The question in the original post about sending and receiving hello packets imply that the router would be using a protocol like OSPF or EIGRP. And in fact I believe that the results in the environment in the drawing would be the same if the protocol was RIP. If the serial interface is configured as passive then no hello is sent (and for RIP no update is sent). So for all protocols (RIP, OSPF, EIGRP) the result is that neither router would have a route to the LAN of the other router.
The original post also had some questions about the ability of PC1 and PC2 to communicate. The answer depends on an understanding of the environment. In particular it depends on whether any other routing information is present. If the routers had static routes to the LAN of the other router (for example) then the PCs would communicate quite successfully. They could ping, or telnet, or exchange data quite well. Passive interface does not stop data packets from going through the interface. But passive interface stops dynamic routing protocols from exchanging information over the interfaces. If there were no routes to the other LAN then, obviously, the PCs would not be able to communicate with each other.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.