[c-nsp] Adequate RAM in 7206VXR/NPE-G1?

[Bruce Pinsky]

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Rick Kunkel wrote:
> Hello all,
> 
> We've got a 7206VXR/NPE-G1.  In it, we have the following modules:
> 
> PA-T3
> PA-A3-T3
> 
> The PA-T3 is totally unused.  Nothing plugged in.
> 
> The PA-A3-T3 has an ATM DS-3 from Verizon to aggregate our DSL customers.
> 
> On the NPE-G1, one GigE port is taken by an 802.1q trunk to a bunch of
> colo customers.
> 
> Another GigE port is taken by a 100 Mbps Ethernet connection ot the
> Internet.
> 
> We get full routes from the upstream connected to the above port.
> 
> My question is about RAM.  If I'm reading the show ver correctly, we've 
> got 256M of RAM.  I was recently told that this is like the BARE minimum 
> for a full routing table.  And considering other factors of its use, 
> probably rather lacking.
> 
> Can anyone verify or refute this?
> 

A quick of a GSR that has 216K routes shows that the BGP router process is
holding 156MB of memory.

175   0  372897988  120493880  156407792          0          0 BGP Router
				^^^^^^^^^
V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
4    81  685748   19218  1958075    0    0 1w0d       216712
							^^^^^^

IOS (tm) GS Software (C12KPRP-K4P-M), Version 12.0(30)S2
...snip...snip...
> 
> Here's a show mem sum:
> -----------
>                 Head    Total(b)     Used(b)     Free(b)   Lowest(b)  
> Largest(b)
> Processor   62502CA0   212849504   208938920     3910584     3294120     
> 1029992
>       I/O    F000000    16777216     4744900    12032316    11853080    
> 11608220
> -----------
> 
> 
> The 3MB free looks a little suspicious, but on the other hand, it hasn't 
> hit zero before.
> 

3MB is probably correct and to me is not much headroom.  I'd prefer to see
at least 10% of total memory free.

Do a "sh proc mem" to see if the numbers add up.

- --
=========
bep

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