Translating pysnmp oids to human readable strings

[Guest]

Hey list,

I was given a task, to reproduce functionality of command specified
below by writing proper python functions to reuse in some monitoring
script:

rivendell# snmpwalk -Os -mALL -v1 -cgabilgathol 10.0.6.66
..1.3.6.1.4.1.2636.5.1.1.2
jnxBgpM2PeerIdentifier.0.ipv4."".unknown."".0.1.38.101.87.145 =
STRING: 66.250.1.253
jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118 =
STRING: 66.28.1.85
jnxBgpM2PeerIdentifier.0.ipv4.64.200.59.74.1.64.200.59.73 = STRING: 64.200.68.12
jnxBgpM2PeerIdentifier.0.ipv4.72.37.131.250.1.72.37.131.249 = STRING:
64.235.224.240
jnxBgpM2PeerState.0.ipv4."".unknown."".0.1.38.101.87.145 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.38.101.161.119.1.38.101.161.118 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.64.200.59.74.1.64.200.59.73 = INTEGER: established(6)
jnxBgpM2PeerState.0.ipv4.72.37.131.250.1.72.37.131.249 = INTEGER: established(6)
(more output)

I have already found a pysnmp library to fetch the data from the
device with a minimal amount of code:

from pysnmp.entity.rfc3413.oneliner import cmdgen
from pysnmp.smi import *
import string

cmdGen = cmdgen.CommandGenerator()
errorIndication, errorStatus, errorIndex, varBinds =
cmdgen.CommandGenerator().nextCmd(cmdgen.CommunityData('AmonMuil',
'gabilgathol', 0),
cmdgen.UdpTransportTarget(('fw-1.datacenter.gondor.net', 161)),
(1,3,6,1,4,1,2636,5,1,1,2))

print errorIndication, errorStatus
for i in varBinds:
print i

The problem is that I have completely stuck on the result I am
experiencing being totally human unreadable, like this:

rivendell# python snmp.py
None 0
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.0.0.0.0.1.38.101.87.145'),
OctetString('B\xfa\x01\xfd'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.38.101.161.119.1.38.101.161.118'),
OctetString('B\x1c\x01U'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.64.200.59.74.1.64.200.59.73'),
OctetString('@\xc8D\x0c'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.72.37.131.250.1.72.37.131.249'),
OctetString('@\xeb\xe0\xf0'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.0.0.0.0.1.38.101.87.145'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.38.101.161.119.1.38.101.161.118'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.64.200.59.74.1.64.200.59.73'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.72.37.131.250.1.72.37.131.249'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.3.0.1.0.0.0.0.1.38.101.87.145'),
Integer32('2'))]

Since I cant find any way to translate these numbers to the same thing
snmpwalk produce, is there any clue on how to achieve that? Is it
possible at all for different devices (this one happend to be Juniper
firewall if that does matter). Also, how can I know where does this
magic oid ends and where does additional information starts (like ip
addresses added to oid 0 they all looks like another oid string
numbers) ?

Any sample of code, or hint to another lib will be very appreciated!

 

[birdsong]

Hey list,

I was given a task, to reproduce functionality of command specified
below by writing proper python functions to reuse in some monitoring
script:

rivendell# snmpwalk -Os -mALL -v1 -cgabilgathol 10.0.6.66
.1.3.6.1.4.1.2636.5.1.1.2
jnxBgpM2PeerIdentifier.0.ipv4."".unknown."".0.1.38.101.87.145 =
STRING: 66.250.1.253
jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118 =
STRING: 66.28.1.85
jnxBgpM2PeerIdentifier.0.ipv4.64.200.59.74.1.64.200.59.73 = STRING: 64.200.68.12
jnxBgpM2PeerIdentifier.0.ipv4.72.37.131.250.1.72.37.131.249 = STRING:
64.235.224.240
jnxBgpM2PeerState.0.ipv4."".unknown."".0.1.38.101.87.145 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.38.101.161.119.1.38.101.161.118 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.64.200.59.74.1.64.200.59.73 = INTEGER: established(6)
jnxBgpM2PeerState.0.ipv4.72.37.131.250.1.72.37.131.249 = INTEGER: established(6)
(more output)

I have already found a pysnmp library to fetch the data from the
device with a minimal amount of code:

from pysnmp.entity.rfc3413.oneliner import cmdgen
from pysnmp.smi import *
import string

cmdGen = cmdgen.CommandGenerator()
errorIndication, errorStatus, errorIndex, varBinds =
cmdgen.CommandGenerator().nextCmd(cmdgen.CommunityData('AmonMuil',
'gabilgathol', 0),
cmdgen.UdpTransportTarget(('fw-1.datacenter.gondor.net', 161)),
(1,3,6,1,4,1,2636,5,1,1,2))

print errorIndication, errorStatus
for i in varBinds:
    print i

The problem is that I have completely stuck on the result I am
experiencing being totally human unreadable, like this:

rivendell# python snmp.py
None 0
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.0.0.0.0.1.38.101.87.145'),
OctetString('B\xfa\x01\xfd'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.38.101.161.119.1.38.101.161.118'),
OctetString('B\x1c\x01U'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.64.200.59.74.1.64.200.59.73'),
OctetString('@\xc8D\x0c'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.72.37.131.250.1.72.37.131.249'),
OctetString('@\xeb\xe0\xf0'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.0.0.0.0.1.38.101.87.145'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.38.101.161.119.1.38.101.161.118'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.64.200.59.74.1.64.200.59.73'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.72.37.131.250.1.72.37.131.249'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.3.0.1.0.0.0.0.1.38.101.87.145'),
Integer32('2'))]

Since I cant find any way to translate these numbers to the same thing
snmpwalk produce, is there any clue on how to achieve that? Is it
possible at all for different devices (this one happend to be Juniper
firewall if that does matter). Also, how can I know where does this
magic oid ends and where does additional information starts (like ip
addresses added to oid 0 they all looks like another oid string
numbers) ?

