Yes, all 4 OC-3c circuits do terminate at the MFS Gigaswitch-01. It is a single point of failure, but the ckts must all be on the same switch in order to use the load-sharing feature. -Lance- On Fri, 11 Jul 1997, Rodney Joffe wrote:
Another Update from our guys...
Power problems in the MFS facility caused the initial outage. Power has been restored, but the Gigaswitch has lost it's configuration causing all peers to remain down.
Based on some of the mail to this list, it is GIGA 1 at MAE West, 2 and 3 are up. (Most of those complaining are on GIGA 1, Mathew at ACSI is on GIGA 2 and thinks he's up. I can't reach him directly from NASA/Ames, so my guess is that he is up, but can only see peers at GIGA 2 and 3 - see next para...)
By the way, to expand the thread, I have the feeling that the three OC-3s from NASA Ames side to MFS all go to GIGA 1, which then has fddi loops to GIGA 2 and then to GIGA 3.
Does anyone know if this is the case?
If it is, seems that a better design would have been to route some of the OC-3s to the other GIGAs first. If 1 is down, then it can't pass traffic through to 2 and 3, so there is a single point of failure for all the switches at MFS.
Rodney Joffe Chief Technology Officer Genuity Inc., a Bechtel company http://www.genuity.net