nat
Contents
专有网络VPC的视频简介和组成_专有网络 VPC-阿里云帮助中心 - https://help.aliyun.com/zh/vpc/product-overview/what-is-a-vpc
switch vs router
-
switch store mac address in a lookup table
-
router store ip address in the routing table;
forward data packet between computer networks
NAT
network address transalation
snat: translate source ip dnat: translate destination ip ;
详解SLB、EIP、NAT网关之间区别, 合理选择云上公网入口
public ip
- eip (elastic ip):弹性ip
- nat (network address translation): nat网关
- slb(server load balance)
底层都是都过nat实现
可用区
可用区:同一地区的不同的地方;电力和网络相互隔;
同一地域的不同可用区内网互联