This is not possible as you state it; Target line calculations can only be done on an OID pair. However you might achieve it like this:
Target[targetname]: oid1&oid3:co...@host - ( oid2&oid4:c...@host * 5 + ( pseudoZero&oid4:co...@host * 5 ) ) Note that the spaces around the brackets and arithmetic signs are essential. 'pseudoZero' is a magic MRTG virtualOID that always resolves to zero. Check the documentation on complex calculated Target lines online at www.mrtg.org<http://www.mrtg.org/> or get a copy of the book from www.steveshipway.org/book<http://www.steveshipway.org/book> Your example below is using oid4x10 in one place but oid4x8 in another but I guess that's just a typo. Steve ________________________________ From: nisha (via Nabble) [mailto:[email protected]] Sent: Thursday, 27 August 2009 11:02 p.m. To: Steve Shipway Subject: [mrtg-developers] Mathematical operations on OIDs Hi all, I want to perform mathematical operations on OIDs in the target line. For example, there are 4 oids as shown below: traffic packet In oid1 oid2 Out oid3 oid4 Now i want to apply the following formula traffic in = oid1 - (oid2 * 5) traffic out = oid3 - (oid4 * 10) My target line in router cfg file is like this: Target[targetname]: oid1&oid3:c...@hostname - (oid2 * 5)&(oid4 * 8):c...@hostname Is this possible in MRTG? Can the router cfg file handle oids with mathematical operations? -- View this message in context: http://n2.nabble.com/Mathematical-operations-on-OIDs-tp3524231p3531210.html Sent from the MRTG Developers Mailinglist mailing list archive at Nabble.com. _______________________________________________ mrtg-developers mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/mrtg-developers
