""Howard C. Berkowitz"" wrote in message news:[EMAIL PROTECTED] > At 3:35 PM +0000 8/2/03, Charles Cthulhu Riley wrote: > >Less IP addresses used? > > Typically, the advantage of P2P is that you can impose individual > policies on each spoke. A basic such example would be bandwidth > matching the CIR if all CIR's are not the same. Spoke-specific > access lists would be another. Routing configuration generally is > easier. > > You also get finer granularity for SNMP, accounting, etc. > > P2M might slightly conserve IP addresses, but, more significantly, it > conserves Interface Descriptor Blocks (IDB) and interface buffers in > the IOS. In some respects, it's more intuitive, although the routing > configuration is more complex.
This was probably an important issue several IOS versions ago. These days, with limits in the thousands ( maybe up to 10,000? ) descriptor blocks available, even on the lowly 2501, this is no longer an issue. As I once said in another lifetime, changes in hardware and software have led to less concern with traditional design issues that were centered around scarce resources. If I can trust the Cisco writings on the topic, trhe more modern QoS mechanisms have even led to more effective use of WAN bandwidth, which has continued to be the real bottleneck in networking. Tools such as RED, WRED, and tail drop have helped alleviate the problems associated with the phenomenon of global synchronization. I suspect the work of the IETF and queueing theory researchers over the past decade of so have led to a more effective use of bandwidth, meaning that more data can use the same link. If I understand correctly. > > > wrote in message > >news:[EMAIL PROTECTED] > >> Guys, > >> > >> Very quick one here. > >> > >> If I have a hub site with 5 spoke sites on an FR network, I could use FR > >> P2P sub ints or P2M sub ints. > >> > >> Why would I prefer a P2P over P2M method? The routing protocol would be > >> EIGRP and apart from broadcast traffic being 5 times more than a P2P > >> network, why would it be better for a P2P. I mean the split horizon can > >be > > > turned off on the hub multipoint interface. > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73429&t=73429 -------------------------------------------------- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
