memory on CSS 11000

[mjsully]

I have three different CSS 11050 switches, all with 128MB ram. all three report right around 20MB free memory, yet one on the 3 is doing much less than the other two. Is this too low of memory to be playing with or is it normal for the CSS to report this usage? Can one even still get memory upgrades for the CSS switches?

[Gilles Dufour]

the CSS takes most of the memory to create Flow Control Block [FCB] which are then allocated to create flow connections.

From llama mode you can do a 'flow stat' to see how many free FCB you have left.

This is more important than the memory.

A device with no config and not attached to any interface would still consume most of its memory to create the FCB.

Gilles.