cloudstack: No have Virtual Routers , secondary-vm and consoleproxy-vm agent state wrong

ISSUE TYPE

• Other

COMPONENT NAME

 VR

CLOUDSTACK VERSION

4.15.0

CONFIGURATION

OS / ENVIRONMENT

SUMMARY

STEPS TO REPRODUCE

I split six virtual machines from a single physical machine to install the highly available CloudStack，
The machine allocation is as follows
10.13.56.6 manager1
10.13.56.7 manager2
10.13.56.8 client1
10.13.56.9 client2
10.13.56.10 ha1
10.13.56.11 ha2

 /24 network
basic network model
single netCard 

I have a virtual IP 10.13.56.88 for cloudstack HA
I install cloudstack 4.15 

when I add client1 and client2 to cloudstack compute nodes successfully，
I saw system VMs agent state is wrong  and Virtual Routers not automatically created

so I login v-1-VM and s-2-VM， They can `Ping` each other
but they unable to `Ping` gateway (10.13.56.254) successfully

I don't know what happend , I have successfully run CloudStack and managed KVM on three physical machines using the tutorial
So what's wrong with me? Please help me, thanks

EXPECTED RESULTS

s-2-VM and s-2-VM agent state is up 
and Virtual Routers automatically create

ACTUAL RESULTS

system VMs agent state is wrong  and Virtual Routers not automatically created