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Re: setting the type of service (TOS) bit on HP-UX network apps

 
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Mike Graves
New Member

‎11-21-2001 04:21 AM

‎11-21-2001 04:21 AM

setting the type of service (TOS) bit on HP-UX network apps

Can anyone tell me how I can set the TOS bit
on network packets leaving a HP-UX box via an API. Question comes from customer interested in diffserv. Thanks in advance.
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Steven Gillard_2
Honored Contributor

‎11-21-2001 06:25 AM

‎11-21-2001 06:25 AM

Solution

Re: setting the type of service (TOS) bit on HP-UX network apps

You need to use the setsockopt() system call with a level of IPPROTO_IP and the optname IP_TOS.

See "man 7 ip":

IP_TOS (unsigned char) Sets the IP Type of
Service. Allowable values for optval
are 4 for high reliability, 8 for high
throughput, and 16 for low delay. Other
values will not return an error, but may
have unpredictable results. Default:
zero.

Cheers,
Steve
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