RE: [NV-L] Netview Recommendation Required!

["Evans, Bill" <Bill.Evans@hq.doe.gov>]

The three variables which are most important to sizing NetView are the number of operators, the number of interfaces and the number of traps per second/minute.  The referenced Installation Guide GC32-1842-00 discusses this in detail in appendix A.  The book is available online.  The calculation of the number of interfaces is more important than the number of nodes.  X-Windows consoles consume more resources than Web Consoles.   

 

A Very Large Network is characterized by:

• more than 50000 interfaces
• 10 to 20 web consoles and 3-4 X-windows operators
• 1-5 traps per second with short bursts up to ten per second. 

There are also considerations of SNMP data collection to add into the calculation along with external connections to TEC or other systems. 

 

The recommendation for a Very Large Network on Linux is to use a FOUR PROCESSOR  system with THREE GHZ processors and a FOUR to SIX GB memory.  

 

MLMs, one for every 3000 interfaces, would be a possibility and could move your main NetView back to the MEDIUM category (10000-25000 interfaces) where they recommend "two to four processors".  That would assume that most of the traps could be filtered out and the forwarded ones would be in the ten per MINUTE range and polling would be offloaded to the MLMs.  If your network is really "nation wide", MLMs should be placed at remote sites where practical.  They should be "local" to concentrations of monitored devices. 

 

Alternatives for reducing the need are to slow down your network polling to less than five minute cycles and turning off the non-critical traps at the source.  For example, Authentication traps should probably be logged and not handled by traps to NetView unless there is a really critical security requirement.  If you can't control traps at the source you can also configure NetView to discard them at the first level daemon instead of investing resources in logging and processing them. 

 

Good luck.  Count those interfaces and verify the number of traps expected then figure your system size. 

 

Bill Evans.

---

From: nv-l-bounces@lists.ca.ibm.com [mailto:nv-l-bounces@lists.ca.ibm.com] On Behalf Of Usman Taokeer
Sent: Friday, July 20, 2007 7:39 AM
To: Tivoli NetView Discussions
Subject: Re: [NV-L] Netview Recommendation Required!

Thanks for your input Ahsan

 

So the combination would be a Linux box with NV 7.1.5? Would a dual 3.0Ghz proc machine with 2GB memory be good enough to handle this?

 

Regards,

Usman

 

On 7/20/07, Ahsan Ali <ahsanali@gmail.com> wrote:

Take a look at Appendix A in the Linux / Unix Netview Installation guide.

A trap rate of 5/sec falls in the category of Very Large Network. With
an MLM doing some trap supression/throttling your network might be
manageable with the sizing for a Medium sized network.

>From Appendix A:
===============================================
A two or four-processor system with 2 GB of memory, one or two disk
drives, 100 MB Ethernet connection, and an appropriate video card.

Example systems:

   * For AIX(R) environments: IBM(R) pSeries(R) 7028 or pSeries 550
with four processors at 1.45 - 1.6 GHz.
   * For Windows(R) and Linux(R) environments: IBM xSeries(R) 365
with four processors at 3.0 GHz or xSeries 366 with four processors at
3.6 GHz.
===============================================

As for Linux/Unix vs Windows, it is my opinion that Linux and Unix are
the only way to go if you want to have any sort of life outside of the
Network Operations Center.

For the experts on this list, FP01 for 7.1.5 is out so are the early
teething problems sorted out?

-Ahsan

On 7/19/07, Usman Taokeer < usman.taokeer@gmail.com> wrote:
> Hi List,
>
> We have a 2000 node network, spanning nation-wide, media is a mix of ISDN
> BRI, Lease Cuircits & VSAT. Approx events/traps per sec would not be more
> than 5 per second. Which platform for Netview would you recommend i.e Unix
> or Windows and which version 7.1.4 or 7.1.5.
>
> Is there a need of using MLM's in this scenario or can NetView server handle
> these traps.
>
>
> Regards,
> Usman
>
>
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