SNMP Device & Interface Filtering - Statseeker Documentation

Index

Overview
Filtering using SNMP SysDescr Rules
Filtering using Interface Types
List of Interface Types

Overview

SNMP Device & interface filtering is one of the methods that can be employed to:

Better target and/or speed up the Discovery process
Manage the device/interface list with regard to licensing limits
Exclude devices or interfaces that are not needed due to duplication or devices with SNMP communication issues

Filtering using SNMP SysDescr Rules

Statseeker’s SysDescr Rules are a list of hardware vendor identifiers that are used to filter the targets of a Discovery process.

During Discovery Statseeker will:

Query the device for its SysDescr
Compare the response to the SysDescr Rules and if Statseeker:
- Finds an include rule relating to the device, it will continue with the SNMP walk
- Finds an exclude rule relating to the device, it will stop the SNMP walk for that device
- Finds no rule relating to the device, it will stop the SNMP walk for that device

By default, Statseeker provides a pre-populated list with include rules assigned to major vendors, you can easily tailor this list to suit your needs. New rules may be added, one per line in the format:

include/exclude [one or more spaces] vendor-name (see image above as a reference)

When excluding devices, it is recommended that you both, remove the include rule, and add an exclude rule, that way you have a record of the decision.

Note: entries can be commented out by prefixing the line with a # (hash) symbol.

You may find devices where the Vendor name is not reported in the SysDescr. In this instance, use any unique text (case sensitive) found in the SysDescr as the vendor-name. An SNMP walk can be performed to view the SysDescr of a given device:

Select Administration Tool > Expert Tools > SNMP Walk
Specify the IP Address and credentials for the device
- Select from the Credentials list for an existing SNMP Credential configuration, see SNMP Credentials for details
- Alternatively, specify new credentials:
  - SNMPv1/2 – community string
  - SNMPV3 – Authentication, privacy, and context
Click SNMPWalk

The walk process will begin, and the results displayed. In addition, the option for downloading an archive of the results is available at the bottom of the results.

Search the results for the string sysDescr, this is generally the first OID listed in the results

The SysDescr value is the last element in the row (bold section in the example below).
E.g. 1481849797 10.116.252.35 2 public 1.3.6.1.2.1.1.1.0 SNMPv2-MIB.sysDescr.0 OCTET-STRING Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500-IPBASEK9-M), Version 12.2(31)SGA, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2006 by Cisco Systems, Inc. Compiled Fri 08-Sep-06 10:19 by cc

Once a rule has been set/modified, the associated devices will be included/excluded on the next SNMP discovery.

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Filtering using Interface Types

Statseeker Interface Types refers to a list of interface types (ethernetCsmacd, frameRelay, gigabitEthernet, etc.) that Statseeker will monitor. Statseeker pre-populates this list with the most common interface types:

An interface will be ignored by Statseeker if its ifType is either not present, or present but commented out (prefixed with #).

To edit the list:

Select Administration Tool > Network Discovery > Interface Types
Add, remove, and comment out interface types as required
Click Save

Note: entries can be commented out by prefixing the line with a # (hash) symbol.

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You can perform an SNMP walk to view the interface type (ifType) found on a given device, to do this:

Select Administration Tool > Expert Tools > SNMP Walk
Specify the IP Address and credentials for the device
- Select from the Credentials list for an existing SNMP Credential configuration, see SNMP Credentials for details
- Alternatively, specify new credentials:
  - SNMPv1/2 – community string
  - SNMPV3 – Authentication, privacy, and context
Click SNMPWalk

The walk process will begin, and the results displayed. In addition, the option for downloading an archive of the results is available at the bottom of the results.

