Token ring local area network testing apparatus providing statio

Details Token ring local area network testing apparatus providing statio Token ring local area network testing apparatus providing statio

1993-01-11

1995-08-22

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 855, 371 206, H04L 12433

Patent

active

054446953

ABSTRACT:
A token ring local area network (LAN) testing apparatus is provided. The apparatus monitors history or status of token ring stations. Such information is useful in isolating token ring faults that may occur during its operation. The apparatus includes current and past memory lists that contain status information for each token ring station. The current station memory list contains addresses of all token ring stations that are present during a current neighbor notification process. The last station memory list contains addresses of all token ring stations that were present in the token ring during the neighbor notification process that was previous to the current neighbor notification process. A neighbor notification process is a conventional part of the token ring media access control (MAC) protocol. Included with the addresses in these lists is a determined one of a number of state characters that is indicative of station status. The state character for each token ring station is determined using predetermined algorithms that are based on the presence/absence of stations in the token ring.

REFERENCES:
patent: 4506360 (1985-03-01), Kryskow, Jr. et al.
patent: 4649535 (1987-03-01), Ulug
patent: 4667323 (1987-05-01), Engdahl et al.
patent: 4747100 (1988-05-01), Roach et al.
patent: 5042027 (1991-08-01), Takase et al.
patent: 5062045 (1991-10-01), Janis et al.
patent: 5231593 (1993-07-01), Notess

Affiliated with

Also associated with

Rating

Token ring local area network testing apparatus providing statio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Token ring local area network testing apparatus providing statio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Token ring local area network testing apparatus providing statio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2147186