Hi Priscilla, I have actually had this scenario (multiple times), but due to the Telco's misconfiguration. Specifically we were expecting b8zs/esf. Unfortunately I can't confirm which was configured incorrectly, but I can confirm that going through all of the different combinations available at the router you will get all combinations on the serial interface (up/up, down/up and down/down).
I can also confirm, you will not establish connectivity, regardless. I believe either b8zs/esf or sf/ami are the only valid combinations. At least that is all I've ever worked with. Hope this helps, -TV ""Priscilla Oppenheimer"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Hi Group Study, > > While writing some questions for a practice test, I found myself > questioning what I thought was the right answer. Here's the scenario: > > A Cisco router serial interface is correctly connected with a good V.35 > cable to the data port on the DSU side of a CSU/DSU. The CSU/DSU has been > misconfigured for the framing method (SF instead of ESF). The framing > doesn't match what the provider is using. (The question refers to a CSU/DSU > that is external to the router, not one that is built into the router.) > > Will the Cisco router serial interface be down/down or up/down? > > And, would the answer be any different if the question has to do with > misconfiguring the encoding (AMI versus B8ZS)? > > If you have real-world experience with this, that would help. I have read > the Cisco documentation and the troubleshooting charts, etc. > > Thanks > > Priscilla > > ________________________ > > Priscilla Oppenheimer > http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=47107&t=47101 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
