ping with dscp windows ignore ecn-ce field

[Guest Dan]

when I ping from machine A to B:

>ping 121.1.1.1 -v 0x47

 

windows keeps delivering the ToS field as 0x46 in the IP datagram. This is

what Wireshark reported. However, I didn't have any problem when pinging

from a linux box. It appears that the 2nd Hex will always be round off to

the lower even number when pinging from windows machine, e.g:

 

0x27 becomes 0x26

0x15 becomes 0x14

0xA3 becomes 0xA2

 

 

and so on....

 

When looking closely in Wireshark, this is this due to the last bit of the

QoS because it's related to ECN-CE ....whatever, this means....does anyone

know how can I turn on this function? So I can set the traffic all the way

from 0 to 255 without any limitation?

 

 

and secondly, starting with windows 2000 ....has microsoft updated the QoS

filed to DSCP? Because when I look at ping /?, it still showing QoS filed as

ToS and eveyrone knows that ToS is obsolete.