SNMPD(8)

NAME
       snmpd - cmu's snmp agent for Linux

SYNOPSIS
       snmpd  [-V]  [-p  <port>] [-v] [-d] [-A] [-f] [-c <config-
       file>] [-a <agentboots>]

DESCRIPTION
       Snmpd should be run as a daemon in background. It is serv-
       ing  to  your  pleasure  and  answering snmp V1 and V2usec
       requests.
       Upon startup /etc/snmpd.conf is read (if it exists).
       Successful set-requests of system.sysName, system.sysLoca-
       tion  and  system.sysContact are stored in snmpd.conf(5) ,
       if this files exists.
       With the default configuration the daemon answers  all  V1
       requests  with the ``public'' community string, except for
       host.hrSWRun* requests, for security reasons and the  con-
       figured V2usec requests.

OPTIONS
       -V     Print version to stdout and exit.

       -v     Be verbose upon startup.

       -d     Dump  snmp-packets  to stdout. Useful for debugging
              only.

       -A     This option is only effective  on  a  linux  system
              with  a specific ip-accounting rules set. With this
              option set, the agent tries to read the  interface-
              byte counter from /proc/net/ip_acct. A useable rule
              for eg. eth0 would be:
              ipfwadm -A in -a -P all -S 0.0.0.0/0 -D 0.0.0.0/0 -W eth0
              ipfwadm -A out -a -P all -S 0.0.0.0/0 -D 0.0.0.0/0 -W eth0
              A sample init.d/snmp startup script is included in the source.
              Note: If an matching entry is found in the accounting table, it replaces
              the output from /proc/net/dev for this device (if listed there).
              Note: IP-accounting works on ip-packet level, /proc/net/dev statistics
              on device level, so these number may differ (and will when flushing
              the accounting table).

       -f     Fork away and run in background. This option launches a snmpd demon
              running in the background and lets the command return immedeately.
              You would normally use this at bootime, eg. in /etc/rc.local as
                     /usr/sbin/snmpd -f  ;  echo 'snmpd'

       -c <<configfile>>
              complete filename of the snmpd configuration  file.
              The default is /etc/snmpd.conf .

       -a <<agentinfo>>
              complete filename of the snmpd's agentinfo file. It
              contains the numer of agentboots.  The  default  is
              /etc/snmpd.agentinfo  .   This  file  needs  to  be
              writeable by the agent.

ENVORONMENT
       MIBFILE - complete filename of mib.txt (this  defaults  to
       /usr/lib/mib.txt and a /etc/mib.txt is also found).

FILES
       /etc/snmpd.conf - configuration file of the agent
       /etc/snmpd.agentinfo - storage file for agent reboot info
       /usr/lib/mib.txt - MIB database

SEE ALSO
       snmpd.conf(5) variables(5) 

BUGS
       ifInOctets  and  ifOutOctets  are calculated for pre linux
       ~v2.0.32 and ~v2.1.42 kernels by packet count * 308  bytes
       (please see -A option above too).
       In  linux  ~v2.1.68  the  kernel support for statistics of
       aliased interfaces was removed :-(
       Setting routing entries does not work (the  cmu-code  hits
       you hard).
       Since linux ~2.1.68 aliased interfaces in routing destina-
       tions show up only as  the  base  device  (/proc/net/route
       bug); eg. eth0 instead of eth0:1.
       If  you run a redhat based installation, you may encounter
       problems due to that fact.

AUTHOR
       Changes  and  add-on's  for  the  Linux  port,  the   host
       resources  enhancement  and ident enhancement are added by
       Erik Schoenfelder schoenfr@gaertner.de, the  Linux  MIB,
       many  ideas, suggestions and help by Juergen Schoenwaelder
       schoenw@ibr.cs.tu-bs.de.  Many helpful patches and  code
       from poeple on the net is incorporated. Thank's folks.