Routers with no sysDescr

williamm · Post by **williamm** » Mon Feb 21, 2005 8:07 am

Hi

I am trying to get SNMP data from a system (STAROS router) with no sysDescr defined. Here is what I get with "snmpwalk system" from this router:

# snmpwalk -v1 -c public 10.0.0.1 system
SNMPv2-MIB::sysUpTime.0 = Timeticks: (31224272) 3 days, 14:44:02.72
SNMPv2-MIB::sysContact.0 = STRING: Not Configured
SNMPv2-MIB::sysName.0 = STRING: router
SNMPv2-MIB::sysLocation.0 = STRING: Not Configured

It seems that Cacti consider a host is down if it don´t have sysDescr and if this host is detected down, it´s not polled. I can´t change also the Downed Host Detection to UDP Ping since some of routers don´t work with it.

Is there any way to get this device polled via SNMP even with no sysDescr defined?

Post by **rony** » Mon Feb 21, 2005 8:38 am

Can you set a Sys Description?

williamm · Post by **williamm** » Mon Feb 21, 2005 8:53 am

No I can´t. This is a Wireless Operating System/Router (www.staros.com) so manufacturer does not define System Description and SNMP is not configurable to put this manually.

gninja · Post by **gninja** » Tue Feb 22, 2005 1:58 pm

Do you have a box that runs snmpd that you can proxy through?

http://www.net-snmp.org/docs/man/snmpd.conf.html

Unless you want to hack apart the code, that's your best bet. Proxy the oids you need. If they overlap with oids on the proxy host that you need, map then to new oids, or alternately run a second snmpd on a different port.

wireless · Post by **wireless** » Tue Mar 01, 2005 5:14 am

We've just gone through this issue on our fbsd box.

Anything after 8.6 (8.6a>)will break the snmp polling to star-os boxes.

Make the mistake of allowing portupgrade to do it thing. It upgraded cacti to 8.6.c which broke the snmp polling. Tried upgrading to 6d but no joy.

Ended up toasting the mysql DB and starting from scratch with 8.6 and this were things will stay until I hear this issue is resolved

.

Post by **TheWitness** » Tue Mar 01, 2005 6:01 am

You can change the item for snmp availability to SysUptime by changing the OID in ping.php around line number 194, you will find the following:

".1.3.6.1.2.1.1.1.0"

You need to change it to:

".1.3.6.1.2.1.1.3.0"

This should fix things up. I will likely make this change moving forward as SysUptime is more common.

To make this change in cactid is about the same, just look for the text above, change it and re=make.

TheWitness

Post by **rony** » Mon Mar 07, 2005 12:56 pm

I have "Stickied" this post, because it is becoming more apparent that more and more people are having problems with this issue.

Post by **TheWitness** » Sat Mar 12, 2005 5:31 pm

There is a patch to 0.8.6c that utilizes sysUptime instead of sysDesc for future reference. A update for cactid will be available soon.

TheWitness

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Routers with no sysDescr

Routers with no sysDescr

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