copy system:running-config nvram:startup-config : to save your configuration changes to the startup configuration so that the changes will not be lost if the software reloads or a power outage occurs command | {begin | include | exclude} regular-expr…

debug iapp through debug ip ftp debug iapp : to begin debugging of IAPP operations(in privileged EXEC mode) no debug iapp debug idmgr : to enable debugging for the identity manager (IDMGR)(in privileged EXEC mode) no debug idmgr debug of-mgr efp-ext…

debug aaa accounting through debug auto-config debug aaa accounting : to display information on accountable events as they occur(in privileged EXEC mode) no debug aaa accounting : to disable debugging output debug aaa authentication : to display info…

debug eap through debug he-module subslot periodic debug eap : to display information about Extensible Authentication Protocol(EAP)(in privileged EXEC mode) no debug eap debug ecfmpal : to enable debugging of the data path of the Ethernet Connectivit…

Cisco IOS Basic CLI Configuration : Switch Port Command 1.  Basic Switch>en Switch#conf t Enter configuration commands, one per line.  End with CNTL/Z. Switch(config)#interface vlan 1 Switch(config-if)#ip address 192.168.1.200 255.255.255.0 Switch(co…

clear license agent : to clear license agent statistics counters or connection statistics (in privileged EXEC mode) debug license : to enable controlled Cisco IOS software license debugging activity on a device (in privileged EXEC mode) no debug lice…

absolute : to specify an absolute time for a time-range (in time-range configuration mode) no absolute buffer-length : to specify the maximum length of the data stream to be forwarded (in line configuration mode) no buffer-length buffers : to make ad…

An Overview of Cisco IOS Versions and Naming http://www.ciscopress.com/articles/article.asp?p=2106547 By Sean Wilkins. Article is provided courtesy of Cisco Press. Date: Jun 28, 2013. SaveDiggDel.icio.usPrint Article Information Article Description V…

Cisco IOS/IOS XE 新漏洞检测与修复 CVE-2018-0150 Cisco IOS XE 存在默认弱口令 漏洞影响: 默认弱口令可以导致攻击者直远程登录控制Cisco设备.受影响版本,Cisco IOS XE 16.x 修复方案: router# no username cisco switcher# no username cisco 或者删除cisco账户也可以 CVE-2018-0151 Cisco IOS/IOS XE QoS存在漏洞 漏洞影响: UDP端口18999开启…

首先说说IOS的运行平台,c2500.c2600.c4500.c2950代表运行此IOS的硬件平台,例如:C2500指2500系列路由器. 其次,看看IOS的版本,IOS有主版本号:11.0.11.1.11.2.11.3.12.0.12.1.12.2.12.3.12.4等,这些主版本号相当于windows的版本有win98.win2000.winxp.win2003. 当Cisco发布了某个主版本号的IOS以后,它会对它进行维护(仅修正bug,不添加新功能),每维护一次,维护版本号加1.例如c2…