""Priscilla Oppenheimer"" wrote in message news:[EMAIL PROTECTED] > Curious wrote: > > > > > > Hello again friends, I want to thank Mr Jvd for his help, and I > > would like to post again my question, It is very surprising > > that we all have been working with routers for years but there > > is no answer for this question, I can evaluate the ammount of > > memory used in my router for every type of route, but I would > > like to learn from someone more skilled than me and test my > > results :) :) > > The reason you're not getting an answer isn't because we're blowing you off. > It's because it's too complicated for an easy answer. > > You'd have to talk to the IOS developers for a good answer. I have a > training manual that was used to teach new IOS developers. I checked it. > Although it talks a lot about memory management, it doesn't mention how much > memory each route takes. > > For one thing, it would certainly depend on the routing protocol. EIGRP's > scaled, composite metric takes more bytes than RIP's hop count, for example, > although from what I learned about memory management from the developer > training, memory is managed in chunks, so a few bytes probably wouldn't > matter. > > Most of the routing protocols save more info than just the routing table. > OSPF and EIGRP have a topology database, for example. So that would > definitley affect memory usage. > > Also, unless you plan to save all of the Internet BGP routing table, it's > simply not an issue. Routers have enough memory to store routing tables in > most cases... So, it's not a very relevant operational questions?? If it's a > research project, well get researching. Asking us won't help, I'm afraid. :-)
or to put it another way, why bother when memory and CPU is relatively cheap ( you DO use 3rd party memory, don't you ;-> ) As I tell all my customers, it doesn't hurt to max out the memory. Never can tell when you will need it. ( and it helps me retire quota ) As I say when I want to yank Priscilla's chain, design is dead. This kind of work is irrelevant. Reminds me of a question I saw on a practice test somewhere - which router would you use if money were no object? Believe it or not, the "correct" answer was not the most expensive one. :-> > > Priscilla > > > > > > Hello folks, > > > > I have to evaluate the impact of adding almost 1000 routes in > > my network, and what I want to know is simple: How many memory > > do I need for every new router? Do you know a simle rule? What > > I want to know is the relationship between the number of routes > > and the memory consumption. I can evaluate know this by looking > > how many routes are in may routing table and the memory used, > > but I would appreciate any experience from you. > > Thanks group! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=70372&t=70299 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
