IOS

Cisco switch IOS upgrade from Cli using tar

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Cisco switch IOS  upgrade from Cli using tar   3750#archive download-sw ?   /destination-system  specify destination system to receive software   /force-reload        Unconditionally reload system after successful sw                        upgrade   /imageonly           Load only the IOS image(s)   /leave-old-sw        Leave old sw installed after successful sw upgrade   /no-set-boot         Don’t set BOOT — leave existing boot config alone   /no-version-check    skip version check that prevents incompatible image                        install   /only-system-type    specify individual system type to…

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EEM(Embedded Event manager ) Part 1 -Intro

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Introduction:   The Cisco Embedded Event Manager (EEM) scripting Technical Support Forum gives you access to participate in tech discussions and go through documents on Capacity Planning Diagnostics, EEM for IOS-XR, EEM for NX-OS, Embedded Automation Systems (EASy), EEM script examples and other EEM scripting related issues. You can browse through latest technical content and get an overview on Cisco EEMscripting; current tech topics that are hot among the community including OSPF LSA vulnerability monitoring, Memory leak related…

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Kron Policy Examples For Clearing ARP Issues in IOS

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Kron Policy Examples  For Clearing ARP Issues in IOS     Router(config)# kron policy-list kpl-reload Router(config-kron-policy)# cli reload Router(config-kron-policy)# exit Router(config)# kron occurrence ko-reload in 1 oneshot Router(config-kron-occurrence)# policy-list kpl-reload Router(config-kron-occurrence)# exit Router# show kron schedule At time and recurring Router(config)# kron policy-list kpl-clear_arp Router(config-kron-policy)# cli send log Clear ARP cache Router(config-kron-policy)# cli clear arp-cache interface fa0/1 Router(config-kron-policy)# exit Router(config)# kron occurrence ko-clear_arp-07:00h at 07:00 recurring Router(config-kron-occurrence)# policy-list kpl-clear_arp Router(config-kron-occurrence)# exit Router(config)# kron occurrence ko-clear_arp-15:00h…

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EEM Script – Clear DHCP Bindings and Arp Cache

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EEM Script example to clear stuff in Cisco IOS I had to recently clear the DHCP Conflict log from a Cisco Router as it was filling up and not allowing devices to get back on the network in a specific situation. Well instead of doing it manually I just decided to give Cisco EEM Script a try. And it worked out pretty good :). Another scenario I used was clearing DHCP bindings and arp. EEM Script – Clear DHCP Conflict Log event manager applet CLEAR_DHCP_CONFLICT (This is applets…

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