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SNMP LAB EXERCISES

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The goal of this exercise is to become familiar with
the net-snmp tools, as well as the operation of SNMP.

You will enable an snmpd agent on your workstation.
You will then use SNMP tools to query the agent.  These
tools include: snmpstatus, snmpget, and snmpwalk, and
snmptranslate.

You will see some of the common MIB categories.
And at the end, you will examine the MIB files to see 
where they are located, and what kind of information
they contain.
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1. Install net-snmp 

	% cd /usr/ports/net-mgmt/net-snmp
	% sudo
	# make
	# make install

* YOU MAY WANT TO TYPE REHASH NOW! *

	# rehash

2. Add to the startup file

	# vi /etc/rc.conf

	snmpd_enable="YES"
	snmpd_flags="-a"
	snmpd_conffile="/usr/local/share/snmp/snmpd.config"
	snmptrapd_enable="YES"
	snmptrapd_flags="-a -p /var/run/snmptrapd.pid"

3. Configure the local snmpd.conf

	# vi /usr/local/share/snmp/snmpd.config

	rocommunity afnog 196.200.208.0/20
	rocommunity afnog 127.0.0.1
	sysLocation where-is-this-machine-located
	sysContact your-name-and-e-mail-here
	sysDescr describe-system-here
	disk /
	disk /var
	load 12 10 5

4. Start the snmpd

	# /usr/local/etc/rc.d/snmpd start

5. Test to see if it your local SNMPD is responding

	You can leave root now if you want to…
	# exit

* YOU MAY WANT TO TYPE REHASH NOW *

	% rehash
	% snmpstatus  -v 2c -c afnog localhost

6. Walk through the "system" MIB section:

	% snmpwalk -v 2c -c afnog localhost system

7. What type of data is in these MIBs?

	% snmptranslate .1.3.6.1.2.1.2.2.1.2
	% snmptranslate .1.3.6.1.2.1.31.1.1.1.18
	% snmptranslate .1.3.6.1.2.1.25.2.3.1
	% snmptranslate .1.3.6.1.2.1.25.4.2.1

8. Walk through the "interfaces" iftable MIB section:

	% snmpwalk -v 2c -c afnog localhost iftable

9. Do the same thing but with "ifXtable":

	% snmpwalk -v 2c -c afnog localhost ifXtable

10. Walk through your neighbors "interfaces":
NOTE: Look for what is different here

	% snmpwalk -v 2c -c afnog pcXX interfaces

11. Where are your MIBs?

	% cd /usr/local/share/snmp/mibs	

12. What kinds of things are in the MIBS files for:

	% less HOST-RESOURCES-MIB.txt

	% less IF-MIB.txt	

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