Author Topic: More geeky stuff, network-related  (Read 3277 times)

  • Offline Serious

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Re:More geeky stuff, network-related
Reply #15 on: April 04, 2006, 14:49:40 PM
Quote from: M3ta7h3ad

Serious your answering from your experiences with crap kit.

Read other peoples crap kit. Actually there have been quite a few grumbles about it in professional computer magazines as well as my own experience in an area where several Wi-Fi networks tried to co-reside.

Quote from: BXGTi16V

Multiple physical paths between two nodes will lead to a spanning tree loop - this is a situation that is to be avoided - this brings networks down.


The internet? I know you have to be bloody careful when writing software, which is no longer my area unfortunately, but it has been done.

Re:More geeky stuff, network-related
Reply #16 on: April 04, 2006, 15:21:35 PM
Software has nothing to do with it. Sounds like your confusing deadlocking with this (deadlocking = threads trying to access the same resources at the same time)

What BX is talking about is routing tables.

If you have a spanning tree loop you will end up with each router constantly flooding the network with packets saying "im the right router" and end up with a constantly updating route table. No packets will ever get delivered and youll have a crap load of arp packets flying around.

If you want to learn some decent network topology gubbins I would be quite happy to pm you a link to a lecturers notes however they wont make much sense without the talk that accompanies them.

Madmax: Youve said what im saying :) the max is not 3. :D lol.

  • Offline madmax

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Re:More geeky stuff, network-related
Reply #17 on: April 04, 2006, 15:30:36 PM
Quote from: Serious
....
Quote from: BXGTi16V

Multiple physical paths between two nodes will lead to a spanning tree loop - this is a situation that is to be avoided - this brings networks down.


The internet? I know you have to be bloody careful when writing software, which is no longer my area unfortunately, but it has been done.


simplest example of spanning tree loop is getting two or three switches and wire them up so they form a loop.... A to B, B to C, C to A.

et. voila, instant chaos until one of the switches realises that its got a loop on two ports and switches one or both of them off... if it realises that is....



  • Offline Mark

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Re:More geeky stuff, network-related
Reply #18 on: April 04, 2006, 15:35:09 PM
9/10 the port just flaps - and rather annoyingly it flaps with a vlan interface

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