Re: IPv4 TOS vs DSCP

2020-11-12 Thread Stephen Hemminger
On Thu, 12 Nov 2020 10:09:54 +1000 Russell Strong wrote: > Hello, > > After needing to do policy based routing based on DSCP, I discovered > that IPv4 does not support this. It does support TOS, but this has > never been upgraded to the new ( now quite old ) DSCP interpretation. > > Is there a

IPv4 TOS vs DSCP

2020-11-11 Thread Russell Strong
Hello, After needing to do policy based routing based on DSCP, I discovered that IPv4 does not support this. It does support TOS, but this has never been upgraded to the new ( now quite old ) DSCP interpretation. Is there a historical reason why the interpretation has not changed? I could copy