Browsing Tag
cisco
82 posts
How to Configure IP SLA (Service Level Agreement) on Cisco Routers for Network Performance Monitoring
There’s a particular kind of network outage that’s worse than a full link failure — the “it’s slow…
How to Configure Dynamic ARP Inspection on Cisco Switches for ARP Spoofing Prevention
I once watched a man-in-the-middle attack unfold on a lab network during a security assessment, and it was…
How to Configure SNMP (Simple Network Management Protocol) on Cisco Devices for Network Monitoring
Every serious network monitoring platform I’ve ever worked with — whether it’s a full-blown NMS or a homegrown…
How to Configure DHCP (Dynamic Host Configuration Protocol) on Cisco Routers: Complete Setup Guide
I’ve configured DHCP on Cisco routers more times than I can count, and it’s one of those features…
How to Set Up Port Security on Cisco Switches: MAC Address Limiting and Violation Actions
Port security was one of the first switch security features I ever configured, and it’s still one of…
How to Configure GLBP (Gateway Load Balancing Protocol) on Cisco Routers: Complete Guide
If you’ve worked with HSRP or VRRP before, you already know their biggest limitation: only one router in…
How to Configure VRRP (Virtual Router Redundancy Protocol) on Cisco Routers: Failover Setup
Every time I’ve worked in a multi-vendor environment — Cisco routers next to Juniper or Arista boxes —…
How to Configure HSRP (Hot Standby Router Protocol) on Cisco Routers: Redundancy and Failover Guide
The very first redundancy protocol I ever configured on a production network was HSRP, and honestly, it’s still…
How to Configure BGP on Cisco Routers: Complete Border Gateway Protocol Setup Guide
BGP is the protocol that intimidated me the most when I was starting out, and honestly, it should…
How to Configure EIGRP on Cisco Routers: Enhanced Interior Gateway Routing Protocol Setup
Of all the interior routing protocols I’ve deployed, EIGRP is the one that consistently surprises people with how…