A number of user configurable options for the SNMP agent can be set and queried from the console using the snmp command (see na_snmp(1)).
Due to weak authentication in SNMP version 1, SetRequest commands that allow the remote setting of configuration variables have been disabled.
MIB-II
Under MIB-II, information is accessible for the system, interfaces, at, ip, icmp, tcp, udp and snmp MIB-II groups. The transmission and egp groups are not supported.
The coldStart, linkDown, linkUp and authenticationFailure traps are implemented. Traps are configured using the snmp command.
NETWORK APPLIANCE CUSTOM MIB
The Network Appliance Custom MIB provides a means to obtain detailed information about many aspects of filer operation via SNMP. The Custom MIB can be obtained from Network Appliance's FTP site at ftp://ftp.netapp.com/pub/netapp/mib/netapp.mib, or by requesting the MIB on a floppy disk from Network Appliance Technical Support.
The following is a summary of the top-level groups in the Custom MIB and the information they contain:
product
Product-level information such as the software version string
and system ID.
sysStat
System-level statistics such as CPU uptime, idle time and
aggregate kilobytes received and transmitted on all network
interfaces.
nfs
Statistics like those displayed by the nfsstat command (see
na_nfsstat(1)), including statistics for each client if perclient
NFS statistics have been enabled using the
nfs.per_client_stats.enable option (see na_options(1)). The
per-client NFS statistics are indexed by client IP addresses.
quota
Information related to disk quotas, including the output of
the quota report command (see na_quota(1)). To access quota
information, quotas must be turned on.
filesys
Information related to the file system, including the
equivalent of the maxfiles and df commands, and some of the
information from the snap list command (see na_df(1),
na_maxfiles(1), na_snap(1)).
raid
Information on RAID equivalent to the output of the sysconfig
-r command (see na_sysconfig(1)).
You can have an application on the network management station set an alarm when a filer has been taken over. The SNMP variable to check is the netapp.netapp1.sysStat.cf.cfSettings variable. If this variable is set to thisNodeDead, the filer has been taken over.