Thanks for your help, Adam. I know about Dell’s snmp shortcomings. At one point I found a bug in one of their switches that had to do with them using a signed int instead of unsigned int for their counters. Really threw MRTG for a loop.

Anyway, I knew MRTG used to work with these switches, but I was dumb and decided to upgrade them to the “latest” firmware (6.1.2). That’s what broke it. I’ve downgraded back to 6.0.4, and the switches are returning ifDescr values again.

-- Dan

From: observium [mailto:observium-bounces@observium.org] On Behalf Of Adam Armstrong
Sent: Thursday, October 23, 2014 16:35
To: Observium Network Observation System
Subject: Re: [Observium] Ports not found on older PowerConnect switches

This device isn't returning an ifDescr or an ifName for its ports, which is invalid.

Typical Dell. There isn't really a workaround for this.

adam.

------ Original Message ------

From: "Dan Ratzlaff" <dratzlaff@mhceck.org>

To: "Observium Network Observation System" <observium@observium.org>

Sent: 10/23/2014 4:21:51 PM

Subject: Re: [Observium] Ports not found on older PowerConnect switches

Debug output attached.

Thanks!

-- Dan

-----Original Message-----

From: observium [mailto:observium-bounces@observium.org] On Behalf Of

Adam Armstrong

Sent: Thursday, October 23, 2014 16:04

To: Observium Network Observation System

Subject: Re: [Observium] Ports not found on older PowerConnect switches

All of the ports seem to be being ignored :

> Ports : XXXXXXXXXXXXXXXXXXXXXXXXXX

Run the ports poller in debug :

./poller.php -h 29 -m ports -d

adam.

On 2014-10-23 15:45, Dan Ratzlaff wrote:

> Hello. I'm having trouble getting Observium (CE 0.14.4.5229) to

> recognize ports on my Dell PowerConnect 3048 and 3024 switches.

>

> It appears these switches only support SNMP v1. Observium connects

> and grabs SNMP contact, location, etc. but doesn't see ports. Here's

> output from add and discovery for my 3024 switch:

> -----

> # ./add_device.php switch-ne

> Observium v0.14.4.5229

> Add Device(s)

>

> Try to add switch-ne:

> Trying v2c community public ...

> No reply on community public using v2c.

> Could not reach switch-ne with given SNMP community using v2c.

> Trying v1 community public ...

> Now discovering switch-ne (id = 29)

> switch-ne 29 powerconnect

> Ports : XXXXXXXXXXXXXXXXXXXXXXXXXX

> Discovered in 0.498 seconds

>

> switch-ne 29 powerconnect

> IPv4 Addresses :

> Discovered in 0.092 seconds

>

> switch-ne 29 powerconnect

> IPv6 Addresses :

> Discovered in 0.189 seconds

>

> Added device switch-ne (29).

>

> Devices added: 1.

>

> -----

> # ./discovery.php -h 29

> Observium v0.14.4.5229

> Discovery

>

> switch-ne 29 powerconnect

> OLD: powerconnect, NEW: powerconnect ---

> Ports : XXXXXXXXXXXXXXXXXXXXXXXXXX

> Port Stacks:

> Processors : Dell-Vendor-MIB hrDevice:

> Memory : Dell-Vendor-MIB HOST-RESOURCES-MIB

> IPv4 Addresses :

> IPv6 Addresses :

> Sensors: FASTPATH-BOXSERVICES-PRIVATE-MIB + Dell-Vendor-MIB

> Storage :

> Inventory: Physical Inventory :

> hrDevice :

> Discovery protocols: LLDP-MIB CISCO-CDP-MIB

> OSPF Neighbours:

> ARP/NDP Tables :

> BGP Sessions: No BGP on host

> VLANs:

> Q-BRIDGE-MIB

> UCD Disk IO :

> Discovered in 2.012 seconds

>

> Current Revision : 5229

> New Revision : 5909

>

> MySQL: Cell[2/0s] Row[19/0.01s] Rows[33/0.02s] Column[0/0s]

> Update[1/0s] Insert[5/0.02s] Delete[0/0s]

>

> -----

>

> I can do a snmpwalk on these switches from the same machine that

> Observium is running on and can see all the interface information. Is

> there something I need to tweak in Observium to get these switches

> discovered correctly?

>

> Thanks!

>

> -- Dan

> _______________________________________________

> observium mailing list

> observium@observium.org

> http://postman.memetic.org/cgi-bin/mailman/listinfo/observium

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