Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!ucbvax!amdcad!rpw3 From: rpw3@amdcad.AMD.COM (Rob Warnock) Newsgroups: comp.dcom.lans Subject: Re: status lights on lan equipment Message-ID: <22205@amdcad.AMD.COM> Date: 24 Jun 88 11:19:52 GMT References: <5808@dcatla.UUCP> <9750@g.ms.uky.edu> Reply-To: rpw3@amdcad.UUCP (Rob Warnock) Organization: [Consultant] San Mateo, CA Lines: 27 +--------------- | One which occasionally is very bothersome here ... | On these terminal server boxes (in our case, UB NIU-180's), have | a light per port saying if it's busy. Maybe two lights -- one that | it's in use and another saying that i/o is active. | <---- David Herron -+--------------- Long time ago at Dig. Comm. Assoc. (DCA), on our statistical multiplexers we supplied a single LED per port, encoded this way: 1. Idle port, LED is off. 2. LED flashes on in time with "RING". 3. LED comes on solid with carrier (CD) [or DSR, some configs], but... 4. ...flashes *off* for received/transmitted data. It took a new customer or tech all of 30 seconds to learn to correctly interpret what was going on with any given port. (The "ring" flashes were *never* confused with "data".) Rob Warnock Systems Architecture Consultant UUCP: {amdcad,fortune,sun,attmail}!redwood!rpw3 ATTmail: !rpw3 DDD: (415)572-2607 USPS: 627 26th Ave, San Mateo, CA 94403