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cisco
82 posts
How to Configure HSRP (Hot Standby Router Protocol) on Cisco Switches: Redundancy Setup Guide
There’s a particular kind of outage that teaches every network engineer the value of gateway redundancy: the moment…
How to Set Up Frame Relay on Cisco Routers: Configuration and Troubleshooting Guide
Frame Relay doesn’t show up much in greenfield deployments anymore — MPLS and internet-based VPNs have largely replaced…
How to Configure PPP (Point-to-Point Protocol) on Cisco Routers with Authentication
PPP is one of those protocols that’s simple enough to configure in five minutes, yet rich enough to…
How to Set Up GRE (Generic Routing Encapsulation) Tunnels on Cisco Routers: Complete Guide
If you’ve ever needed to connect two remote sites over the public internet, or carry traffic that your…
How to Configure VRF (Virtual Routing and Forwarding) on Cisco Routers for Network Segmentation
Every network engineer eventually runs into a situation where one physical router needs to behave like several completely…
How to Implement Policy-Based Routing (PBR) on Cisco Routers: Complete Configuration Guide
Normal IP routing makes one decision for every packet: look at the destination address, check the routing table,…
How to Create and Apply Route Maps on Cisco Routers: Filtering, Redistribution, and PBR
Route maps are one of those Cisco IOS features that quietly show up everywhere once you start looking…
How to Configure Dynamic NAT on Cisco Routers: Complete Setup and Configuration Guide
Network Address Translation is one of those technologies that quietly keeps the entire internet functioning, given how few…
How to Set Up NAT Overload (PAT) on Cisco Routers: Port Address Translation Configuration
If you’ve ever set up internet access for a home router, a small office, or an enterprise branch,…
How to Configure Port Forwarding on Cisco Routers: Static NAT and Access Rules Setup
At some point, almost every network needs to expose an internal service to the outside world — a…