[j-nsp] About RE memory utilization

[Eric Van Tol]

> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-
> bounces at puck.nether.net] On Behalf Of lbarrios at NAVEGA.com
> Sent: Thursday, April 03, 2008 11:53 AM
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] About RE memory utilization
>
> Hi,  everybody
> i would like to know  if exists any command to detail  the use of the
> Routing engine memory utilization in a juniper m10i.
>...
>
> I need to know in wich process the memory is to be used.  could
> anyone
> please suggest me what should be the maximum value of this parameter
> for a
> good m10i  performance .
>
> thanks ..

Based only upon personal experience, we've had old M5s running at >95% RE memory usage that hummed along just fine.  Even with FEB heap utilization at around 90%, we didn't have problems.  Forwarding is done in hardware, so you won't have a problem in that regard if memory usage is too high.  However, FEB/SSB/cFEB memory can have an impact on route updates, among other things.  Too high a utilization on there can prevent route changes and other nastiness.

-evt