Symptom

After upgrading an IOS-XE router in controller-mode from 17.3.5 to 17.6.4, with EIGRP configured through template, the network command is added twice into the configuration upon boot and then removed completely by vManage. This disables the interfaces from participating in EIGRP and essentially causes an outage. Check for this symptom via the commands: show ip eigrp vrf interfaces show ip eigrp vrf neighbors show ip protocols vrf Routing Protocol is "eigrp 1" Outgoing update filter list for all interfaces is not set Incoming update filter list for all interfaces is not set Default networks flagged in outgoing updates Default networks accepted from incoming updates EIGRP-IPv4 VR(eigrp-name) Address-Family Protocol for AS(1) VRF(10) Metric weight K1=1, K2=0, K3=1, K4=0, K5=0 K6=0 Metric rib-scale 128 Metric version 64bit Soft SIA disabled NSF-aware route hold timer is 240 EIGRP NSF disabled NSF signal timer is 20s NSF converge timer is 120s Router-ID: Topology : 0 (base) Active Timer: 3 min Distance: internal 90 external 170 Maximum path: 4 Maximum hopcount 100 Maximum metric variance 1 Total Prefix Count: 0 Total Redist Count: 0 Automatic Summarization: disabled Maximum path: 4 Routing for Networks: <<<<<<<<<<NO NETWORK HERE Routing Information Sources: Gateway Distance Last Update Distance: internal 90 external 170 sh run | sec router router eigrp eigrp-name ! address-family ipv4 unicast vrf 10 autonomous-system 1 ! af-interface GigabitEthernet3 authentication mode md5 authentication key-chain eigrp_keychain exit-af-interface ! <<<<<<<<<<NO NETWORK HERE topology base exit-af-topology exit-address-family

Conditions

1. Cisco IOS-XE SDWAN Router is upgraded from 17.3 to 17.6 code. 2. EIGRP neighborship is down and doesn't recover after the upgrade. 3. Network command is removed from the configuration by vManage.

Workaround

Remove the feature template for EIGRP and then add it back. OR Move device to CLI Mode and add the network command back to the configuration. OR Reload the device.

Further Problem Description