Any sample of code, or hint to another lib will be very appreciated!

Here's an example of walk that's part of a class I wrote, hopefully
indentation survives the paste. I borrowed heavily from example code
on the pysnmp site.

from pysnmp import asn1, v2c
from pysnmp import role

def walk(self, community_string, base_oids):

if type(base_oids) is str: base_oids = [base_oids]
# this this does what it says, dont bother asking for oids that
we'll see in our walk
base_oids = self.remove_child_oids(base_oids)
# h_pair is just (host, port)
client = role.manager(self.h_pair)
client.timeout = 10
req = v2c.GETNEXTREQUEST(community=community_string)
rsp = v2c.GETRESPONSE()
req['encoded_oids'] = map(asn1.OBJECTID().encode, base_oids)

oids_values = {}
while req['encoded_oids']:
try:
answer, host_tuple = client.send_and_receive(req.encode())
except (role.NoResponse, role.NetworkError):
return oids_values

rsp.decode(answer)

parsed_oids_vals = self.parse_response(rsp, base_oids)
oids_values.update(parsed_oids_vals)

req['request_id'] += 1
req['encoded_oids'] = map(asn1.OBJECTID().encode,
parsed_oids_vals.keys())

return oids_values

 

[birdsong]

Hey list,

I was given a task, to reproduce functionality of command specified
below by writing proper python functions to reuse in some monitoring
script:

rivendell# snmpwalk -Os -mALL -v1 -cgabilgathol 10.0.6.66
.1.3.6.1.4.1.2636.5.1.1.2
jnxBgpM2PeerIdentifier.0.ipv4."".unknown."".0.1.38.101.87.145 =
STRING: 66.250.1.253
jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118 =
STRING: 66.28.1.85
jnxBgpM2PeerIdentifier.0.ipv4.64.200.59.74.1.64.200.59.73 = STRING: 64.200.68.12
jnxBgpM2PeerIdentifier.0.ipv4.72.37.131.250.1.72.37.131.249 = STRING:
64.235.224.240
jnxBgpM2PeerState.0.ipv4."".unknown."".0.1.38.101.87.145 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.38.101.161.119.1.38.101.161.118 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.64.200.59.74.1.64.200.59.73 = INTEGER: established(6)
jnxBgpM2PeerState.0.ipv4.72.37.131.250.1.72.37.131.249 = INTEGER: established(6)
(more output)

I have already found a pysnmp library to fetch the data from the
device with a minimal amount of code:

from pysnmp.entity.rfc3413.oneliner import cmdgen
from pysnmp.smi import *
import string

cmdGen = cmdgen.CommandGenerator()
errorIndication, errorStatus, errorIndex, varBinds =
cmdgen.CommandGenerator().nextCmd(cmdgen.CommunityData('AmonMuil',
'gabilgathol', 0),
cmdgen.UdpTransportTarget(('fw-1.datacenter.gondor.net', 161)),
(1,3,6,1,4,1,2636,5,1,1,2))

print errorIndication, errorStatus
for i in varBinds:
    print i

The problem is that I have completely stuck on the result I am
experiencing being totally human unreadable, like this:

rivendell# python snmp.py
None 0
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.0.0.0.0.1.38.101.87.145'),
OctetString('B\xfa\x01\xfd'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.38.101.161.119.1.38.101.161.118'),
OctetString('B\x1c\x01U'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.64.200.59.74.1.64.200.59.73'),
OctetString('@\xc8D\x0c'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.72.37.131.250.1.72.37.131.249'),
OctetString('@\xeb\xe0\xf0'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.0.0.0.0.1.38.101.87.145'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.38.101.161.119.1.38.101.161.118'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.64.200.59.74.1.64.200.59.73'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.72.37.131.250.1.72.37.131.249'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.3.0.1.0.0.0.0.1.38.101.87.145'),
Integer32('2'))]

Since I cant find any way to translate these numbers to the same thing
snmpwalk produce, is there any clue on how to achieve that? Is it
possible at all for different devices (this one happend to be Juniper
firewall if that does matter). Also, how can I know where does this
magic oid ends and where does additional information starts (like ip
addresses added to oid 0 they all looks like another oid string
numbers) ?

Any sample of code, or hint to another lib will be very appreciated!

Here's an example of walk that's part of a class I wrote, hopefully
indentation survives the paste.  I borrowed heavily from example code
on the pysnmp site.

from pysnmp import asn1, v2c
from pysnmp import role

  def walk(self, community_string, base_oids):

    if type(base_oids) is str: base_oids = [base_oids]
    # this this does what it says, dont bother asking for oids that
we'll see in our walk
    base_oids = self.remove_child_oids(base_oids)
    # h_pair is just (host, port)
    client = role.manager(self.h_pair)
    client.timeout = 10
    req = v2c.GETNEXTREQUEST(community=community_string)
    rsp = v2c.GETRESPONSE()
    req['encoded_oids'] = map(asn1.OBJECTID().encode, base_oids)

    oids_values = {}
    while req['encoded_oids']:
      try:
        answer, host_tuple = client.send_and_receive(req.encode())
      except (role.NoResponse, role.NetworkError):
        return oids_values

      rsp.decode(answer)

      parsed_oids_vals = self.parse_response(rsp, base_oids)
      oids_values.update(parsed_oids_vals)

      req['request_id'] += 1
      req['encoded_oids'] = map(asn1.OBJECTID().encode,
parsed_oids_vals.keys())

    return oids_values

Just realized the parse_response() is needed to makes sense of it:

def parse_response(self, rsp, head_oids):
# list of indices
overshot_oids = []

vals = map(lambda x: x[0](), map(asn1.decode, rsp
['encoded_vals']))
oids = map(lambda x: asn1.OBJECTID().decode(x)[0], rsp
['encoded_oids'])
oids_vals = dict(map(None, oids, vals))

for oid in oids_vals:
if not filter(lambda h: asn1.OBJECTID(h).isaprefix(oid),
head_oids):
overshot_oids.append(oid)

map(lambda x: oids_vals.pop(x), overshot_oids)

return oids_vals


I welcome critique btw, I'm here to learn.

