Ping & TOS Byte

[Keith French]

In Windows XP you can ping with the -v option to set the TOS byte in
decimal. However, it does not actually set the TOS byte at all. Anyone know
of a ping utility that will do this within XP?

 

[Alan J. McFarlane]

In Windows XP you can ping with the -v option to set the TOS byte in
decimal. However, it does not actually set the TOS byte at all.
Anyone know of a ping utility that will do this within XP?

Its probably actually that _no_ program is allowed to set the TOS value.
One is now meant to use the GQOS API for this sort of thing. See the MSKB
article below, it describes this and also provides a registry value to
re-enable direct TOS byte setting.

"248611 - Setsockopt Is Unable to Mark the Internet Protocol Type of Service
Bits in Internet Protocol Packet Header"
http://support.microsoft.com/?kbid=248611