Client communication with media but not with master

Hi Team,

Till now in backup infrastrcutre, i have seen client , master and media server and storage devices can communicate with each other.

there is one query raised.

what if i have situation like;

Clients and media server can communicate 

Media and master server can communicate.

but

I wont be ablt to ping client from master server.

Will backup work in these kind of scenarios.