Symptom

EIGRP puts all associated Virtual-Access interfaces into passive mode once we modify EIGRP hello and hold timers on parent Virtual-Template interface.

Conditions

- EIGRP setup over Virtual-Access interfaces - nondefault EIGRP timers are used - This problem is specific to eigrp classic mode interface Virtual-Template1 type tunnel ip unnumbered Loopback1 ip mtu 1400 ip hello-interval eigrp 1 30 <<<nondefault eigrp timers ip hold-time eigrp 1 90 ip tcp adjust-mss 1360 mpls ip tunnel path-mtu-discovery tunnel vrf xxxx tunnel protection ipsec profile xxxx ! router eigrp 1 passive-interface default no passive-interface Virtual-Template1 redistribute eigrp 1 subnets

Workaround

Under "router eigrp" instead of using "passive interface default" use passive interface for specific interfaces.

Further Problem Description