 

[Guest]

Hey list,

I was given a task, to reproduce functionality of command specified
below by writing proper python functions to reuse in some monitoring
script:

rivendell# snmpwalk -Os -mALL -v1 -cgabilgathol 10.0.6.66
.1.3.6.1.4.1.2636.5.1.1.2
jnxBgpM2PeerIdentifier.0.ipv4."".unknown."".0.1.38.101.87.145 =
STRING: 66.250.1.253
jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118 =
STRING: 66.28.1.85
jnxBgpM2PeerIdentifier.0.ipv4.64.200.59.74.1.64.200.59.73 = STRING: 64.200.68.12
jnxBgpM2PeerIdentifier.0.ipv4.72.37.131.250.1.72.37.131.249 = STRING:
64.235.224.240
jnxBgpM2PeerState.0.ipv4."".unknown."".0.1.38.101.87.145 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.38.101.161.119.1.38.101.161.118 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.64.200.59.74.1.64.200.59.73 = INTEGER: established(6)
jnxBgpM2PeerState.0.ipv4.72.37.131.250.1.72.37.131.249 = INTEGER: established(6)
(more output)

I have already found a pysnmp library to fetch the data from the
device with a minimal amount of code:

from pysnmp.entity.rfc3413.oneliner import cmdgen
from pysnmp.smi import *
import string

cmdGen = cmdgen.CommandGenerator()
errorIndication, errorStatus, errorIndex, varBinds =
cmdgen.CommandGenerator().nextCmd(cmdgen.CommunityData('AmonMuil',
'gabilgathol', 0),
cmdgen.UdpTransportTarget(('fw-1.datacenter.gondor.net', 161)),
(1,3,6,1,4,1,2636,5,1,1,2))

print errorIndication, errorStatus
for i in varBinds:
    print i

The problem is that I have completely stuck on the result I am
experiencing being totally human unreadable, like this:

rivendell# python snmp.py
None 0
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.0.0.0.0.1.38.101.87..145'),
OctetString('B\xfa\x01\xfd'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.38.101.161.119.1.38..101.161.118'),
OctetString('B\x1c\x01U'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.64.200.59.74.1.64.200.59.73'),
OctetString('@\xc8D\x0c'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.72.37.131.250.1.72.37.131.249'),
OctetString('@\xeb\xe0\xf0'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.0.0.0.0.1.38.101.87..145'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.38.101.161.119.1.38..101.161.118'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.64.200.59.74.1.64.200.59.73'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.72.37.131.250.1.72.37.131.249'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.3.0.1.0.0.0.0.1.38.101.87..145'),
Integer32('2'))]

Since I cant find any way to translate these numbers to the same thing
snmpwalk produce, is there any clue on how to achieve that? Is it
possible at all for different devices (this one happend to be Juniper
firewall if that does matter). Also, how can I know where does this
magic oid ends and where does additional information starts (like ip
addresses added to oid 0 they all looks like another oid string
numbers) ?

Any sample of code, or hint to another lib will be very appreciated!

Here's an example of walk that's part of a class I wrote, hopefully
indentation survives the paste.  I borrowed heavily from example code
on the pysnmp site.

from pysnmp import asn1, v2c
from pysnmp import role

  def walk(self, community_string, base_oids):

    if type(base_oids) is str: base_oids = [base_oids]
    # this this does what it says, dont bother asking for oids that
we'll see in our walk
    base_oids = self.remove_child_oids(base_oids)
    # h_pair is just (host, port)
    client = role.manager(self.h_pair)
    client.timeout = 10
    req = v2c.GETNEXTREQUEST(community=community_string)
    rsp = v2c.GETRESPONSE()
    req['encoded_oids'] = map(asn1.OBJECTID().encode, base_oids)

    oids_values = {}
    while req['encoded_oids']:
      try:
        answer, host_tuple = client.send_and_receive(req.encode())
      except (role.NoResponse, role.NetworkError):
        return oids_values

      rsp.decode(answer)

      parsed_oids_vals = self.parse_response(rsp, base_oids)
      oids_values.update(parsed_oids_vals)

      req['request_id'] += 1
      req['encoded_oids'] = map(asn1.OBJECTID().encode,
parsed_oids_vals.keys())

    return oids_values

Just realized the parse_response() is needed to makes sense of it:

def parse_response(self, rsp, head_oids):
   # list of indices
   overshot_oids = []

   vals = map(lambda x: x[0](), map(asn1.decode, rsp
['encoded_vals']))
   oids = map(lambda x: asn1.OBJECTID().decode(x)[0], rsp
['encoded_oids'])
   oids_vals = dict(map(None, oids, vals))

   for oid in oids_vals:
     if not filter(lambda h: asn1.OBJECTID(h).isaprefix(oid),
head_oids):
       overshot_oids.append(oid)

   map(lambda x: oids_vals.pop(x), overshot_oids)

   return oids_vals


I welcome critique btw, I'm here to learn.

Sorry, but I dont understand the code at all. Where does it takes the
names for the oid numbers? Why the translation needs a 'walk' at all?
Isnt that possible to perform an acion on given oid (my code produces
a list of them) to translate it to human readable output like snmpwalk
binary does?

