Hi, I'm using a schneider M340 modicon PLC with some STBs NIP2212 in a big gigabit optic fiber ring topology network !!!
Everything is working fine !
But when testing the redundancy of the ring network (by disconnecting network segments) and the packets have to travel by the longest side of the ring (lot of network nodes) the communications are lost !!
Through packet monitoring, we believe that the default TTL value (time to live) of 10 is not enough (more than 10 jumps) !!!
I have contacted the local schneider support and they said that I can't change the TTL of TCP packets :O !!!
Which is the best way to solve this problem !?!
Thank you !!
Everything is working fine !
But when testing the redundancy of the ring network (by disconnecting network segments) and the packets have to travel by the longest side of the ring (lot of network nodes) the communications are lost !!
Through packet monitoring, we believe that the default TTL value (time to live) of 10 is not enough (more than 10 jumps) !!!
I have contacted the local schneider support and they said that I can't change the TTL of TCP packets :O !!!
Which is the best way to solve this problem !?!
Thank you !!