Cisco – Hye Hacker

Automated Internet Failover Using IP SLA and Object Tracking

Diagram showing a switch's primary path through a firewall, ISP, and internet, versus its automatic backup path through the datacenter via BGP when IP SLA object tracking detects a failure

The Scenario A distribution switch has a static default route pointing at a local firewall: Under normal conditions, that route sends internet-bound traffic straight to the firewall, which hands it off to the ISP. Simple, and it works. Now the ISP circuit behind that firewall goes down. The firewall itself is still powered on andContinue reading “Automated Internet Failover Using IP SLA and Object Tracking”

Cisco SD-Access VRF Segmentation: How to Isolate Device Groups Across a Multi-Site SD-WAN Fabric Using VRF and BGP

A complete step-by-step guide to extending network segmentation across a Cisco SD-Access and SD-WAN environment using VRF and BGP — using an IP camera network as the working example, but applicable to any isolated device group.

Setting up a new Cisco switch

Quick reference guide for initial Cisco switch setup via CLI. Covers enable mode, IP addressing on VLAN 1, VTY password configuration, and enabling SSH access.

Set up a SSH server on a Cisco switch

How to configure an SSH server on a Cisco switch. Covers domain name setup, RSA key generation, local user authentication, and locking down VTY lines to SSH only.