[j-nsp] Need suggestions..

[sthaug at nethelp.no]

> We also have a few M7is with RE-400s and 768MB RAM and don't have any 
> problems with a thousand or so logical interfaces and 2 full bgp feeds 
> each (only 300+k routes in FIB, and full IPV6 tables).  The memory usage 
> is at 95% but they don't swap and I think I remember seeing somewhere 
> that the memory usage reported is always high in later JunOS releases 
> (these are at 9.6R1.3).
> 
> I think where you run into problems is if you are using some of the 
> advanced services - ie a bunch of MPLS L3VPNs, etc.  If you are just 
> routing IPV4/IPV6, dhcp relaying, BGP then I personally think they have 
> quite a bit of life left in them.

I wouldn't bet on RE-400 / 768 MB having a lot of life left *with full
Internet routing tables and recent JunOS versions*. If you remove one
or both of those qualifications, you should be fine for quite a while
yet.

> As far as I now, the CPU usage doesn't have anything to due with the 
> amount of traffic that is transiting the router since it's done by the 
> PFE hardware.

Correct.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no