Priscilla,
The only reading I have done on the LLC2 standard is from a book written by
Roosevelt Giles. From reading the book I got the impression that LLC was a
subset of HDLC and it was based on HDLC standard not the other way around.
I would have to respectfully disagree with the statement that hdlc and lapd
are based on LLC2. But I wouldn't put my career on it. I would also mention
the reliability factor is because it is an acknowledged connection-oriented
service versus LLC type 1 is connectionless. Is this part of the Top down
network design volume 2 edition. If it is please let us know the due date
cuz its gonna sellout fast.
Hope this helps
George, Head Janitor, CCNA CCDA
Cisco Systems
""Priscilla Oppenheimer"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I found myself writing this paragraph for a new writing project:
>
> When NetBEUI and SNA are used on Ethernet networks, they take advantage of
> the reliability of LLC Type 2. Because NetBEUI and SNA are legacy
> protocols, the use of LLC Type 2 is diminishing. However, it is still
> important to learn LLC Type 2 because WAN protocols, such as High-Level
> Data Link Control (HDLC) and Link Access Procedure on the D Channel
(LAPD),
> also known as ITU-T Q.921, are based on LLC Type 2. (Cisco's HDLC is
> non-standard and is not based on LLC Type 2, however. Cisco's HDLC is
> connectionless.)
>
> Do I have it backwards? Are HDLC and LAPD based on LLC2, or is it the
other
> way around? Any other lies you can pinpoint in my paragraph? I know it's a
> bit awkward still. I will polish it. ;-) Thanks for your help!
>
> Priscilla
>
> Thanks for your help!
>
> Priscilla
>
> ________________________
>
> Priscilla Oppenheimer
> http://www.priscilla.com
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=8283&t=8262
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
