>Found this in RFC 1661 which documents PPP: > >The maximum length for the Information field, including Padding, but not >including the Protocol field, is termed the Maximum Receive Unit (MRU), >which defaults to 1500 octets. By negotiation, consenting PPP >implementations may use other values for the MRU. > >P.
Hmmm...I definitely am aware of providers using 4470 on POS links, and a general trend in the gigabit-plus world to use larger MTUs. Is this simply industry practice, I wonder, or are there some overriding IEEE or IETF documents? Perhaps in the sub-IP area, such as IP over Optical? > >At 03:05 PM 11/29/01, Howard C. Berkowitz wrote: >> >Howard, >> > >> >Correct me if am wrong but, the HDLC advantage over PPP is the MTU size. >> >PPP supports 1500 while HDLC 4xxx (can't remember the exact number), >> >this might be helpful in situations where DF bit is set. >> > >> >Nabil >> >>I'd have to research this -- I don't offhand remember PPP (as the >>protocol) having a MTU limit that small. It would surprise me, given >>the interest in POS. >________________________ > >Priscilla Oppenheimer >http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=27741&t=27637 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