 

[birdsong]

On Mar 5, 12:32 pm, SpamMePlease PleasePlease
Hey list,
I was given a task, to reproduce functionality of command specified
below by writing proper python functions to reuse in some monitoring
script:
rivendell# snmpwalk -Os -mALL -v1 -cgabilgathol 10.0.6.66
.1.3.6.1.4.1.2636.5.1.1.2
jnxBgpM2PeerIdentifier.0.ipv4."".unknown."".0.1.38.101.87.145 =
STRING: 66.250.1.253
jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118 =
STRING: 66.28.1.85
jnxBgpM2PeerIdentifier.0.ipv4.64.200.59.74.1.64.200.59.73 = STRING: 64.200.68.12
jnxBgpM2PeerIdentifier.0.ipv4.72.37.131.250.1.72.37.131.249 = STRING:
64.235.224.240
jnxBgpM2PeerState.0.ipv4."".unknown."".0.1.38.101.87.145 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.38.101.161.119.1.38.101.161.118 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.64.200.59.74.1.64.200.59.73 = INTEGER: established(6)
jnxBgpM2PeerState.0.ipv4.72.37.131.250.1.72.37.131.249 = INTEGER: established(6)
(more output)
I have already found a pysnmp library to fetch the data from the
device with a minimal amount of code:
from pysnmp.entity.rfc3413.oneliner import cmdgen
from pysnmp.smi import *
import string
cmdGen = cmdgen.CommandGenerator()
errorIndication, errorStatus, errorIndex, varBinds =
cmdgen.CommandGenerator().nextCmd(cmdgen.CommunityData('AmonMuil',
'gabilgathol', 0),
cmdgen.UdpTransportTarget(('fw-1.datacenter.gondor.net', 161)),
(1,3,6,1,4,1,2636,5,1,1,2))
print errorIndication, errorStatus
for i in varBinds:
    print i
The problem is that I have completely stuck on the result I am
experiencing being totally human unreadable, like this:
rivendell# python snmp.py
None 0
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.0.0.0.0.1.38.101.87.145'),
OctetString('B\xfa\x01\xfd'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.38.101.161.119.1.38.101.161.118'),
OctetString('B\x1c\x01U'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.64.200.59.74.1.64..200.59.73'),
OctetString('@\xc8D\x0c'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.72.37.131.250.1.72.37.131.249'),
OctetString('@\xeb\xe0\xf0'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.0.0.0.0.1.38.101.87.145'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.38.101.161.119.1.38.101.161.118'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.64.200.59.74.1.64..200.59.73'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.72.37.131.250.1.72.37.131.249'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.3.0.1.0.0.0.0.1.38.101.87.145'),
Integer32('2'))]
Since I cant find any way to translate these numbers to the same thing
snmpwalk produce, is there any clue on how to achieve that? Is it
possible at all for different devices (this one happend to be Juniper
firewall if that does matter). Also, how can I know where does this
magic oid ends and where does additional information starts (like ip
addresses added to oid 0 they all looks like another oid string
numbers) ?
Any sample of code, or hint to another lib will be very appreciated!
--
--------------------
Spank The Spam!
Here's an example of walk that's part of a class I wrote, hopefully
indentation survives the paste.  I borrowed heavily from example code
on the pysnmp site.
from pysnmp import asn1, v2c
from pysnmp import role
  def walk(self, community_string, base_oids):
    if type(base_oids) is str: base_oids = [base_oids]
    # this this does what it says, dont bother asking for oids that
we'll see in our walk
    base_oids = self.remove_child_oids(base_oids)
    # h_pair is just (host, port)
    client = role.manager(self.h_pair)
    client.timeout = 10
    req = v2c.GETNEXTREQUEST(community=community_string)
    rsp = v2c.GETRESPONSE()
    req['encoded_oids'] = map(asn1.OBJECTID().encode, base_oids)
    oids_values = {}
    while req['encoded_oids']:
      try:
        answer, host_tuple = client.send_and_receive(req.encode())
      except (role.NoResponse, role.NetworkError):
        return oids_values
      rsp.decode(answer)
      parsed_oids_vals = self.parse_response(rsp, base_oids)
      oids_values.update(parsed_oids_vals)
      req['request_id'] += 1
      req['encoded_oids'] = map(asn1.OBJECTID().encode,
parsed_oids_vals.keys())
    return oids_values

Just realized the parse_response() is needed to makes sense of it:

def parse_response(self, rsp, head_oids):
   # list of indices
   overshot_oids = []

   vals = map(lambda x: x[0](), map(asn1.decode, rsp
['encoded_vals']))
   oids = map(lambda x: asn1.OBJECTID().decode(x)[0], rsp
['encoded_oids'])
   oids_vals = dict(map(None, oids, vals))

   for oid in oids_vals:
     if not filter(lambda h: asn1.OBJECTID(h).isaprefix(oid),
head_oids):
       overshot_oids.append(oid)

   map(lambda x: oids_vals.pop(x), overshot_oids)

   return oids_vals

I welcome critique btw, I'm here to learn.

Sorry, but I dont understand the code at all. Where does it takes the
names for the oid numbers? Why the translation needs a 'walk' at all?
Isnt that possible to perform an acion on given oid (my code produces
a list of them) to translate it to human readable output like snmpwalk
binary does?

I haven't looked at the newer version of pysnmp, but I dont know if
there's a library that maps oids to human readable oids. Besides, I
didn't really need to read the OIDs as a human, I wanted the values
for injecting into data stores. Here's a link I found really helpful
while figuring out my necessary OIDs
http://www.oid-info.com/

I was responding to your call for example code. I didn't get this in
the first 2 hours I poured over pysnmp either. Experiment in the
interpreter, you'll get it. You should be able to use my two functions
with very minor editing to walk an oid and return values in a
dictionary. The values will have already been decoded to something you
should recognize.

