... Most managed switches allow you to 'mirror' the inbound and outbound packets on one port to another port in real time. This allows packet sniffers to...
... Some groups try and create a proper standard, they have to take into account every possiblity eg (ACN), then it take ages to move forward, or some company...
From: "Ian Smith" <ismith@...> ... Ah - managed switches - good things. We need some of them here. They've not been available at a reasonable price at the...
jdow
jdow@...
May 1, 2004 8:23 am
5385
Hi. How can someone use NON realtime protocol like UDP/IP over a NON realtime media like ethernet to transport a realtime stream with extremly hard ...
Hey all, ... Why, isn't this interesting: as I speak, I'm writing my thesis (Industrial engineering in Belgium is equal to a master's). The subject is...
Hello Thomas, Are you talking about RTNET (http://www.rts.uni-hannover.de/rtnet/), or some other protocol ? One way or the other it would be interested to hear...
Erwin (and everyone else), ... Nope. We use a proprietary protocol of an industrial automation specialist company. The reason for this is that it is a tried...
Thomas, Does your protocol put any additional distance and/or network topology constraints over ethernet? How far, for instance, could you run this protocol if...
Ian, The manufacturer advises to maintain the standard Ethernet restrictions. So we can layout the network as if it were for normal TCP/IP. Regards, Thomas...
Hey Thomas, ... This sounds very much like a marketing talk, especially wordings like "far superior". Also just looking at Linux (or similar OS) because it is ...
Erwin (and others), Without wanting to go to deep into the subject I will reply to your mail. If you want to take it any further, maybe we should go off-list...
... No - I said that this does not happen. A switch must speed buffer packets between different speed segments. This basically means queueing them in a FIFO....
... Switches can still effectively get collisions when two incoming packets require access to the same outgoing segment. Broadcast traffic greatly aggravates...
From: "Michael Stickel" <michael@...> ... By simply doing it and keeping the network traffic low. This is a rather tired old straw man argument by people...
jdow
jdow@...
May 1, 2004 5:48 pm
5396
From: "Thomas Nagels" <thomas@...> ... (translated) ... system ... support ... avoid ... Indeed, that is the simplest way that makes it quite feasible to...
jdow
jdow@...
May 1, 2004 6:05 pm
5397
From: "Erwin Rol" <mailinglists@...> ... requirements. ... industry, ... but ... It does, doesn't it. It sounds like it is spending an awful lot of...
jdow
jdow@...
May 1, 2004 6:37 pm
5398
From: "Philip Nye" <philip@...> ... So, again, it either drops packets or drops network speed down to the lower network speed. (I am speaking in terms...
jdow
jdow@...
May 1, 2004 6:42 pm
5399
I might add to all this as I lurk here :), that these are exactly the same issues the realtime multiuser gaming and distributed simulation community has to...
Peter Kennard
peterk@...
May 1, 2004 6:49 pm
5400
... Well nobody complained about it yet :-) But I am not going to make this into a flame war ( although pyrotechnics kind of are part of show control :-). I...
Hey, ... I would love to know how you get 100+ motion controllers to broadcast (as it is a decentralised control system) their status (a lot of info including ...
That isn't a collision, it's just queueing latency. The packets will not 'collide', one will just get put into queue after the other. Not saying that that...
Erwin, ... Sorry, "no can do". I'd like to tell you, but I signed some paper that said... I can't even publish my thesis, so discussing it here is out of the ...
... I support Ian. If you use 1Gb or "switched 100mb" ethernet, the collision domain is effectively reduced to the area between the switch and the endpoint....
So in other words, you have no idea. Remember that ethernet can be driven halfway around the world given the correct physical layer. . . Talk about "Hard RT"...
In spec, there is allowance for 1000Base-T CSMA/CD. In reality, there are no implementations of 1000 Base-T Hubs, so it's moot. It's an interesting question...
I would want to know :) - my guess is it is a proprietary purpose built OS for industrial robotics applications....
Peter Kennard
peterk@...
May 1, 2004 8:17 pm
5408
... I mean that in this case it really is a matter of "if it works for TCP/IP, then it works for us"; of course, the latency will increase as the distance ...
... Hmmm - sort of like the "efficiency of what" question previously. It would seem if you really want guarentees for everything you would use a vary fast net....
Peter Kennard
peterk@...
May 1, 2004 8:38 pm
5410
This is a good one!...
Peter Kennard
peterk@...
May 1, 2004 8:46 pm
5411
... It has little to do with Loren, methinks. You are one of the more network savvy people on the list, even if you do tend to get a bit pedantic (but I mean...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
