perfsonar development work

[Loukik Kudarimoti <>]

Hi,

There are 2 main types of requests that SNMP MP can 
answer..MetadataKeyRequest and SetupDataRequest

MetadataKeyRequest is for discovering the capabilities of the MP by 
talking to the MP directly. For example, you can discover which routers 
are available, which OIDs are available, etc. We call such information 
as metdata.
This request also returns 'keys'. You can use these 'Keys' to retrieve 
measurement data from the SNMP MP. You can also make requests for data 
without using keys (see section below). Keys are meant to be opaque. We 
plan to encrypt them in the future. Using keys in request for data 
improves server efficiency.


SetupdataRequest is the second type of request. In fact it has two 
sub-types:
sub-type 1: this can do data retrieval when no keys are provided inside 
the request message
sub-type 2: this can do data retrieval when keys are provided inside the 
request message.

There aren't big differences between these two sub-types - just the 
presence or absence of the key.

Note: SNMP MP is currently capable of providing data for one request at 
a time. Bulk requests are planned for the future.

The diagram below is a UML sequence diagram for metadatakey request. 
Look for other emails where you can find similar UML for other types of 
requests.

Feel free to ask me any questions that you might have.

Regards,
Loukik

--- Begin Message ---

• From: Loukik Kudarimoti <>
• To: Rafael Costa <>
• Subject: snmp mp metadataKeyRequest sequence diagram
• Date: Tue, 25 Jul 2006 19:12:41 +0100

hi rafael,

Until you have the document, I thought this figure might be helpful..i am putting the document together..

Loukik.

--- End Message ---