Search the results for the string ifType

The ifType is the last element in the result row (bold section in the example).
E.g. 1481850240 10.116.252.35 2 public 1.3.6.1.2.1.2.2.1.3.2 IF-MIB.ifType.2 ENUM ethernetCsmacd

List of Interface Types

a12MppSwitch
aal2
aal5
actelisMetaLOOP
adsl
adsl2
adsl2plus
aflane8023
aflane8025
arap
arcnet
arcnetPlus
async
atm
atmbond
atmDxi
atmFuni
atmIma
atmLogical
atmRadio
atmSubInterface
atmVciEndPt
atmVirtual
aviciOpticalEther
basicISDN
bgppolicyaccounting
bridge
bsc
cblVectaStar
cctEmul
ces
channel
ciscoISLvlan
cnr
coffee
compositeLink
dcn
ddnX25
digitalPowerline
digitalWrapperOverheadChannel
dlsw
docsCableDownstream
docsCableMaclayer
docsCableMCmtsDownstream
docsCableUpstream
docsCableUpstreamChannel
ds0
ds0Bundle
ds1
ds1FDL
ds3
dtm
dvbAsiIn
dvbAsiOut
dvbRccDownstream
dvbRccMacLayer
dvbRccUpstream
e1
econet
eon
eplrs
escon
ethernet3Mbit
ethernetCsmacd
fast
fastEther
fastEtherFX
fcipLink
fddi
fibreChannel
frameRelay
frameRelayInterconnect
frameRelayMPI
frameRelayService
frDlciEndPt
frf16MfrBundle
frForward
g703at2mb
g703at64k
gfp
gigabitEthernet
gr303IDT
gr303RDT
gtp
h323Gatekeeper
h323Proxy
hdh1822
hdlc
hdsl2
hiperlan2
hippi
hippiInterface
homepna
hostPad
hssi
hyperchannel
ibm370parChan
idsl
ieee1394
ieee80211
ieee80212
ieee80216WMAN
ieee8023adLag
if-gsn
imt
infiniband
interleave
ip
ipForward
ipOverAtm
ipOverCdlc
ipOverClaw
ipSwitch
isdn
isdns
isdnu
iso88022llc
iso88023Csmacd
iso88024TokenBus
iso88025CRFPInt
iso88025Dtr
iso88025Fiber
iso88025TokenRing
iso88026Man
isup
l2vlan
l3ipvlan
l3ipxvlan
lapb
lapd
lapf
linegroup
lmp
localTalk
macSecControlledIF
macSecUncontrolledIF
mediaMailOverIp
mfSigLink
miox25
mocaVersion1
modem
mpc
mpegTransport
mpls
mplsTunnel
msdsl
mvl
myrinet
nfas
nsip
opticalChannel
opticalChannelGroup
opticalTransport
other
para
pdnEtherLoop1
pdnEtherLoop2
plc
pon155
pon622
pos
ppp
pppMultilinkBundle
primaryISDN
propAtm
propBWAp2Mp
propCnls
propDocsWirelessDownstream
propDocsWirelessMaclayer
propDocsWirelessUpstream
propMultiplexor
propPointToPointSerial
propVirtual
propWirelessP2P
proteon10Mbit
proteon80Mbit
q2931
qam
qllc
radioMAC
radsl
reachDSL
regular1822
rfc1483
rfc877x25
rpr
rs232
rsrb
sdlc
sdsl
shdsl
sip
sipSig
sipTg
sixToFour
slip
smdsDxi
smdsIcip
softwareLoopback
sonet
sonetOverheadChannel
sonetPath
sonetVT
srp
ss7SigLink
stackToStack
starLan
tdlc
teLink
termPad
tr008
trasnpHdlc
tunnel
ultra
usb
v11
v35
v36
v37
vdsl
virtualIpAddress
virtualTg
voiceDID
voiceEM
voiceEMFGD
voiceEncap
voiceFGDEANA
voiceFGDOS
voiceFXO
voiceFXS
voiceOverAtm
voiceOverCable
voiceOverFrameRelay
voiceOverIp
x213
x25huntGroup
x25mlp
x25ple