At IRTF, we found another burned out FDDI card and a bad FDDI cable. Since the FDDI hot spare was already being used, we installed a card that was given to us by Proteon as a Demo a long time ago. This card was later found to have intermittent problems and has been swapped out since.
The ring is now operating at full counter-rotating mode.
General administration charge has increased because of decrease in Constructiion Camp use, and resulting decrease in the camp's share of fixed admin costs.
Pui Hin Rhoads added the following comments:
As a reponse to Jim Wright's concern about quality of service (QOS), the central switch in the plan is a 5 gbyte switch. At the edges, facilities worrying about QOS will need to look into routers that will deliver QOS. Whereas all ATM switches claim to deliver QOS, only some routers do, for example, the Cisco router 7000/7500. I am convinved that with our applications and the amount of bandwidth that will be available to us, QOS will not be a concern for a while. However, this is a very important issue. Routers supporting QOS are more expensive than switches. The working group should make the final decision after it has had some time to look at the issue.
This scheme can also be extended to cover equipment not on the common network itself. Some formula could be set up to pro-rate the annual amortized value according to the number of routers rather than the number of facilities participating in the scheme. In other words, a facility with three routers would pay three times the amount paid by a facility with only one router. Finally, all equipment must be on an advance replacement maintenance contract to be eligible for participating in the hot spares scheme. Obviously, it won't work if facilities have to keep the hot spares a month at a time while they get their equipment fixed.
As to the schedule of the ATM network implementation, JAC would like to see it in place by the middle of 1998, Subaru by next March, and Gemini by the end of this year. Our preliminary goal is to have the common equipment in place in a year. In the interim, Gemini can use two of our dark fibers to get to HP and the Internet.
In response to the concern that we will run out of fiber between HP and the summit communication room. Pui Hin responded that an ATM switch could be installed at HP and depending on the bandwidth demand at the time, an OC3 or OC12 link to the summit can be set up.
Andrew Pickles expressed concern about the over-heating of equipment in the Summit Communications Room. Ventilation and temperature control is part of the design effort.