Re: OID Compression - implementation experience
Juergen Schoenwaelder <[email protected]>
| Newsgroups | gmane.ietf.eos |
|---|---|
| Message-ID | <[email protected]> |
>>>>> Dave Shield writes: Dave> I've recently (finally) got around to an experimental Dave> implementation of the two "standalone" OID compression Dave> techniques proposed last year. Great. Dave> The other difficult encountered was relating to uncompressed Dave> OIDs, which might still be used for calculating the following Dave> delta. With OPC, such variables were identifiable by their type Dave> tag, and this could be used as a signal to save the OID. With Dave> ODC, there was no way to tell which OIDs would be needed for Dave> delta calculations, so *all* OIDs had to be saved - possibly Dave> unnecessarily. Some form of look-ahead could be used to avoid Dave> this, but the OPC explicit type tag proved a more useful Dave> approach. Not sure I fully understand you here. The delta computation is always relative to the last OID (if I remember correctly) and thus it should be sufficient to just save the last OID. Can you elaborate on this? /js -- Juergen Schoenwaelder <http://www.informatik.uni-osnabrueck.de/schoenw/>