🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: comp.dcom.sys.cisco
Article #236

Problems hooking Cisco to T1 line

#236
From: Tim Drake - E41
Date: Wed, 19 Aug 1992 14:46
59 lines
2071 bytes
Keywords: 

	Hi we are tring to bring up a T1 line from Va. to Fla.
The line was tested by GTE and we ran tests with a firebird and
the error rate was well below 1%. We are using a ATT acculink
multiplxer.

   Ok, the problem appears to be in the flow control handshanking.
We are using HDLC protocol and want the link speed to be 1.424Mbits/s.
The options for DCE data set controls are :


	1) RTS/DCD
	2) BO/RI
	3) DRS/DSR
	4) DTR/CTS
	5) Local RTS/CTS
	6) In-band Speed
	7) RTS Delay


   Most of the above have options for , active, inactive, in-band
and background.  The odd part with the following setup we are gettng
an 85% success (pings answered) at a slower speed (392,000 bitys/sec)
but less that 5% at the 1,424,000 bits/sec.  .



   RTS/DCD            In-band         :  400 bits/sec
   Local RTS/CTS      Active
   DRS/DSR            Active
   DTR/CTS            Inactive
   BO/RI              Inactive





    In-band - means end-to-end
    Background - means out of band transmission
    Active - means always high
    Inactive - low I think and Ignors the remote signal.



   We have tried changing the options around but they have had little effect.
WE are not sure what the Cisco wants to see. We have leaned that unless all
but one of the lights on the RS449 applica are lit the Cisco declairs the 
interface down. 

   Our Cisco are running 8.2(4) and 8.2(3). We have an RS449 (Cisco end) to
25 ping connector (DB25 I think) made up to GTE's spec. If anyone has any
insight as to what might be going wrong or set up incorrectly I would
greatly appreciate it.


    Thanks  Tim Drake    tdrake@relay.nswc.navy.mil

   
Technical Details
Message-ID: <1992Aug19.144617.19685@relay.nswc.navy.mil>
Path: arc1-ca.pugleaf.net!sparky!uunet!ukma!wupost!darwin.sura.net!dtix!relay!relay.nswc.navy.mil!tdrake

Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!ukma!wupost!darwin.sura.net!dtix!relay!relay.nswc.navy.mil!tdrake
From: tdrake@relay.nswc.navy.mil (Tim Drake - E41)
Newsgroups: comp.dcom.sys.cisco
Subject: Problems hooking Cisco to T1 line
Message-ID: <1992Aug19.144617.19685@relay.nswc.navy.mil>
Date: 19 Aug 92 14:46:17 GMT
Sender: news@relay.nswc.navy.mil
Organization: NSWC
Lines: 59