Discussion

Discussion
The SNMP standard Host Resources MIB, specified in RFC 2790, contains objects
that allow you to retrieve the versions of the software running on the router. The
absolute path to the OID for installed software is .1.3.6.1.2.1.25.6.3. From the CLI,
you get this same information with the show version command (see Recipe 1.25):
aviva@router1> show version
Hostname: router1
Model: m20
JUNOS Base OS boot [7.4-20051024.0]
JUNOS Base OS Software Suite [7.4-20051024.0]
JUNOS Kernel Software Suite [7.4R1.7]
JUNOS Packet Forwarding Engine Support (M20/M40) [7.4R1.7]
JUNOS Routing Software Suite [7.4R1.7]
JUNOS Online Documentation [7.4R1.7]
JUNOS Crypto Software Suite [7.4R1.7]
In the SNMP output, the software version is shown as 7.42R1.7.0, which includes
the instance (.0) of the software package.
See Also
Recipe 1.25
4.8 Extracting Hardware Inventory Information
with SNMP
Problem
You want to use SNMP to find out router hardware information and which fieldreplaceable
units (FRUs) are present in the router.
Solution
If you are logged in to the router, you can get information using the show snmp mib
commands. To get information about a single router component:
aviva@router1> show snmp mib get sysObjectID.0
sysObjectID.0 = jnxProductNameJ230M20
To get information about the next router component in the MIB:
aviva@router1> show snmp mib get jnxBoxClass.0
jnxBoxClass.0 = jnxProductLineM20.0
aviva@router1> show snmp mib get-next jnxBoxClass.0
jnxBoxDescr.0 = Juniper m20 Internet Backbone Router
For information about a number of router components, list each one separately:
142 | Chapter 4: SNMP
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