All MIBs come zipped with the firmware download. Here are the memory and cpu OIDs for the N-series.
126.96.36.199.4.1.674.10895.5000.2.6188.8.131.52.1.4.1 (total free memory)
184.108.40.206.4.1.674.10895.5000.2.6220.127.116.11.1.4.2 (total memory)
18.104.22.168.4.1.674.10895.5000.2.622.214.171.124.1.4.3 (Table for the following...)
126.96.36.199.4.1.674.10895.5000.2.6188.8.131.52.184.108.40.206.2 (Name of process using CPU)
220.127.116.11.4.1.674.10895.5000.2.618.104.22.168.22.214.171.124.2 (% of CPU used by corresponding process)
.126.96.36.199.4.1.674.10895.5000.2.6188.8.131.52.184.108.40.206 (rollup of all CPU activity)
220.127.116.11.4.1.674.10895.5000.2.618.104.22.168.1.4.9 (shows 5 sec, 60 sec., and 300 sec)
Oids can be easily searched using a good MIB browser, allowing you to load all of the MIBs at once, search for keywords (i.e. VLAN) to easily find the required OIDs and information you need. Browsers parse out each OID and descriptions for each, making them much easier to read than trying to use a text reader or word processor, and allow you to process all of the files at once.
Hope this helps
Hi Dear, Thanks for your reply and i have added cpu and memory OID and tried to pull out data. However it is still not working.I am using PRTG free monitoring tools