CIS 3210 Lecture Notes - Lecture 33: Management Information Base, Simple Network Management Protocol, Shared Medium

• School: University of Guelph
• Department: Computing and Information Science
• Course: CIS 3210
• Professor: Xiaodong Lin

Document Summary

Managed devices (agents) contain managed objects whose data is gathered into a. Purpose is for manager to check that the agents are working properly. Response from managed device is a mib. Recall: a route that path a packet takes from source to destination. Links: communication channels that connect adjacent nodes along communication path. Data-link layer has responsibility of transferring datagram from one node to physically adjacent node over a link. Datagram transferred by di erent link protocols over di erent links: E. g ethernet on rst link, frame relay on intermediate links, 802. 11 on last link. E. g may or may not provide rdt over link. *** only deals with communication to adjacent machine *** The link layer protocols only deal with delivering the frame to the next hop in the route. Encapsulation datagram into frame, adding header, trailer. Mac addresses used in frame headers to identify source, destination. We learned how to do this in chapter 3.