Symptom
DIA Tracker for Cellular interface is Down, however the IP NAT route persists in the Routing Table and DIA traffic is blackholed.
C1111-8PLTEEA#show endpoint-tracker
Interface Record Name Status RTT in msecs Probe ID Next Hop
Cellular0/2/0 tracker1 Down Timeout 0 0.0.0.0
C1111-8PLTEEA#show sdwan policy service-path vpn 1 interface Vlan12 source-ip 10.62.0.12 dest-ip 209.165.201.8 protocol 1
Next Hop: Blackhole
C1111-8PLTEEA#show ip route vrf 1
Routing Table: 1
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, m - OMP
n - NAT, Ni - NAT inside, No - NAT outside, Nd - NAT DIA
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
H - NHRP, G - NHRP registered, g - NHRP registration summary
o - ODR, P - periodic downloaded static route, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
& - replicated local route overrides by connected
Gateway of last resort is 0.0.0.0 to network 0.0.0.0
n*Nd 0.0.0.0/0 [6/0], 00:02:43, Null0
Conditions
- DIA configured with a IP NAT route.
- DIA interface is Cellular, configured with a NAT DIA Tracker.
- Boot up the router without SIM Card in the Cellular interface.
Workaround
- Shutdown the Cellular interface.