 

[Shantanu Joshi]

You need to parse the MIB file to get the human-readable names
corresponding to the OIDs. The pysnmp library already provides this
functionality. I haven't used this feature myself (I mainly use pysnmp
to automate SNMP walk requests, like the one in your code), but the
documentation at found the below example at
http://pysnmp.sourceforge.net/docs/4.1.x/index.html#MIB-SERVICES.

()

 

[Guest]

You need to parse the MIB file to get the human-readable names
corresponding to the OIDs. The pysnmp library already provides this
functionality. I haven't used this feature myself (I mainly use pysnmp
to automate SNMP walk requests, like the one in your code), but the
documentation at found the below example at
http://pysnmp.sourceforge.net/docs/4.1.x/index.html#MIB-SERVICES.


()

Yes, I have seen that, but I cant get it working as expected (or it
doesent to what expected at all). I cant make it return values like:
jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118 (the one
of many I got from snmpwalk) but instead I am getting bunch of words
like iso, internet, mgmt, which is no way close to desired effect.
Still no luck - anybody with a clue?

 

[Guest]

On Mar 5, 12:32 pm, SpamMePlease PleasePlease

Hey list,

I was given a task, to reproduce functionality of command specified
below by writing proper python functions to reuse in some monitoring
script:

rivendell# snmpwalk -Os -mALL -v1 -cgabilgathol 10.0.6.66
.1.3.6.1.4.1.2636.5.1.1.2
jnxBgpM2PeerIdentifier.0.ipv4."".unknown."".0.1.38.101.87.145 =
STRING: 66.250.1.253
jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118 =
STRING: 66.28.1.85
jnxBgpM2PeerIdentifier.0.ipv4.64.200.59.74.1.64.200.59.73 = STRING: 64.200.68.12
jnxBgpM2PeerIdentifier.0.ipv4.72.37.131.250.1.72.37.131.249 = STRING:
64.235.224.240
jnxBgpM2PeerState.0.ipv4."".unknown."".0.1.38.101.87.145 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.38.101.161.119.1.38.101.161.118 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.64.200.59.74.1.64.200.59.73 = INTEGER: established(6)
jnxBgpM2PeerState.0.ipv4.72.37.131.250.1.72.37.131.249 = INTEGER: established(6)
(more output)

I have already found a pysnmp library to fetch the data from the
device with a minimal amount of code:

from pysnmp.entity.rfc3413.oneliner import cmdgen
from pysnmp.smi import *
import string

cmdGen = cmdgen.CommandGenerator()
errorIndication, errorStatus, errorIndex, varBinds =
cmdgen.CommandGenerator().nextCmd(cmdgen.CommunityData('AmonMuil',
'gabilgathol', 0),
cmdgen.UdpTransportTarget(('fw-1.datacenter.gondor.net', 161)),
(1,3,6,1,4,1,2636,5,1,1,2))

print errorIndication, errorStatus
for i in varBinds:
    print i

The problem is that I have completely stuck on the result I am
experiencing being totally human unreadable, like this:

rivendell# python snmp.py
None 0
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.0.0.0.0.1.38.101..87.145'),
OctetString('B\xfa\x01\xfd'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.38.101.161.119.1..38.101.161.118'),
OctetString('B\x1c\x01U'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.64.200.59.74.1.64.200.59.73'),
OctetString('@\xc8D\x0c'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.72.37.131.250.1.72.37.131.249'),
OctetString('@\xeb\xe0\xf0'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.0.0.0.0.1.38.101..87.145'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.38.101.161.119.1..38.101.161.118'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.64.200.59.74.1.64.200.59.73'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.72.37.131.250.1.72.37.131.249'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.3.0.1.0.0.0.0.1.38.101..87.145'),
Integer32('2'))]

Since I cant find any way to translate these numbers to the same thing
snmpwalk produce, is there any clue on how to achieve that? Is it
possible at all for different devices (this one happend to be Juniper
firewall if that does matter). Also, how can I know where does this
magic oid ends and where does additional information starts (like ip
addresses added to oid 0 they all looks like another oid string
numbers) ?

Any sample of code, or hint to another lib will be very appreciated!

Here's an example of walk that's part of a class I wrote, hopefully
indentation survives the paste.  I borrowed heavily from example code
on the pysnmp site.

from pysnmp import asn1, v2c
from pysnmp import role

  def walk(self, community_string, base_oids):

    if type(base_oids) is str: base_oids = [base_oids]
    # this this does what it says, dont bother asking for oids that
we'll see in our walk
    base_oids = self.remove_child_oids(base_oids)
    # h_pair is just (host, port)
    client = role.manager(self.h_pair)
    client.timeout = 10
    req = v2c.GETNEXTREQUEST(community=community_string)
    rsp = v2c.GETRESPONSE()
    req['encoded_oids'] = map(asn1.OBJECTID().encode, base_oids)

    oids_values = {}
    while req['encoded_oids']:
      try:
        answer, host_tuple = client.send_and_receive(req.encode())
      except (role.NoResponse, role.NetworkError):
        return oids_values

      rsp.decode(answer)

      parsed_oids_vals = self.parse_response(rsp, base_oids)
      oids_values.update(parsed_oids_vals)

      req['request_id'] += 1
      req['encoded_oids'] = map(asn1.OBJECTID().encode,
parsed_oids_vals.keys())

    return oids_values

Just realized the parse_response() is needed to makes sense of it:

def parse_response(self, rsp, head_oids):
   # list of indices
   overshot_oids = []

   vals = map(lambda x: x[0](), map(asn1.decode, rsp
['encoded_vals']))
   oids = map(lambda x: asn1.OBJECTID().decode(x)[0], rsp
['encoded_oids'])
   oids_vals = dict(map(None, oids, vals))

   for oid in oids_vals:
     if not filter(lambda h: asn1.OBJECTID(h).isaprefix(oid),
head_oids):
       overshot_oids.append(oid)

   map(lambda x: oids_vals.pop(x), overshot_oids)

   return oids_vals

I welcome critique btw, I'm here to learn.

