If you just started your Cisco certification journey, and followed the specifics listed in the first two posts in this series, you’d have made a couple of big choices. You’d have chosen whether to ...

就算是最便宜的Cisco 871W也需要500美元，但他的功能也不比Cisco 851W多多少，只不过多了个外接天线连接器，可以让你连接一个更大的天线。只有700美元的Cisco 871W才会提供额外的附加功能，例如BGP路由，VLAN的支持，以及QoS传输质量协议。 上次，我解释了如何配置 ...

$有时候，监视路由器接口，你可能会出去一会，那怎么办啊。 交给show-interface.txt来做这件事情吧。 以上的等待时间的单位是秒。 $下面要介绍的是笔者认为非常有用的小工具。 我们有时候敲错了或者粘贴配置错了，又不能重启清之，这一条一条的no真的是太 ...

SDN (software-defined networking) promises some real benefits for people who use networks, but to the engineers who manage them, it may represent the end of an era. Ever since Cisco made its first ...

Imagine a lab pod with 4-5 routers, connected with serial links, Frame Relay, and Ethernet. It has PCs for testing with ping and traceroute. Now think of the cost: $0.00. And it takes no more ...

Software-defined networking (SDN) promises some real benefits for people who use networks, but to the engineers who manage them, it may represent the end of an era. Ever since Cisco made its first ...