Category Archives: Cicso Config

While reconfiguring a Cisco switch 3750G WS-C3750G-24TS-S1U with version 12.0(5.3). When attempting to run “crypto key genearte rsa“, it was failing with below error: MW-CORE-SW01#conf tEnter configuration commands, one per line. End with CNTL/Z.MW-CORE-SW01(config)#hostname MWiredMW-CORE-SW01(config)#ip domain-name magwinya.co.zaMW-CORE-SW01(config)#crypto key generate rsa % Invalid input detected at ‘^’ marker. Workaround Solution: In order to run “crypto key… Read More »

Firstly before upgrading IOS, you need to obtain the latest IOS version by logging on to Cisco Software Central at https://software.cisco.com/ and selecting your device type and version. Please note that configure, price, and order Cisco products, software, and services. Available to partners and to customers with a direct purchasing agreement. In my case I… Read More »

For SSH to work, your Cisco switch needs an RSA public/private key pair. The VTY relies on SSH for its secure transport. Follow these steps to set up your Cisco Switch to run SSH: Switch#conf tEnter configuration commands, one per line. End with CNTL/Z.Switch(config)#hostname HO1HO1(config)#ip domain-name magwinya.co.zaHO1(config)#crypto key generate rsa% You already have RSA keys defined… Read More »

Controlling Access to a VTY via SSH to a specific IP helps improve security to your Cisco Switches or Routers. You can control who can access the virtual terminal lines (vtys) to a router or Cisco Switch by applying an access list to inbound vtys. Switch(config)#access-list 1 remark “Restrict SSH Access” Switch(config)#access-list 1 permit host… Read More »

In this article I show you how to configure banner MOTD on Cisco switch. To configure the message-of-the-day (MOTD) banner that displays when the user logs in to a Cisco 2900 Series switch, use the banner motd command. Switch#conf t Enter configuration commands, one per line. End with CNTL/Z. Switch(config)# Switch(config)#banner motd ! Enter TEXT… Read More »

Configuring the Switch for the First Time. This guide describes how to initially configure a Catalyst 2900 series switch. To configure your switch you need a Cisco Console Cable, coupled with USB to 1 Serial (9 Pin) Port. This is totally dependent to the model of your Laptop. Step 1: Connect to your Cisco Switch… Read More »