gateway ping and ssh issue

[peter_kimani]

Hello checkmates 

i migrated and changed over my system from r77.30 to r80.10 manager and upgraded two of my gateways from 4800 to 5800

i can be able to ping one of the two gateways from internal netwoks but cant ping the other 

i retained eth 7 to be sync , instead of using snc interface , could that be the issue

i cannot also ssh any of the two gateways