Re: OT: QOS on Signaling Traffic for Mobile operators, SIGTRAN,

Dear Mark,
                   Many thanks for your advise.
                   Its wired for me when i see a queue holding Voice &
signaling with priority 50 % lol

                   But i think this may be the solution, Its really
different , as i used to work in a SP , where VRFs are the customer.
                   Where inside the Mobile/GSM Teleco SP , the VRFs
implemented are the services itself. :)

So Guys any more advise/experience in this issue.

Thanks & B.Regards
Ahmed Elhoussiny, CCIE # 21988
Network Consultant & Cisco academy Instructor.

On Mon, Apr 13, 2009 at 3:20 PM, Marko Milivojevic <markom_at_markom.info>wrote:

> Implementing QoS for mobile services can be rather difficult, as you
> have noticed. Also, have in mind tha even though you can specify
> multiple LLQ configurations, they are serviced by the same queue on
> most platforms.
>
> What you need to do here is forget what you have learned about
> "enterprise" QoS and switch your mind into SP/telco mode. Signaling
> and voice are essentially the same thing, QoS-wise. I would suggest
> marking both with EF/EXP-5/COS-5 and service them using one generous
> LLQ.
>
> Don't forget that you don't have as many marking options when you deal
> with MPLS (EXP is only 3 bits).
>
> --
> Marko
> CCIE #18427 (SP)
>
> On Mon, Apr 13, 2009 at 12:26, Ahmed Elhoussiny <aelhoussiny_at_gmail.com>
> wrote:
> > Hello Radio,
> > Thanks , but i think if i used priority for the
> > signaling queue i will be using 2 queues ( Voice & signaling),
> > 2 LLQs in CBWF Or to be more specified i will be using
> 2
> > priority queues on MDRR for the GSR & CRS-1
> >
> > I remember reading about this in one of my QOS references, but did it
> > scale well with you, did it give you the preformance for both voice &
> > signaling ?
> >
> > The Signaling requires min delay, RTD of 50 ms & 100 ms. !!!!!
> >
> > Thanks in advance.
> >
> > *Ahmed Elhoussiny,CCIE # 21988*
> >
> > On Mon, Apr 13, 2009 at 1:22 PM, Radioactive Frog <pbhatkoti_at_gmail.com
> >wrote:
> >
> >> Normally signaling should be reserved using "bandwidth 512000' (for
> >> example) command and the RTP stream should be given priority using
> >> 'PRIORITY" command.
> >> I've worked on many softswtich so they may be having both RTP and
> Signaling
> >> terminated in them.
> >>
> >> As you've mentioned HLR signaling & replication - it will depend what
> are
> >> the maximum delay/requirement for that perticular protocol. If you are
> not
> >> sure about the perticular protocol behaviour then it would be safe to
> put
> >> all signaling traffic in priority queue e.g. using "priority 512000"
> >> command.
> >>
> >> HTH
> >> -frog
> >>
> >>
> >> On Mon, Apr 13, 2009 at 8:57 PM, Ahmed Elhoussiny <
> aelhoussiny_at_gmail.com>wrote:
> >>
> >>> Dear all,
> >>> I'm working on a Mobile Operator project , to migrate his
> old
> >>> network to an IP/MPLS NGN .
> >>> While making the QOS implementation & design , i was
> >>> gathering the information for the traffic classification & marking.
> >>>
> >>> And guess what, the signaling traffic is requring very low
> RTD
> >>> , more than the VOICE itself, customer is requesting to give the
> Signaling
> >>> more priority that the VOICE traffic.
> >>>
> >>>
> >>> The signaling traffic I'm talking about is the signaling
> >>> between the soft-switches named SIGTRAN & the HLR signaling &
> replication
> >>> named as GDMP+GMPS
> >>>
> >>> So was thinking about having 2 LLQs.or having Both Traffic in same
> Queue.
> >>>
> >>> Have any one faced this before, or seen any best practise for this
> >>>
> >>> *Thanks & B.Regards
> >>> Ahmed Elhoussiny, CCIE # 21988 (R&S)
> >>> Network Consultant & Cisco Academy Instructor*
> >>>
> >>> *' Every class i teach , i learn something new myself '*
> >>> *http://twitter.com/aelhoussiny**
> >>> **www.linkedin.com/in/aelhoussiny*
> >>>
> >>>
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Received on Mon Apr 13 2009 - 16:51:29 ART