Ccnp

In this article, I will try to explain how to enable the Cisco enable password. 1. Connect the switch to the computer via the console port via a putty or …

Web Redirection and Design Tips If WCCP protocol is enabled on a router and on an interface, the router looks at a outbound IP packet to see if it is destined …

If you have forgotten the router’s enable secret password or someone has just given you a second-hand router, and you don’t know it, you need to decrypt it to …

What is Network Address Translation? The Network Address Translation (NAT) functionality in the Cisco routers allows privately addressed networks to connect to …

First of all, I want to quickly answer the question of what is DHCP. DHCP is a service called Dynamic Host Configuration Protocol that allows devices on the …

BGP Finite State Machine: Troubleshooting (See page 108 of the Halabi book for a diagram). 1. Idle Waiting for Start event, normally initiated by the operator …

Introduction When a site is implementing new router connectivity, it is useful to work from a configuration template to enhance productivity. This is …

IPsec Security Association Choices The previous article did not have space to cover some basic choices you have to make when deciding how to run IPsec. One of …

/home/nfcuser — user created to drive NetFlow Analyzer, user working directory configs — router configs for NFA use (it’s not happy with them) exports — …

What is a VPN? A Virtual Private Network or VPN is a network implemented using a shared network infrastructure but so as to provide the security and privacy of …

What is SMDS? Switched Multimegabit Data Service (SMDS) is a high-speed, connectionless, low-delay, packet switched, networking service that operates over …

Introduction This article continues the series on LAN switching and Cisco Catalyst switches. MultiLayer Switching (MLS) is a key component of high performance …