Subject: RE: Questin on SE Reservation Merging

From: "Jiang, Donghua (Donghua)" <[email-masked]>
Date: Wed, 8 Aug 2001 13:28:24 -0400

Adithya,

I think R1 will send SE(s1, s2, 4B) and SE(s3, 4B) upstream.

It should be ok as in SE reservation we assume that not all the senders will
send at the same time.  Otherwise, you will have to make FF reservation.

Regards,
Jane

-----Original Message-----
From: Adithya Bhat [mailto:[email-masked]]
Sent: Wednesday, August 08, 2001 8:57 AM
To: [email-masked]
Cc: [email-masked]; bhat, adithya
Subject: Re: Questin on SE Reservation Merging

in my previous mail the diagram got messed up,
am attaching the image of the diagram with this mail.
my question remains the same.

Thanks for your time

Adithya

Adithya Bhat wrote:

> Hi all,
>
> I have the following SE reservation senariao
>
>                                                   SE ---- s1 s2 s3 ( 4B)
> : reservation sent  to S1 from S2 after merging.
>                     ____________                        ___________
>                     |                            |  4B
> |                        |  2B          SE ---- s1 s3 (2B)   R1
> s1,s 2  ------|
> |-----------------|                        |------------------
>                     |           RU1         |
> |           RU2     |
>                     |                            |                SE
> |                        |  4B            SE ----s1 s2(4B)  R2
>  s3        -----|                            |
> |                        |------------------
>                     |____________|                       |__________|
>
> Reservation on the link between RU1 and RU2 is 4B , and this reservation
> is shared by s1 s2 and s3.
>
> But according to the reservation made by receiver  R2 the reservation
> should be shared between s1 and s2 only.
>
> In the above case does the Receiver R2 get the QoS needed ?  (because it
> has to share the bandwidth with another sender s3)
>
> or am i missing some thing here ?
>
> Throw some light on this.
>
> Thanks in advance
>
> Adithya