Re: [RE] Sariowan comments to DRAFT Objectives 09/30/2004
1) The source has queuing requirements (after all, it may already be
transmitting another packet). Any intervening bridges will add queuing since
the appropriate output port(s) may be busy. There will be queuing and
delays.
2) *and* we forgot to add one more line in the objectives: Support for
multiple bridges in the network (max hop count TBD, but probably limited to
whatever gives us our worst case network delay time of 10ms) ... if we
assume 250us per bridge, that still allows 40 hops ... probably good enough
even for Bill Gates' house.
On 9/30/04 7:51 PM, "Henry Sariowan" <Henry.Sariowan@PATH1.COM> wrote:
> With time-slotting overlay over Ethernet and pre-determined schedules
> for all synchronous traffic, the system/protocol should be designed such
> that isochronous packets have a maximum of 1 packet delay/queueing per
> hop. In fact, if "cut-through" switching is implemented, the
> delay/queuing will just be size of the Ether header.
>
> Henry
>
> -----Original Message-----
> From: owner-stds-802-3-re@IEEE.ORG [mailto:owner-stds-802-3-re@IEEE.ORG]
> On Behalf Of Michael D. Johas Teener
> Sent: Thursday, September 30, 2004 4:19 PM
> To: STDS-802-3-RE@listserv.ieee.org
> Subject: Re: [RE] Sariowan comments to DRAFT Objectives 09/30/2004
>
> 1) What do you mean by "zero queuing for isochronous traffic"? All
> traffic is queued in some way ... perhaps you mean "deterministic and
> minimal queuing for isochronous traffic"?
> 2) Interesting question, but I think the attempt will be made to provide
> the facilities so Ethernet can provide a backbone for 802.11e-enabled
> A/Ps that preserves all the QoS services.
>
>
> On 9/30/04 6:07 PM, "Henry Sariowan" <Henry.Sariowan@PATH1.COM> wrote:
>
>> Looks good.
>>
>> Additional comment/question:
>> 1. Consider adding: "Zero queueing for isochronous traffic"
>> 2. What is it meant by "isochronous bridging to 802.11"?
>>
>> Henry Sariowan
>> Path 1 Network Tech.
>>
>
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