I'm currently trying to setup some scheduling priority for SIP and associated RTP trafic on my router.
I would have several questions :
1) Is the DSCP value automatically set by Siproxd ?
2) is the DSCP value set both on SIP and RTP packets ?
3) What is the DSCP value ? (I mean, its 0x.. value)
Thanks for your help,
Sami Dalouche
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
The example configururation file says:
# DSCP value for sent RTP packets
# The Differentiated Service Code Point is a selector for
# router's per-hop behaviours.
# RFC2598 defined a "expedited forwarding" service. This service
# is designed to allow ISPs to offer a service with attributes
# similar to a "leased line". This service offers the ULTIMATE IN LOW
# LOSS, LOW LATENCY AND LOW JITTER by ensuring that there is always
# sufficent room in output queues for the contracted expedited forwarding
# traffic.
# The Expedited Forwarding service has a DSCP of 46.
# Putting a 0 here means that siproxd does NOT set the DSCP field.
# Siproxd must be started as root for this to work.
#
#rtp_dscp = 46
==>
1) Is the DSCP value automatically set by Siproxd ?
The config option "rtp_dscp" can be used to tell
siproxd what DSCP value to set for RTP packets.
Default is 0, which means: don't set DSCP value.
2) Is the DSCP value set both on SIP and RTP packets ?
Only RTP packets get the DSCP value set.
3) What is the DSCP value ? (I mean, its 0x.. value)
As stated in 1), the value to be set is user-configurable. The example in the config
file recommends the value 46 (decimal) which
corresponds to the Expedited Forwarding service
as mentione din RFC 2598.
/Thomas
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hi,
I'm currently trying to setup some scheduling priority for SIP and associated RTP trafic on my router.
I would have several questions :
1) Is the DSCP value automatically set by Siproxd ?
2) is the DSCP value set both on SIP and RTP packets ?
3) What is the DSCP value ? (I mean, its 0x.. value)
Thanks for your help,
Sami Dalouche
Hi,
The example configururation file says:
# DSCP value for sent RTP packets
# The Differentiated Service Code Point is a selector for
# router's per-hop behaviours.
# RFC2598 defined a "expedited forwarding" service. This service
# is designed to allow ISPs to offer a service with attributes
# similar to a "leased line". This service offers the ULTIMATE IN LOW
# LOSS, LOW LATENCY AND LOW JITTER by ensuring that there is always
# sufficent room in output queues for the contracted expedited forwarding
# traffic.
# The Expedited Forwarding service has a DSCP of 46.
# Putting a 0 here means that siproxd does NOT set the DSCP field.
# Siproxd must be started as root for this to work.
#
#rtp_dscp = 46
==>
1) Is the DSCP value automatically set by Siproxd ?
The config option "rtp_dscp" can be used to tell
siproxd what DSCP value to set for RTP packets.
Default is 0, which means: don't set DSCP value.
2) Is the DSCP value set both on SIP and RTP packets ?
Only RTP packets get the DSCP value set.
3) What is the DSCP value ? (I mean, its 0x.. value)
As stated in 1), the value to be set is user-configurable. The example in the config
file recommends the value 46 (decimal) which
corresponds to the Expedited Forwarding service
as mentione din RFC 2598.
/Thomas
Thanks for the information !
Regards,
Sami Dalouche