Medium Access Control (MAC) and Physical Layer (PHY) - CISE

4-June-07 P1901_PRO_016_r0
All managed objects in the SNMP environment are arranged in a hierarchical or tree structure. The leaf objects of
the tree are the actual managed objects, each of which represents some resource, activity or related information that
is to be managed.
SNMP and thus MIB support are optional in this specification.
12.1.2 MIB-II for IEEE P1901
The structure MIB-II is located under the node mgmt. This node contains the definition of the management
information base approved by the IAB. MIB-II is an extension of the previously defined MIB-I. Under the node
‘mib-2’, IEEE P1901 nodes must support the following structures in RFC 1213:
• system(1): General information about the system:
o Description of the entity – hardware, operating system, etc.
o Level of OSI reference model to which the managed object pertains.
o Time since the last initialization of the system.
• interfaces(2): Information about the network interfaces of the managed entity, including information and
statistics about the events in each. There is an “interfaces” table in which each row corresponds to a
network interface. The information for a given interface:
o Physical address
o Type of interface
o Speed
o Status
o Number of transmitted and received octets
The implementation of the following nodes is optional.
• at(3): Translation of addresses IP – MAC.
• ip(4): Information about the configuration of the IP protocol over the device. Among others, the nodes
under the ‘ip’ node contain information about:
o Number of packets discarded because of errors in the IP header, because of errors in the addresses,
because of not finding a correct route, etc.
o Number of accepted packets.
o IP address of the interfaces and network mask of the network.
• icmp(5): Information about the Internet Control Message Protocol (ICMP).
Submission page 345 UPA-OPERA