Sorry, but I dont understand the code at all. Where does it takes the
names for the oid numbers? Why the translation needs a 'walk' at all?
Isnt that possible to perform an acion on given oid (my code produces
a list of them) to translate it to human readable output like snmpwalk
binary does?

I haven't looked at the newer version of pysnmp, but I dont know if
there's a library that maps oids to human readable oids.  Besides, I
didn't really need to read the OIDs as a human, I wanted the values
for injecting into data stores.  Here's a link I found really helpful
while figuring out my necessary OIDs
http://www.oid-info.com/

Well, lucky you. Unfortunately I do need this oids in human readable
form, as I need to present them (output of my code) to humans.

I was responding to your call for example code.  I didn't get this in
the first 2 hours I poured over pysnmp either. Experiment in the
interpreter, you'll get it. You should be able to use my two functions
with very minor editing to walk an oid and return values in a
dictionary. The values will have already been decoded to something you
should recognize.

My call for example code was for code that actually translates
"1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.0.0.0.0.1.38.101.87.145" to
"jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118" so the
second one could be read by human to make some decisions. I dont
really need to walk oids, as my small code already gives me even more
than I need, now I just have to translate them to the same form as
snmpwalk binary does. And I have no idea how to do so.

 

[Shantanu Joshi]

Yes, I have seen that, but I cant get it working as expected (or it
doesent to what expected at all). I cant make it return values like:
jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118 (the one
of many I got from snmpwalk) but instead I am getting bunch of words
like iso, internet, mgmt, which is no way close to desired effect.
Still no luck - anybody with a clue?

Every node in a MIB file is rooted at iso.org.dod.internet.
jnxBgpM2PeerIdentifier has OID .1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1
(if I've got the right MIB, I searched for jnxBgpM2PeerIdentifier on
Google and got the BGP4-V2-MIB-JUNIPER MIB file). The .1.3.6.1.4.1
corresponds to iso.org.dod.internet.private.enterprises, so you can
safely skip that part. The next value 2636, is uniquely assigned to
Juniper, and the rest is up to whatever scheme Juniper uses to prepare
mibs.

The pysnmp library doesn't know anything about BGP4-V2-MIB-JUNIPER MIB,
since it is not one of the standard MIBS, so it will parse everything up
to what is defined in the standard mibs and return the rest in numeric
form. There was a paragraph on the page I linked which described how to
prepare MIB files for consumption by pysnmp. Did you try that?

 

[birdsong]

On Mar 5, 12:32 pm, SpamMePlease PleasePlease
Hey list,
I was given a task, to reproduce functionality of command specified
below by writing proper python functions to reuse in some monitoring
script:
rivendell# snmpwalk -Os -mALL -v1 -cgabilgathol 10.0.6.66
.1.3.6.1.4.1.2636.5.1.1.2
jnxBgpM2PeerIdentifier.0.ipv4."".unknown."".0.1.38.101.87.145 =
STRING: 66.250.1.253
jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118 =
STRING: 66.28.1.85
jnxBgpM2PeerIdentifier.0.ipv4.64.200.59.74.1.64.200.59.73 = STRING: 64.200.68.12
jnxBgpM2PeerIdentifier.0.ipv4.72.37.131.250.1.72.37.131.249 = STRING:
64.235.224.240
jnxBgpM2PeerState.0.ipv4."".unknown."".0.1.38.101.87.145 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.38.101.161.119.1.38.101.161.118 = INTEGER:
established(6)
jnxBgpM2PeerState.0.ipv4.64.200.59.74.1.64.200.59.73 = INTEGER: established(6)
jnxBgpM2PeerState.0.ipv4.72.37.131.250.1.72.37.131.249 = INTEGER: established(6)
(more output)
I have already found a pysnmp library to fetch the data from the
device with a minimal amount of code:
from pysnmp.entity.rfc3413.oneliner import cmdgen
from pysnmp.smi import *
import string
cmdGen = cmdgen.CommandGenerator()
errorIndication, errorStatus, errorIndex, varBinds =
cmdgen.CommandGenerator().nextCmd(cmdgen.CommunityData('AmonMuil',
'gabilgathol', 0),
cmdgen.UdpTransportTarget(('fw-1.datacenter.gondor.net', 161)),
(1,3,6,1,4,1,2636,5,1,1,2))
print errorIndication, errorStatus
for i in varBinds:
    print i
The problem is that I have completely stuck on the result I am
experiencing being totally human unreadable, like this:
rivendell# python snmp.py
None 0
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.0.0.0.0.1.38.101.87.145'),
OctetString('B\xfa\x01\xfd'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.38.101.161.119..1.38.101.161.118'),
OctetString('B\x1c\x01U'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.64.200.59.74.1..64.200.59.73'),
OctetString('@\xc8D\x0c'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.72.37.131.250.1.72.37.131.249'),
OctetString('@\xeb\xe0\xf0'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.0.0.0.0.1.38.101.87.145'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.38.101.161.119..1.38.101.161.118'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.64.200.59.74.1..64.200.59.73'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.2.0.1.72.37.131.250.1.72.37.131.249'),
Integer32('6'))]
[(ObjectName('1.3.6.1.4.1.2636.5.1.1.2.1.1.1.3.0.1.0.0.0.0.1.38.101.87.145'),
Integer32('2'))]
Since I cant find any way to translate these numbers to the same thing
snmpwalk produce, is there any clue on how to achieve that? Is it
possible at all for different devices (this one happend to be Juniper
firewall if that does matter). Also, how can I know where does this
magic oid ends and where does additional information starts (like ip
addresses added to oid 0 they all looks like another oid string
numbers) ?
Any sample of code, or hint to another lib will be very appreciated!
--
--------------------
Spank The Spam!
Here's an example of walk that's part of a class I wrote, hopefully
indentation survives the paste.  I borrowed heavily from example code
on the pysnmp site.
from pysnmp import asn1, v2c
from pysnmp import role
  def walk(self, community_string, base_oids):
    if type(base_oids) is str: base_oids = [base_oids]
    # this this does what it says, dont bother asking for oids that
we'll see in our walk
    base_oids = self.remove_child_oids(base_oids)
    # h_pair is just (host, port)
    client = role.manager(self.h_pair)
    client.timeout = 10
    req = v2c.GETNEXTREQUEST(community=community_string)
    rsp = v2c.GETRESPONSE()
    req['encoded_oids'] = map(asn1.OBJECTID().encode, base_oids)
    oids_values = {}
    while req['encoded_oids']:
      try:
        answer, host_tuple = client.send_and_receive(req.encode())
      except (role.NoResponse, role.NetworkError):
        return oids_values
      rsp.decode(answer)
      parsed_oids_vals = self.parse_response(rsp, base_oids)
      oids_values.update(parsed_oids_vals)
      req['request_id'] += 1
      req['encoded_oids'] = map(asn1.OBJECTID().encode,
parsed_oids_vals.keys())
    return oids_values
Just realized the parse_response() is needed to makes sense of it:
def parse_response(self, rsp, head_oids):
   # list of indices
   overshot_oids = []
   vals = map(lambda x: x[0](), map(asn1.decode, rsp
['encoded_vals']))
   oids = map(lambda x: asn1.OBJECTID().decode(x)[0], rsp
['encoded_oids'])
   oids_vals = dict(map(None, oids, vals))
   for oid in oids_vals:
     if not filter(lambda h: asn1.OBJECTID(h).isaprefix(oid),
head_oids):
       overshot_oids.append(oid)
   map(lambda x: oids_vals.pop(x), overshot_oids)
   return oids_vals
I welcome critique btw, I'm here to learn.
--
http://mail.python.org/mailman/listinfo/python-list
Sorry, but I dont understand the code at all. Where does it takes the
names for the oid numbers? Why the translation needs a 'walk' at all?
Isnt that possible to perform an acion on given oid (my code produces
a list of them) to translate it to human readable output like snmpwalk
binary does?

