[asterisk-users] switch QOS requirements

[Al lists]

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.
I guess to be safe, you would need to create 2 VLANS and in the switch
define on VLAN  as a high priority VLAN.


On Feb 3, 2008 7:06 PM, Michael Graves <mgraves at mstvp.com> wrote:

> On Sun, 03 Feb 2008 22:11:04 +0100, Benny Amorsen wrote:
>
> >"John Williams" <jw.ip.pbx at gmail.com> writes:
> >
> >> We are tearing out legacy PBX and replacing with Asterisk PBX and new
> >> LAN for our 90+ person operation.   Question:  what QOS capabilities
> >> (protocols, etc) does Asterisk support/require in a LAN switch to
> deliver
> >> business grade phone service?  Thanks
> >
> >If you have one switch for the whole network, you're generally fine
> >without QoS. Switches these days can handle full bandwidth on all
> >ports at the same time.
> >
> >Anyway, Asterisk is no different from other PBX's when it comes to
> >QoS. Should it turn out that you actually need it on the LAN, just be
> >sure you set the tos parameters in sip.conf to something that is
> >prioritized by the switch.
>
> It tends to be more of an issue when you're sending calls over a link
> with limited bandwidth. Usually more of a concern in the router.
>
> Michael
> --
> Michael Graves
> mgraves<at>mstvp.com
> blog.mgraves.org
> o713-861-4005
> c713-201-1262
> sip:mjgraves at pixelpower.onsip.com
> skype mjgraves
> fwd 54245
>
>
>
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