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Features and design，详情可参考吃瓜
What if the browser can’t hit the CA?，详情可参考传奇私服新开网｜热血传奇SF发布站｜传奇私服网站
On paper internet exchanges (IX) are very simple in their implementation, simply put together a bunch of routers on a shared layer 2 ethernet switch (and coordinate IP addressing for the LAN) and those routers will be able to set up BGP sessions with each other and exchange traffic directly over the switch(s).，推荐阅读超级权重获取更多信息