I haven't looked at the newer version of pysnmp, but I dont know if
there's a library that maps oids to human readable oids.  Besides, I
didn't really need to read the OIDs as a human, I wanted the values
for injecting into data stores.  Here's a link I found really helpful
while figuring out my necessary OIDs
http://www.oid-info.com/

Well, lucky you. Unfortunately I do need this oids in human readable
form, as I need to present them (output of my code) to humans.

I was responding to your call for example code.  I didn't get this in
the first 2 hours I poured over pysnmp either. Experiment in the
interpreter, you'll get it. You should be able to use my two functions
with very minor editing to walk an oid and return values in a
dictionary. The values will have already been decoded to something you
should recognize.

My call for example code was for code that actually translates
"1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1.0.1.0.0.0.0.1.38.101.87.145" to
"jnxBgpM2PeerIdentifier.0.ipv4.38.101.161.119.1.38.101.161.118" so the
second one could be read by human to make some decisions. I dont
really need to walk oids, as my small code already gives me even more
than I need, now I just have to translate them to the same form as
snmpwalk binary does. And I have no idea how to do so.

Words like iso, internet, mgmt ? Who'da thunk?

One from one guy who doesn't have a 'clue' to another of the same,
best of luck in your python snmp endeavors.

 

[Guest]

Every node in a MIB file is rooted at iso.org.dod.internet.
jnxBgpM2PeerIdentifier has OID .1.3.6.1.4.1.2636.5.1.1.2.1.1.1.1
(if I've got the right MIB, I searched for jnxBgpM2PeerIdentifier on
Google and got the BGP4-V2-MIB-JUNIPER MIB file). The .1.3.6.1.4.1
corresponds to iso.org.dod.internet.private.enterprises, so you can
safely skip that part. The next value 2636, is uniquely assigned to
Juniper, and the rest is up to whatever scheme Juniper uses to prepare
mibs.

The pysnmp library doesn't know anything about BGP4-V2-MIB-JUNIPER MIB,
since it is not one of the standard MIBS, so it will parse everything up
to what is defined in the standard mibs and return the rest in numeric
form. There was a paragraph on the page I linked which described how to
prepare MIB files for consumption by pysnmp. Did you try that?

Thats a good one, sir! I managed to create jnx-bgpmib2.py out from
/usr/share/snmp/mibs/jnx-bgpmib2.txt that contains the mibs snmpwalk
found for me. Now, in what way can I 'feed' the pysnmp with this new
file and how to ask it kindly to convert these number strings into
nice readable strings?

 

[Shantanu Joshi]

I actually tried to load the new file with following code:

print builder.MibBuilder().getMibPath()
mibBuilder = builder.MibBuilder().loadModules('jnx-bgpmib2')

but I am experiencing the error:

rivendell # python snmp.py
('/usr/lib/python2.4/site-packages/pysnmp/v4/smi/mibs/instances',
'/usr/lib/python2.4/site-packages/pysnmp/v4/smi/mibs')
Traceback (most recent call last):
File "snmp.py", line 7, in ?
mibBuilder = builder.MibBuilder().loadModules('jnx-bgpmib2')
File "//usr/lib/python2.4/site-packages/pysnmp/v4/smi/builder.py",
line 82, in loadModules
raise error.SmiError(
pysnmp.smi.error.SmiError: MIB module
"/usr/lib/python2.4/site-packages/pysnmp/v4/smi/mibs/instances/jnx-bgpmib2.py"
load error: MIB file ".py" not found in search path
rivendell# ls -lA
/usr/lib/python2.4/site-packages/pysnmp/v4/smi/mibs/instances/jnx-bgpmib2.py
-rw-r--r-- 1 root root 2687 Mar 6 06:50
/usr/lib/python2.4/site-packages/pysnmp/v4/smi/mibs/instances/jnx-bgpmib2.py

Any clue what about is done wrong?

