core1#conf tEnter configuration commands, one per line. End with CNTL/Z.core1(config)#inter range gi0/1-4core1(config-if-range)#do show etherch sumFlags: D - down P - bundled in port-channel I - stand-alone s - suspended H - Ho…
1.Port Channel 介绍 Port Channel 简介 绑定多个物理链路(最多8条),到一个单一的逻辑链路,在两个物理设备之间 每个物理端口只能被放入一个port-channel中. 在一个port-channel中所有端口必须兼容,并且需要有相同的速率和双工模式. 不能把二层和三层的接口放入相同的port channel Port channel分为两种,Access port 和 Trunk port Port Channel 模式 LACP(公有) active pa…
作者:邓聪聪 为满足等堡安全要求,对测评对象的交换机做安全登陆的限制 :开启ssh的服务 stelnet server enable :#创建认证用户的用户名和密码 aaa local-user test password cipher %$%$Nv;S#g+K.%N9U,)zHPH,]KB9%$%$ local-user test privilege level local-user test service-type ssh : 为授权用户配置关联项 ssh user test ssh us…
Synopsis Gets, sets or clears the channel group. Each channel can only be member of exactly one group per category; categories can be employed for more fine grained group management, and thus can help to assign more than one group name per channel. D…
在mysql中,group by默认会执行排序: By default, MySQL sorts GROUP BY col1, col2, ... queries as if you also included ORDER BY col1, col2, ... in the query. If you include an explicit ORDER BY clause that contains the same column list, MySQL optimizes it away wi…
测试必备的Mysql常用sql语句,每天敲一篇,每次敲三遍,每月一循环,全都可记住!! https://www.cnblogs.com/poloyy/category/1683347.html 前言 group by 关键字可以根据一个或多个字段对查询结果进行分组 group by 一般都会结合Mysql聚合函数来使用 如果需要指定条件来过滤分组后的结果集,需要结合 having 关键字:原因:where不能与聚合函数联合使用 group by 语法格式 GROUP BY <字段名>[,<…
