HSRP: Missing Uplink Tracking
Gateway redundancy only helps when the active router can still forward beyond the local VLAN. This lab turns a partial upstream outage into a precise HSRP tracking exercise.
The problem
R1 remains the active HSRP gateway after its ISP-facing interface fails. Clients continue to send it traffic because the local VLAN is healthy, but it has lost upstream connectivity and no priority decrement triggers R2 takeover.
What you'll practice
- Separate LAN gateway health from upstream reachability
- Read HSRP priority and tracking state
- Configure interface/object tracking
- Verify failover during an uplink loss
The topology
Two HSRP routers share a user VLAN and each has an upstream path. R1 is preferred until its tracked uplink fails.
Commands to run yourself
The real diagnostic commands for this lab, copy-paste ready. Run these in the same order to reproduce the investigation on your own session.
show standbyshow trackshow ip interface briefTopology diagram
Frequently asked
Is this aligned to CCNA practice?
Yes. It focuses on configuration, verification, and troubleshooting skills covered by the CCNA-level technology domain named on this lab.
Ready to run this lab yourself?
No setup, no image sourcing. Book a session or ask for a live demo.