The pysnmp library is not able to find your generated file. Either copy
your generated file to /usr/lib/python2.4/site-packages/pysnmp/v4/smi/mibs/instances
or call setMibPath on the mibBuilder instance before calling loadModules
to add the current directory (or whatever directory holds your generated
file).

 

[Guest]

The pysnmp library is not able to find your generated file. Either copy
your generated file to /usr/lib/python2.4/site-packages/pysnmp/v4/smi/mibs/instances
or call setMibPath on the mibBuilder instance before calling loadModules
to add the current directory (or whatever directory holds your generated
file).

The thing is that I have copied the file (as you may see, I did 'ls
-lA' on it. If the file wasnt there, the error message was different.
Also, the setMibPath doesent seem to work, as I tried to set up it to
any value, and right after that I was performing getMibPath which was
giving me unchanged default paths. Keep in mind, that whole path setu
up code has executed without any error.
So, what is correct and working way to supply my code with that
converted mib file?

 

[rdmurray]

The thing is that I have copied the file (as you may see, I did 'ls
-lA' on it. If the file wasnt there, the error message was different.
Also, the setMibPath doesent seem to work, as I tried to set up it to
any value, and right after that I was performing getMibPath which was
giving me unchanged default paths. Keep in mind, that whole path setu
up code has executed without any error.
So, what is correct and working way to supply my code with that
converted mib file?

I have absolutely no knowledge of pysnmp, but from reading the error
message I'd guess that you have a '.py' somewhere where you shouldn't.
Either the filename shouldn't have a .py, or you are referring to
the thing to be loaded with a '.py' on the end of the name when you
should be omitting it.

But like I said, I'm speaking out of my hat here, since I've never
worked with pysnmp.

--RDM

 

[Guest]

I have absolutely no knowledge of pysnmp, but from reading the error
message I'd guess that you have a '.py' somewhere where you shouldn't.
Either the filename shouldn't have a .py, or you are referring to
the thing to be loaded with a '.py' on the end of the name when you
should be omitting it.

But like I said, I'm speaking out of my hat here, since I've never
worked with pysnmp.

--RDM

All modules in mentioned by pysnmp directory have .py in name, and
while invoked in the code, they dont. But I also tried some
combinations, with no luck.

 

[Shantanu Joshi]

.. snip

The thing is that I have copied the file (as you may see, I did 'ls
-lA' on it. If the file wasnt there, the error message was different.
Also, the setMibPath doesent seem to work, as I tried to set up it to
any value, and right after that I was performing getMibPath which was
giving me unchanged default paths. Keep in mind, that whole path setu
up code has executed without any error.
So, what is correct and working way to supply my code with that
converted mib file?

Works for me.

[shantanu@tiamat:~/Documents/snmp]$ ls
AV-AES-MIB.mib
[shantanu@tiamat:~/Documents/snmp]$ smidump AV-AES-MIB.mib -k > AV-AES-MIB.txt
smidump: module `AV-AES-MIB.mib' contains errors, expect flawed output
[shantanu@tiamat:~/Documents/snmp]$ build-pysnmp-mib AV-AES-MIB.txt > AV-AES-MIB.py
[shantanu@tiamat:~/Documents/snmp]$ ls
AV-AES-MIB.mib AV-AES-MIB.txt AV-AES-MIB.py
[shantanu@tiamat:~/Documents/snmp]$ sudo cp AV-AES.py /usr/lib/python2.5/site-packages/pysnmp/v4/smi/mibs/instances
[shantanu@tiamat:~/Documents/snmp]$ ls /usr/lib/python2.5/site-packages/pysnmp/v4/smi/mibs/instances
AV-AES-MIB.py __SNMP-FRAMEWORK-MIB.py __SNMP-MPD-MIB.pyc __SNMP-USER-BASED-SM-MIB.py __SNMP-VIEW-BASED-ACM-MIB.pyc __init__.py
__PYSNMP-USM-MIB.py __SNMP-FRAMEWORK-MIB.pyc __SNMP-TARGET-MIB.py __SNMP-USER-BASED-SM-MIB.pyc __SNMPv2-MIB.py __init__.pyc
__PYSNMP-USM-MIB.pyc __SNMP-MPD-MIB.py __SNMP-TARGET-MIB.pyc __SNMP-VIEW-BASED-ACM-MIB.py __SNMPv2-MIB.pyc
[shantanu@tiamat:~/Documents/snmp]$
[shantanu@tiamat:~/Documents/snmp]$ ipython
Python 2.5.2 (r252:60911, Sep 30 2008, 15:41:38)
Type "copyright", "credits" or "license" for more information.

IPython 0.8.4 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object'. ?object also works, ?? prints more.

In [1]: from pysnmp.smi import builder, view

In [2]: mibBuilder = builder.MibBuilder().loadModules('AV-AES-MIB')

In [3]: mibViewController = view.MibViewController(mibBuilder)

In [4]: oid, label, suffix = mibViewController.getNodeName((1,3,6,1,4,1,6889,2,27,2,2,2))

In [5]: print oid
(1, 3, 6, 1, 4, 1, 6889, 2, 27, 2, 2)

In [6]: print label
('iso', 'org', 'dod', 'internet', 'private', 'enterprises', [...])

In [7]: print suffix
(2,)

In [8]:

I think you should check that the file you are generating is correct,
and can be read properly. If that doesn't help, you should try on the
pysnmp-users mailing list at http://sourceforge.net/mail/?group_id=14735.