[asterisk-users] switch QOS requirements

[Al lists]

Very Nice!
Its much more reliable than translating DSCP to COS by switch which i'm not
sure which switch does that and which one doesn't, and how they do it
considering some gray area when you translate from DSCP to COS.


On Feb 4, 2008 5:26 PM, Jared Smith <jsmith at digium.com> wrote:

> On Sun, 2008-02-03 at 22:42 -0700, Al lists wrote:
> > Theoretically, setting TOS value ( these days called DSCP) wont change
> > anything in switch behavior, unless you are using Layer 3 switches.
> > What makes a difference in a switch is COS bits, and i'm not sure how
> > asterisk sets that.
>
> In Asterisk 1.6, you will be able to set both the COS and TOS values.
> The sample sip.conf in the Asterisk 1.6 betas contains the following, to
> show you just how much you can adjust things :-)
>
> ;tos_sip=cs3                    ; Sets TOS for SIP packets.
> ;tos_audio=ef                   ; Sets TOS for RTP audio packets.
> ;tos_video=af41                 ; Sets TOS for RTP video packets.
> ;tos_text=af41                  ; Sets TOS for RTP text packets.
>
> ;cos_sip=3                      ; Sets 802.1p priority for SIP packets.
> ;cos_audio=5                    ; Sets 802.1p priority for RTP audio
> packets.
> ;cos_video=4                    ; Sets 802.1p priority for RTP video
> packets.
> ;cos_text=3                     ; Sets 802.1p priority for RTP text
> packets.
>
>
> --
> Jared Smith
> Community Relations Manager
> Digium, Inc.
>
>
>
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