Re: Difference Between T1 Frame relay
RE: Difference Between T1 Frame relayTo clarify, T1 (or better still, DS1) is a Physical Layer standard which regulated line encoding and bit timing. Frame Relay is a Data Link Layer framing convention (based on a modified HDLC) and has nothing to do with the Physical Layer bit timing and line encoding schemes covered by T1, E1 or the other Layer 1 standards. -- Edward Solomon CCNA, CCSI Senior I/T Specialist Networking Solutions IBM Canada Ltd. - Learning Services Tel.: (905) 316-3241 Fax: (905) 316-3101 E-mail: [EMAIL PROTECTED] Internet: http://www.can.ibm.com/services/learning/net_internet.html ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Difference Between T1 Frame relay
Can some one clearly explain the difference between T1 and Frame relay, Does T1 run over Frame relay circuits ? Aren't they both Layer 1 in the OSI model. I have searched the archives and found some good info but I am still a little fuzzy about the concepts. Thanks Guys. = JZ [EMAIL PROTECTED] __ Do You Yahoo!? Send instant messages get email alerts with Yahoo! Messenger. http://im.yahoo.com/ ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Difference Between T1 Frame relay
Frame Relay refers to the data network that your provider uses to get data from one endpoint to another. Inside their frame relay cloud, they usually run ATM, but that's another matter entirely. T-1 is a digital line that is used to access the frame relay network. so, you have this: Router -- CSU/DSU -(T-1)-(frame cloud)... There are other options for accessing the frame cloud, but T-1 or a fractional T-1 are the most common. You could also have a T-1 point-to-point circuit and choose not to use frame relay. In this case, you could use some other layer 2 encapsulation such as HDLC or PPP. Your choice all depends on your needs and your budget. Can some one clearly explain the difference between T1 and Frame relay, Does T1 run over Frame relay circuits ? Aren't they both Layer 1 in the OSI model. I have searched the archives and found some good info but I am still a little fuzzy about the concepts. Thanks Guys. = JZ [EMAIL PROTECTED] __ Do You Yahoo!? Send instant messages get email alerts with Yahoo! Messenger. http://im.yahoo.com/ ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Get 100% FREE Internet Access powered by Excite Visit http://freelane.excite.com/freeisp ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Difference Between T1 Frame relay
Think of T1 as a speed designator only. In practice, it usually means a point-to-point circuit or sometimes an ISDN PRI, but basically it just indicates an overall speed of 1.544Mbs. Frame relay is a technology that can be used over a T1 circuit (originally designed for a BRI, if you can believe it...). Frame relay divides the T1 pipe into 24 channels (some or all of which may actually be used). It's usually characterized by, among other things, virtual circuits. This divides the bandwidth of the T1 up into timeslices (DLCIs) which allow connections from one point to one or more remotes over the same physical interface. When speaking about the actual circuit (the wire), the T1 is layer 1. But in the meaning of point-to-point (PPP protocol), it is layer two. Whenever you're not clear what the other person means, have them spell it out for you so you're both on the same page. Frame relay is a layer 2 protocol. If you *really* want to delve into Frame, I *HIGHLY* recommend the following book: Frame Relay: Technology and Practice by Jeff T. Buckwalter List Price: $39.95 Hardcover - 368 pages 1 edition (December 7, 1999) Addison-Wesley Pub Co; ISBN: 0201485249 It's written in textbook format, and jumps right into the meat of Frame Relay. When I was shopping for a book on the subject, the only other contender I could find started me back at the OSI model and the 1970s when everybody had IBM SNA mainframes. I much preferred Buckwalter's approach. Hope this helps. Holler back if you need more. I looove Frame! =) - Don -Original Message- From: John Zaggat [mailto:[EMAIL PROTECTED]] Sent: Monday, May 22, 2000 9:51 AM To: CiscoGroupstudy Subject: Difference Between T1 Frame relay Can some one clearly explain the difference between T1 and Frame relay, Does T1 run over Frame relay circuits ? Aren't they both Layer 1 in the OSI model. I have searched the archives and found some good info but I am still a little fuzzy about the concepts. Thanks Guys. = JZ [EMAIL PROTECTED] __ Do You Yahoo!? Send instant messages get email alerts with Yahoo! Messenger. http://im.yahoo.com/ ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] * The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to our clients any opinions or advice contained in this email are subject to the terms and conditions expressed in the governing KPMG client engagement letter. * ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Difference Between T1 Frame relay
Title: RE: Difference Between T1 Frame relay T1 is a type of connection to an ISP, ex. 56k, ISDN, T1, T3 Frame-Relay is an encapsulation connected to a telco provided frame-relay cloud frame is run over T1 T1 is a permanant connection to an ISP frame can either be pvc (permanat virtual connection) or svc (switched virtual connection) a T1 can be used to handle Frame, ATM, or any other encapsulation (HDLC) the main difference is that a T1 line is a connection type Frame-Relay is an encapsulation hope this helps and as always, ppl please correct me if i have made any mistakes, Aaron -Original Message- From: John Zaggat To: CiscoGroupstudy Sent: 5/22/00 11:51 AM Subject: Difference Between T1 Frame relay Can some one clearly explain the difference between T1 and Frame relay, Does T1 run over Frame relay circuits ? Aren't they both Layer 1 in the OSI model. I have searched the archives and found some good info but I am still a little fuzzy about the concepts. Thanks Guys. = JZ [EMAIL PROTECTED] __ Do You Yahoo!? Send instant messages get email alerts with Yahoo! Messenger. http://im.yahoo.com/ ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Difference Between T1 Frame relay
T1 is layer 1 Frame Relay is Layer 2. It has datalink addressing (DLCIs). Frame relay runs over T1 (and other things like 56K DDS and DS-3). JOE CCNP, CCDP, and a few other things... CCIE Lab - May 27/28 "John Zaggat" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Can some one clearly explain the difference between T1 and Frame relay, Does T1 run over Frame relay circuits ? Aren't they both Layer 1 in the OSI model. I have searched the archives and found some good info but I am still a little fuzzy about the concepts. Thanks Guys. = JZ [EMAIL PROTECTED] __ Do You Yahoo!? Send instant messages get email alerts with Yahoo! Messenger. http://im.yahoo.com/ ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] --- ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
