>Mann, Chris wrote: >> >> I am studying for the CID test and am a little fuzzy about what >> the main >> differences between MP(Multilink PPP)and MMP(Multilink >> Multichassis PPP). >> Don't they both combine ISDN B channels across multiple access >> servers or >> routers?? > >No, only the second one combines channels across multiple access servers. >Multilink PPP (MP) simply works to bring up both ISBN B channels on a single >interface, for example. > >MP was the original enhancement to PPP that added support for basic channel >aggregation. MP ensures that packets arrive in order at the receiving device >through the use of sequence number. Multiple channels appear as one logical >link to upper-layer protocols. > >Multichassis MP is a Cisco IOS enhancement to MP that allows channel >aggregation across multiple remote-access servers at a central site. >Multichassis MP allows you to group multiple access servers into a single >stack group. User traffic can be split and reassembled across multiple >access servers in the stack group. > >Multichassis MP makes use of the Stack Group Bidding Protocol (SGBP). SGBP >defines a bidding process to allow access servers to elect a server to >handle aggregation for an application. The server has the job of creating >and managing a bundle of links for an application that requests channel >aggregation. > >So, anyway, it all boils down to that multichassis is multi in two ways: >multiple chassis and multilink PPP. Also, multichassis requires SGBP. It >really helps to look at a picture. Hopefully your study materials have a >picture. It also helps to know the history and to realize that Cisco always >has to add enhancements and bells & whistles to the basic concept. So MP >came first. Then Cisco made it even more complicated with multichassis MP. ;-) > >Priscilla
You haven't begun to get into complexity until you experience MLPPP over L2TP, the L2TP possibly running through IPsec. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=50216&t=50198 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
