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How to Delete OLD Ios from flash memory Router# delete old IOS image name Delete filename [old IOS image name]? Delete flash: old IOS image name [confirm] Router# How claim the memory back? Router# squeeze flash:   Squeeze operation may take a while. Continue? [confirm] squeeze in progress… eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee Rebuild file system directory… Squeeze of [...]

Note :This is a router on a stick method (cisco 1941 router) (a) Find out router interfaces EVROUTER#show ip interface brief Interface IP-Address OK? Method Status Prot ocol GigabitEthernet0/0 unassigned YES manual up up   GigabitEthernet0/1 88.88.88.81 YES DHCP up up   NVI0 unassigned NO unset up up (b) Create Sub interface related to individuals [...]

I am using cisco 2811 router with 1 WIC-1T card for serial interface Both router is connected by serial (DCE/DTE) interface and and ip is set as follows: router 1: 192.168.1.1 255.255.255.0 router 1: 192.168.1.2 255.255.255.0 Problem: line protocol is showing down . Example bellow : R1#show ip interface brief Interface IP-Address OK? Method Status [...]

How to setup OSPF routing : How to view what protocols is running: show ip protocols how to kill rip protocols (if exists) configure terminal no router rip How create OSPF protocols configure terminal router ospf 1 [ here 1 is the process id, which has to be same to every router in the organization [...]

Trunking: (1)Create trunk ports between 2 switch: to setup trunk between port F0/11 and F012 of Switch S1 For Port F0/11 configure terminal interface fastEthernet 0/11 switchport mode trunk note : if upper commands say : command rejected with error : Trunk encapsulation is Auto, then do the followings switchport trunk encapsulation dot1q Now type [...]

Privileges mode password : enable , configure t, enable secret test How to lock down telnet port : enable, configure t , line vty 0 15 , login , password test How to lock down console port : enable , configure t, line console 0 , login, password test How to set logoin banner enable, [...]

How to lock the privilege mode : enable configure terminal enable secret cisco How to secure vty ? enable configure terminal line vty 0 15 [ for help type line vty ? ] login password cisco How to secure console port? enable configure terminal line con 0 login password cisco How to secure the aux [...]

Deleted/Corrupted/Wrong Type/No IOS image and router won’t boot: http://www.dslreports.com/faq/13824 Break Key Sequence: http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080174a34.shtml ROMmon Recovery for the Cisco 2600 Series Router: http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a0080094a0b.shtml How to Download a Software Image to a Cisco 2600 via TFTP: http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008015bf9e.shtml For Cisco 2600 Router : (a) Connect to the router via Teraterm (console port) (b) Now Turned on the router [...]

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