[c-nsp] Appropriate NPE for two full tables and about 40 megabits per second

[Alex Rubenstein]

On Tue, 12 Jul 2005, Jeff Chan wrote:

> What would be an appropriate NPE for use in a 7200 to hold two
> full BGP tables (plus a few other sundry routes) and doing about
> 40 megabits per second of typical ISP type traffic?

NPE-300 will do it, but it'll be unhappy, and might not work depending on 
the IOS. NPE-400 should handle that OK, short of a DDOS. Load them up on 
RAM either way, 256 or 512. 256 will be tight.

On second thought, go NPE-400.

NPE-400, two views, about 25 mb/s:

                 Head    Total(b)     Used(b)     Free(b)   Lowest(b) 
Largest(b)
Processor   64336E40   432837056   183655476   249181580   247966924   243545276
       I/O    E000000    33554432     5766948    27787484    24158844    26065600

cust1.XXX>sho proc c s
CPU utilization for five seconds: 36%/26%; one minute: 41%; five minutes: 41%

  PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
   57   145144240 532127608        272  6.39%  5.06%  4.39%   0 IP Input
    6    14076948  14539775        968  0.47%  0.43%  0.35%   0 Pool Manager
  172     4979872 357477510         13  0.39%  0.34%  0.32%   0 PPP Events
   36    10077068  12247197        822  0.31%  0.24%  0.24%   0 Per-Second Jobs
  177    30535152  25568507       1194  0.31%  0.29%  0.29%   0 ISIS Upd
  160    17674532   2595636       6809  0.23%  0.16%  0.16%   0 Compute load avg
  109    93712908  25409898       3688  0.15%  1.00%  0.94%   0 CEF process
  192    51136532  75579323        676  0.15%  0.39%  0.41%   0 BGP Router

(I love how "computer load avg" is in the top 6 of CPU usage)



Here's another one, NPE-400, 45 mb/s, two views:

cust2.XXX>sho proc c s
CPU utilization for five seconds: 52%/41%; one minute: 56%; five minutes: 56%
  PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
  147   214112140 982943567        217  2.63%  2.36%  2.24%   0 IP Input
  170    33568480    422079      79532  2.39%  0.29%  0.19%   0 IP Background
  280   167018672 326553091        511  0.71%  1.82%  1.32%   0 IP SNMP
  282    81714940 168336019        485  0.47%  0.83%  0.59%   0 SNMP ENGINE
  251     5641340    275465      20479  0.39%  0.04%  0.00%   0 Per-minute Jobs
  294    53332776  80720840        660  0.39%  0.20%  0.19%   0 BGP Router






> On our 7513/RSP4 we have 256 Meg running IOS 12.3(13) mainline
> and the two tables and it shows:
>
>> sh proc mem
> Total: 215786176, Used: 167955156, Free: 47831020
>
> I assume the NPE does more in memory, so would 256 MB be enough?
>
> TIA for any comments,
>
> Jeff C.
>

-- 
Alex Rubenstein, AR97, K2AHR, alex at nac.net, latency, Al Reuben
Net Access Corporation, 800-NET-ME-36, http://www.nac.net