[mrtg] Re: link utilisation for compressed links

[Lightfoot.Michael]

> -----Original Message-----
> From: Mustafa Kapadia [mailto:Mustafa_Kapadia at mumbai.tcs.co.in] 
> Sent: Thursday, 14 November 2002 1:43 AM
> To: mrtg at list.ee.ethz.ch
> Subject: [mrtg] link utilisation for compressed links
> 
> 
> Greetings,
> 
>     how mrtg takes care of link utilisation for compressed 
> links??  Does mrtg require some compression information in 
> form of an oid in cfg file.
> 
Because compressed links have no quantifiable maximum MRTG cannot really
provide realistic % utilisation.

The best way to deal with it is to set MaxBytes to the uncompressed link
size and AbsMax to some arbitrary figure that you never expect to
exceed.  Your graph will then show how your compression is performing
(link utilisation will be >100%) as well as show the raw thruput.  For a
64K compressed link the MaxBytes would be 8000 and AbsMax something like
16000 (note these are Bytes/sec).

Dealing with Frame Relays is  similar, except you know the theoretical
limit and set AbsMax to that.  For example for a 1544Kb/s FR with a PVC
CIR at 256Kb/s you set MaxBytes to 32000 and AbsMax to 193000 (note
again that these are Bytes/sec.)
------------------------------------------------------------------------
NOTICE: This e-mail message and attachments may contain confidential 
information. If you are not the intended recipient you should not use or 
disclose any information in the message or attachments. If received in 
error, please notify the sender by return email immediately.  Comcare 
does not waive any confidentiality or privilege.

Comcare's Canberra and Melbourne offices have moved to new premises. 

We hope this notice makes it easier for you to update your records. 
 
New street addresses:
 
Canberra office                        
Level 1                                                           
14 Moore street                                               
CANBERRA CITY  ACT  2601

Melbourne Office
Level 2
121 William Street
MELBOURNE VIC 3001
Claims Fax Number 03 9620 4721

Please call Comcare on 1300 366 979 if you have any queries.

--
Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
Archive     http://www.ee.ethz.ch/~slist/mrtg
FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi