On Fri, 13 Apr 2007, Leonardo Gama Souza wrote: > Hi there. > Does the memory fragmentation usually take place when the free memory is > under 50MB? > I have a clue of this fragmentation when there is a lot of difference > between free and largest memory. Isn't it?
It can take place in most instances, but the effect will probably be more pronounced when the amont of free memory in the router is low. There really isn't a hard-and-fast limit to when fragmentation will occur. If the IOS version you're running doesn't have any memory leaks and you have plenty of free memory, fragmentation should not be a big problem. If the router needs X MB for a given process/task and X MB is available, but not in one contiguous chunk, IOS will allocate the memory, but it will be fragmented to fill the appropriate 'holes'. If your router is running low enough on free/contiguous memory to the point where fragmentation is causing you performance problems, you would need to: 1) look for unnecessary services/processes running on your router and turn them off. You might need to reboot after saving the config to get any benefit from this. 2) look for memory leaks. Fixing this usually requires an IOS upgrade 3) optimize your routing architecture. Does the router need to carry a full BGP routing table? Is it in your OSPF backbone area when it really doesn't need to be? 4) last but not least you may simply need more RAM in the router to do what you want to do jms _______________________________________________ cisco-nsp mailing list [EMAIL PROTECTED] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
