[Cialug] SOT: multicast and TTL
Nathan C. Smith
nathan.smith at ipmvs.com
Thu Mar 18 09:40:24 CDT 2010
I'd like to multicast video on the local segment, but I don't want it going any farther or flooding my router, etc.
The TTL (time to live) setting is to determine how many router hops a multicast packet can take - at least this is my understanding. If you want the packet to go no further than your subnet, do you set TTL to 0 or 1? Or does it matter?
Also, Wouldn't a firewall with egress filtering turned up prevent high port number multicast packets from going out?
(Do you think if the person that wrote the RFP that introduced TTL was a BladeRunner fan it would have been called TTD for Time to die?)
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