Token ring local area network testing apparatus for matching its

Details Token ring local area network testing apparatus for matching its Token ring local area network testing apparatus for matching its

1993-01-11

1994-11-15

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 84, 371 206, H04J 314

Patent

active

053655133

ABSTRACT:
A token ring local area network (LAN) testing apparatus is provided. The apparatus includes hardware and software that enables it to determine whether the testing apparatus is able to send frames into the token ring at a correct ring speed. The apparatus includes a conventional network interface card (NIC). The NIC includes two selectable clock signals, with the frequencies of the two clock signals being different. When the NIC is used in transmitting frames into the token ring, one of the two clock signals is selected to accompany the frames. The testing apparatus monitors whether frames and/or tokens are obtained from the token ring using the selected clock signal. If not, the testing apparatus causes the other clock signal to be selected. A determination of proper ring speed is made before a beacon condition occurs that would disrupt normal operation of the token ring.

REFERENCES:
patent: 4667323 (1987-05-01), Engdahl et al.
patent: 4756007 (1988-07-01), Qureshi et al.
patent: 4837488 (1989-06-01), Donahue
patent: 5247546 (1993-09-01), Abbiate et al.

Affiliated with

Also associated with

Rating

Token ring local area network testing apparatus for matching its 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 for matching its, 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 for matching its will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1103516