How to resolve "Active,Couldn't classify" error while Discovering Network Devices ?

[Akshatha3]

Hi People!!

I am new to ServiceNow. Please help me with the below query.

What are all the Pre-requisites needed to Discover Network Devices - Switches and Routers apart from SNMP community string and port 161. When I tried Discovering Couple of Network Devices IP's, I am getting "Active,Couldn't classify" error.

Thanks in Advance!!

Regards,

Akshatha

[robertgeen]

More then likely the SNMP endpoints need to white list the MID server being used to discover them. Outside of what you outlined here that would be the only other thing (many network devices have a list of IPs that can run SNMP discovery on them and only they will get a response from it when making an SNMP request. Thanks.

[Ashutosh Munot1]

Hi,

Most important is Access Control list on those Network devices and firewall rules.

Thanks,
Ashutosh

[Aquib1]

Hi Akshatha,

You can try with SSH Command.

UNIX and Linux commands requiring root privileges Command Platform.
SSH commands must run with root privileges, either with root credentials or through the use of sudo.

Option 1:

SNMP V1/V2, User Type: Read Only Community String

Option 2: SNMP V3, User Type: SNMP V3 SNMP user name / authentication key.

Note: Sudo commands do not work with private key credentials, because there is no password to supply to the sudo command.

A solution is to add the NOPASSWD option to the sudo configuration.
For example, you might enter: disco ALL=(root)NOPASSWD:/usr/sbin/dmidecode,/usr/sbin/lsof,/sbin/ifconfig.

Here the user name :disco

Access Requirements for Non-Root Credentials
Application	File or Directory	Access Required
Apache	httpd.conf	Read
Hbase	hbase-site.xml	Read
JBoss	jboss-service.xml	Read
JBoss	JBoss home directory	Read
JBoss	web.xml	Read
MySQL	my.cnf	Read
NGINX	nginx.conf	Read
Oracle	oratab	Read
Oracle	Associated (s) pfiles	Read
Oracle Listenerlsnrctl	lsnrctl	Read
Oracle Listenerlsnrctl	istener.ora	Read
Tomcat	catalina.jar	Read
Tomcat	server.xml	Read
Tomcat	web.xml	Read
Unix	/etc/*release	Read
Unix	/etc/bashrc	Read
Unix	/etc/profile	Read
Unix	/proc/cpuinfo	Read
Unix	/proc/vmware/sched/ncpus	Read
Unix	/var/log/dmesg	Read
Unix	APD directory	Read
WebSphere	cell.xml	Read
WebSphere	server.xml	Read
WebSphere	serverindex.xml	Read

These are the possible scenario. Please verify and let me know if it does not work than we need to check the 
the paths for the commands match the paths on the system.

Regards,

Aquib

[Akshatha3]

Hi Aquib,

Thanks for the Suggestion.

But we are not allowed to try SSH on n/w devices in our environment. Only SMNP is allowed, so I am using behavior functionality to discover them.

Regards,

Akshatha