Hi ,
I presume that the "ip rtp priority 16384 16383 64"
would also reserve 64 kbps of bandwidth for voice
calls.I am still not clear about how CBWFQ would be
different than this.
Regds
Amit
>
> -----Original Message-----
> From: Brian [SMTP:[EMAIL PROTECTED]]
>
> Sent: Wednesday, June 06, 2001 10:04 AM
> To: [EMAIL PROTECTED]
>
> Subject: Re: VoIP QoS [7:6586]
>
> Can you elaborate on this a little? I mean LLQ is
> basically PQ-CBWFQ, and
> offers a CBR priority queue for the voice to use.
> With CBWFQ your voice
> traffic is going to be weighted based on class, just
> like other traffic, and
> even in a best case scenerio could still get some
> packet trains causing
> unpredicatable latency..............or are you
> recommending CBWFQ solely
> based on bugs in LLQ?
> Thanks,
>
> Brian
>
>
> On Mon, 4 Jun 2001, Will wrote:
> > Yes, CBWFQ is the way to go....
> >
> > ""Tony Medeiros"" wrote in message
> > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]..
> .
> > > The Cisco AVVID guru's just told me to bail on
> LLQ and
> go to CBWFQ
> > instead.
> > > Problems with code or just works better
> according to
> them.
> > > Tony
> > > #6172
> > >
> > > ----- Original Message -----
> > > From: Michael L. Williams
> > > To:
> > > Sent: Sunday, June 03, 2001 8:56 AM
> > > Subject: Re: VoIP QoS [7:6586]
> > >
> > >
> > > > I thought 768Kbps was the minimum you
> needed
> NOT to use LFI....... at
> > > > 768Kbps, it takes ~15ms for a 1500byte
> frame
> to be put on the line. So
> > > even
> > > > if a couple 1500-byte ethernet frames came
> between your voice frames,
> it
> > > > would wouldn't be too bad....... but
> depending
> on the queuing method,
> > even
> > > > at 768Kbps, the regular ethernet traffic
> could
> indeed cause a
> > > problem.......
> > > > you could use a priority queue to make sure
> that all the voice traffic
> > > > *always* goes through before any of the
> other
> traffic, but from what I
> > > > understand the LLQ is much better for these
> purposes.
> > > >
> > > > Mike W.
> > > >
> > > > "Brian" wrote in message
> > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]..
> .
> > > > > What codec are you using? If the
> speed of the link is T1 or less I
> > > would
> > > > > definitly do LFI. Otherwise large
> packets (1500 bytes) could be
> > starving
> > > > > the voice from the minimum latency
> that it needs.
> > > > >
> > > > > Brian
> > > > >
> > > > >
> > > > > On Thu, 31 May 2001, Amit Gupta
> wrote:
> > > > >
> > > > > > Hi Everybody,
> > > > > >
> > > > > > I have configured the following
> parameters on the
> serial interface for VoIP.The
> quality of the calls is
> > > > not very good during working hours
> you can feel some delay/small interruptions while
> using it.
> > > > > >
> > > > > > interface serial 0
> > > > > > ip tcp header-compression
> iphc-format
> > > > > > no ip mroute-cache
> > > > > > no fair-queue
> > > > > > ip rtp header-compression
> iphc-format
> > > > > > ip rtp priority 16384 16383 64
> > > > > >
> > > > > > Could anybody suggest any other
> alternative to improve
> > > > > > the quality.
> > > > > > Will removing the compression help
> ?
> > > > > > Do I need to have something like
> Link Fragmentation
> > > > > > and Interleaving configured.
> > > > > >
> > > > > > Thanks
> > > > > >
> > > > > > Amit
> > > > > >
> > > > > >
> > > > > >
> > > > > >
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> Parria
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>
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> Brian Feeny,CCDP,CCNP+VAS Scarlett Parria
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> Netjam, LLC http://www.netjam.net
>
> 333 Texas St. VISA/MC/AMEX/COD
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