Switch in unreachable status in BNA but can be reached vi direct telnet

[ErezR]

Hi

I have a Fabric with 5 FC switches, One on them is shown as unreachable via BNA , but when I connect to it directly everything is up and running. I tried to rediscover but still, the status remains the same. The switch role is Principal. Any idea how to solve this? I do not want to reboot the switch...

Thanks

[Antonio Bongiorno T…]

@ErezR

most probable you are out of range with FOS, Switch Type/Model or BNA

post here exact, FOS Rel. BNA Version and Switch you want to discovery

[ErezR]

The fabric includes 5X 6510. 7.0.2a

status of 4 of them is shown as ok via BNA

1 is unreachable via BNA

all of them was in status ok until a few days ago when one of them is shown as unreachable.

I can telnet to the switch directly and everything is working on it just can't communicate with him vi BNA (14.2.2)