New post on ignaonline.com: Cisco IOS-XE IP SLA and Object Tracking: Automated Dual-ISP Failover

Most dual-ISP configurations rely on a floating static route that only kicks in when you manually remove the primary — but what happens when the physical link stays up but the ISP loses internet reachability? This post covers building a probe-verified automated failover system using Cisco IOS-XE IP SLA and Object Tracking.

Topics covered:

• TCP Connect and ICMP Echo probe configuration
• Object Tracking with dampening delays to prevent flapping
• Floating static routes tied to tracking objects
• Enhanced Object Tracking with boolean AND/OR logic
• EEM integration for failover event logging
• UDP Jitter probes for WAN performance monitoring

Read the full post →