[j-nsp] Need suggestions..

[Kevin Wormington]

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.

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.

Kevin

TCIS List Acct wrote:
> We have 4 M7i's with RE-400's and 768M RAM and have never had a problem 
> with taking full routes (we are at 55% memory usage right now).
> 
> With all of the comments on this topic, should we be worried?
> 
> Our units push ~200Mbit traffic, so they are nowhere near capacity CPU 
> wise.
> 
>> I can confirm your worry about the RE-850.
>>
>> We had one box with a full Internet table (~310K prefixes) *and* a
>> reasonable number of L3VPNs with a total of ~160K prefixes, *and* a
>> high number of interfaces. This box needed enough RE memory that we
>> started seeing swap usage. Not good.
>>
>> Now the box has a reduced Internet table, and is happy.
>>
>> Steinar Haug, Nethelp consulting, sthaug at nethelp.no
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>