一份到环回接口然后传给以太网,因为广播传送与多播传送包括host本身;3)任何送到host的IP地址都要被送到环回接口。 5,最大传输单元(maximumtransmissionunit)MTU...(header)进行压缩;5)一个 链路控制协议可设置多个数据链路(alinkcontrol protocol for negotiating manydata-linkoptions)。附PPP ...
Effectively, you could say that the smallest ICMP Packet is 64 bytes, while the largest size is usually found in the reply messages where the original IP and ICMP header is added to the reply, increasing its size to 76 bytes – under normal circumstances. ...
Essentially, the MSS is equal to MTU minus the size of a TCP header and an IP header: MTU - (TCP header + IP header) = MSS One of the key differences between MTU and MSS is that if a packet exceeds a device's MTU, it is broken up into smaller pieces, or "fragmented." In con...
Routers that support IPv6 will drop any IPv6 packets that exceed the MTU, because they cannot be fragmented. Fragmentation is also not possible when the "Don't Fragment" flag is activated in a packet's IP header. What is the 'Don't Fragment' flag in an IP header? Think of the IP ...
The maximum size of an Ethernet frame is 1518 bytes, which consists of the 14-byte frame header, 4-byte frame trailer, and 1500-byte upper-layerIPpacket. The size of 1500 bytes is the default Ethernet MTU value. Network layer protocols, such as the IP protocol, determine whether to fragm...
As a workaround, some developers put a "Don't Fragment" tag in the header of their packets. If any router, switch, or device can't handle the full size of the packet and wants to fragment it, that option isn't available. The item will drop the packet and send an incomplete message...
Each packet generally includes a header and a payload. The header has the port & IP address of the source and destination network device. The data or message content is the payload. For example, when we transfer an image file, the file is divided into several packets. The packets contain...
Continuing this scheme, you could not count the first required 20 bytes of an IPv4 allowing the packet's size to be up to 65,555 bytes in length. Or, the 0..65,535 could count the length of the optional non-header portion of the IP packet, in bytes. The reason I mention this is...
Traffic over an inter-region VPC peering connection If packets are over their MTU limit, they are fragmented, or they are dropped if theDon't Fragmentflag is set in the IP header. Jumbo frames should be used with caution for internet-bound traffic or any traffic that leaves a VPC. Packet...
This document defines the IKEv2 Link Maximum Atomic Packet and Packet Too Big Extension to limit reassembly operations being performed by the egress security gateway. This extension enables an egress security gateway to notify its ingress counter