Unable to self ping when C9300 Openflow mode is activated

[kkyoon]

I would like to quest about the following context

Equipment name: C9300-24T-E

Firmware: IOS XE 16.09.08

 : Self ping failed on reboot after boot mode openflow command.

However, Self ping was possible on reboot after inputing no boot mode openflow command.

Why is self ping impossible?

[balaji.bandi]

Can you post below output :

#show ip route
#show run interface loopback0
#show run openflow

[kkyoon]

The result is this.

Switch#show ip route
Extended Host Mode is enabled
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

Gateway of last resort is not set

      1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        1.1.1.0/24 is directly connected, Loopback0
L        1.1.1.1/32 is directly connected, Loopback0

Switch#show run interface loopback 0
Building configuration...

Current configuration : 80 bytes
!
interface Loopback0
 ip address 1.1.1.1 255.255.255.0
 no ip route-cache
end

Switch#show run openflow
feature openflow

[kkyoon · Accepted solution]

The problem has been resolved. The cause is not clear, but when Openflow mode is enabled, it seems to send packets to the controller to process them unconditionally. This means that the switch does not process packets because the Normal Output action is not supported.

Therefore, only the Gi0/0 port (mgmt-vrf) is available to the interface that you want to communicate with the controller, and the Gi0/0 port is repeatedly turned off with an empive error message when communicating between different network bands. The gi0/0 port ip band must match the controller's ip band.