At 12:58 8/04/02 -0400, Terry Lee, Publisher wrote: >Hello friends, > >Can any of you clue me in as to the most efficient way to use Class C >address blocks when assigning MAX6000 IP pools that will also take advantage >of the so-called "route summarization" feature? The docs call for setting up >address pools which are "network aligned" in order to facilitate route >summarization. I assume here that by mentioning route summarization you're using some kind of dynamic routing protocol between your MAX box and your border router, rather than just having static routes on your border router to the max box ip pools ? >Since a MAX has (in our particular case) 92 usable modems, would it not seem >best to break the class C's in half and subnet mask at 255.255.255.192 , >allowing 2 "network aligned" MAXen to occupy each Class C? The only downside >to this that I can see is a waste of 35 IPs per subnet. Well, I wouldn't waste 35 IP addresses just to allow "route summarization", thats putting the cart before the horse :) (IP addresses are more precious than a few extra CPU cycles to handle slightly more subdivided routes, although the simpler the routing the better, in general) I'm not sure where you get 92 from - a MAX6096 has 96 modems, but if you use E1's for connection you get 30 incomming calls per E1, which works out to 90 if you use 3 E1's. (Maybe its different for T1's, I don't know) But anyway, if you use *two* routes, one a 255.255.255.192 and the other an adjacent 255.255.255.224 you get 64 addresses + 32 beside each other, which is 96. Take one address off if either end of the range falls at 0 or 255 to avoid problems with the /24's broadcast and network addresses, and you still have 95 available, which is a wastage of only 3 addresses per group. You could shared two MAX boxes on one class C, by breaking it up into two 255.255.255.255.192's and two 255.255.255.255.224's, and still have room for for another 255.255.255.192 for a third MAX. (But the third box will have to have its second group of 32 addresses on another subnet. Depends on how many MAX'en you have and how many class C's are available, theres a few possible arrangements, but you shouldn't have to waste more than a few addresses... Regards, Simon ++ Ascend Users Mailing List ++ To unsubscribe: send unsubscribe to ascend-users-request at bungi.com Archives: http://www.nexial.com/mailinglists/