-datastore chown -R hadoop.hadoop /opt/hadoop-datastore chown -R hadoop.hadoop /opt/hadoop* tar -xzvf hadoop-0.17.0.tar.gz sudo mv hadoop-0.17.0 /opt ...
Cannot get device udp-fragmentation-offload settings: Operation not supported rx-checksumming: on tx...