under what circumstances would/have direct exchange connections go/have gone - down?
Two main reasons;
1. There is a problem on the telco line. I am referring to a direct point to point line from trading office to clearer. The clearer then has similar point to point lines direct to various exchanges. In my case this is not an IP connection it is on a separate network to avoid any IP contamination. Usually due to some engineer messing around or workmen digging up the road somewhere on the route.
Do not believe it when telcos sales say they are selling an SDH protected circuit on local loop, they are all full of b/s, they just charge you more and the contracts do not pay back anything unless the downtime goes on forever and that is a pittance anyway...rant,rant!
2. The exchange server goes down. This happened in the past because the exchange could not handle the volume of electronic transactions generated by automated trading platforms, particularly the spread traders, which kept cancel/replacing outright orders in many different instruments continuously as the relative price changed. Whenever an electronic exchange does any sort of upgrade it is best to expect the worst and try to be flat overnight. In the past the idiots have tried to run upgrades on things during the session with disastrous consequences. they also lie over the phone when you ask about delays and freezes, it is never their fault and whats more none of them know anything about customer relations. Basically they are on the whole greedy, nasty *******s who charge too much and don't give a toss about the traders who use their services.
What is a direct exchange connection? is it simply the link to an exchange that any Direct market access trader would have?
Can be via IP connection but if you need speed then better have a dedicated point to point link. A couple of years ago I tried to trade over an IP platform for a week and had a 2mb ip connection with only 20:1 contention ratio. It was sh1te. Easyscreen do an IP based exchange product called easyactive trader and a few people I know use that to trade Eurodollars on CME, they think it is OK but still have the direct lines for Liffe and Eurex.
by telco problems - do you mean Internet connection problems?
Telcos are generally a bunch of incompetents when it comes to connection problems. Particularly when you are screaming obscenities down the phone at them while trying to cancel orders with the exchanges on the other line. It is generally accepted that IP has problems at times but a direct connection which is alledged to be SDH protected should not go down so they deserve some presure when that happens...b*stards.
Why would an entire exchange go down to some catastrophe? and when has this happened previously? Would this automatically result in any open trades becoming non-exitable?
This has already been answered. Catastrophes I can accept but some geek who has no risk on the line p1ssing about on the server, that is another matter. Saying all that most of the time everything works just fine. Did have a nasty a few months ago where everything appeared fine but you could not pull any orders, nasty when you are legging. There was also one where only one exchange would not accept orders so when one leg was done elsewhere and went to hit or lift other exchange there was no response. these are unpleasant experiences but fortunately quite rare.