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NeDi Software Specific => Discovery => Topic started by: MPell on April 13, 2018, 09:31:36 am

Title: Problem getting correct PoE Infos of Cisco Switches
Post by: MPell on April 13, 2018, 09:31:36 am: Dear NeDi-Community,

first of all "thank you" for this awesome Monitoring Tool. It fits the raltion between nedds, complexity and speed in a impressive way.

I've scanned some Cisco-Switches and most of it looks fine, except the PoE Infos. Although I can see PoE Consumption Values through the Test in the def-files they are not collected while scanning with nedi.pl. I've looked trough the Forum but can't get the right hint, so I hope you can help me though.

I have for example a Cisco Switch Type WS-C2960S-24PS-L and WS-C3560CX-12PC-S. The corresponding interface part in the def-file is the same. Only the POWER-ETHERNET-MIB Option is "PEM->" for the C3560 and "Cisco Stack-MIB" for the S2960S.

# Interfaces
StartX
EndX
IFname   1.3.6.1.2.1.31.1.1.1.1
IFaddr   old
IFalia    1.3.6.1.2.1.31.1.1.1.18
IFalix
InBcast   1.3.6.1.2.1.31.1.1.1.3
InDisc   1.3.6.1.2.1.2.2.1.13
OutDisc   1.3.6.1.2.1.2.2.1.19
IFvlan   1.3.6.1.4.1.9.9.68.1.2.2.1.2
IFvlix
IFpowr   1.3.6.1.4.1.9.9.402.1.2.1.9
IFpwix   1.3.6.1.4.1.9.5.1.4.1.1.11
IFdupl   1.3.6.1.2.1.10.7.2.1.19
IFduix
Halfdp   2
Fulldp   3

If I tested the OID through the defgen Page and it looks fine; I can see PoE Consumption Values (chekced through ssh-session on the switch). But a scan with nedi.pl -v -a <IP-Address> shows in the interface section no PoE Values. So there are no PoE Values to show up in the interface column of the device-status page of the C2960S-Switch. The C3560CX Switch doesn't even have a PoE Column for the interfaces in device status page.

I've lso tried both mentioned options (disprot and ifmib) in nedi.conf for tracking of PoE Infos. Now I have nomore idea where too look after. Can you help me in this matter?

thanks in advance
Title: Re: Problem getting correct PoE Infos of Cisco Switches
Post by: rickli on April 19, 2018, 08:53:09 pm: Have a look at usepoe in nedi.conf. The discovery protocol can provide reliable information, but you can set it to ifmib for device types, where it doesn't...
Title: Re: Problem getting correct PoE Infos of Cisco Switches
Post by: MPell on April 20, 2018, 09:38:26 am: Thank you for your response. I thougt i've tried already with ifmib and disprot option... but it must have been a Newbie-mistake. Tried again and now it works wiht the ifmib option (must have done something wrong I can't reproduce). Also to show up the PoE-Values of the Cisco WS-C3560CX-12PC-S Switches I finally changed the POWER-ETHERNET-MIB Option in the def file to "IF-Name2Index" and the column and the PoE values show up now.

Thx

My DEF-File for Cisco Switchtype WS-C3560CX-12PC-S now looks like:

Code: [Select]
# Definition for 1.3.6.1.4.1.9.1.2134 created by Defgen 2.0 on 20.Apr 2018 (admin) # Main SNMPv 2HC Type WS-C3560CX-12PC-S Typoid Sysdes OS IOS Icon w3bp Size 1 TempAlert Bridge VLX ArpND phy Dispro CDP|LLDP Serial 1.3.6.1.4.1.9.5.1.2.19.0 Bimage 1.3.6.1.4.1.9.2.1.73.0 CfgChg 1.3.6.1.4.1.9.9.43.1.1.1.0 CfgWrt 1.3.6.1.4.1.9.9.43.1.1.3.0 FTPConf VLnams 1.3.6.1.4.1.9.9.46.1.3.1.1.4.1 VLnamx Group 1.3.6.1.4.1.9.9.46.1.2.1.1.2.1 Mode 1.3.6.1.4.1.9.9.46.1.2.1.1.3.1 # Interfaces StartX EndX IFname 1.3.6.1.2.1.31.1.1.1.1 IFaddr old IFalia 1.3.6.1.2.1.31.1.1.1.18 IFalix InBcast 1.3.6.1.2.1.31.1.1.1.3 InDisc 1.3.6.1.2.1.2.2.1.13 OutDisc 1.3.6.1.2.1.2.2.1.19 IFvlan 1.3.6.1.4.1.9.9.68.1.2.2.1.2 IFvlix IFpowr 1.3.6.1.4.1.9.9.402.1.2.1.9 N IFpwix 1.3.6.1.4.1.9.5.1.4.1.1.11 IFdupl 1.3.6.1.2.1.10.7.2.1.19 IFduix Halfdp 2 Fulldp 3 # Modules Modesc 1.3.6.1.2.1.47.1.1.1.1.2 Moclas 1.3.6.1.2.1.47.1.1.1.1.5 Movalu 3|10 Moslot 1.3.6.1.2.1.47.1.1.1.1.7 Modhw 1.3.6.1.2.1.47.1.1.1.1.8 Modsw 1.3.6.1.2.1.47.1.1.1.1.10 Modfw 1.3.6.1.2.1.47.1.1.1.1.9 Modser 1.3.6.1.2.1.47.1.1.1.1.11 Momodl 1.3.6.1.2.1.47.1.1.1.1.13 Modloc 1.3.6.1.4.1.9.9.402.1.2.1.9 Mostat Mostok # RRD Graphing CPUutl 1.3.6.1.4.1.9.9.109.1.1.1.1.8.1 Temp 1.3.6.1.4.1.9.9.13.1.3.1.3.1004 MemCPU 1.3.6.1.4.1.9.9.48.1.1.1.6.1 Custom Mem IO;G;Bytes free 1.3.6.1.4.1.9.9.48.1.1.1.6.2
Title: Re: Problem getting correct PoE Infos of Cisco Switches
Post by: swepart on April 22, 2018, 11:45:53 pm: I still have problem with POE on this switch model

what IOS version are you on,, I have c3560cx-universalk9-mz.152-4.E2.bin

My nedi.conf
# Set policy how poe delivery should be tracked per device type,
# or default for all (comment to ignore PoE completely):
# disprot use the discovery protocol
# ifmib get real value from the interfaces
# usepoe default disprot
ifmib

and I am using this OID for POE in combination with IF-Name2index
1.3.6.1.4.1.9.9.402.1.2.1.9

I am using 1.3.6.1.4.1.9.5.1.4.1.1.11 for poe index
Title: Re: Problem getting correct PoE Infos of Cisco Switches
Post by: MPell on April 23, 2018, 01:00:34 pm: Hi swepart,

I use the folowing settings in nedi.conf

Code: [Select]
# Set policy how poe delivery should be tracked per device type, # or default for all (comment to ignore PoE completely): # disprot use the discovery protocol # ifmib get real value from the interfaces usepoe default ifmib
I think after the "usepoe" you have to define what method NeDi should use for gathering PoE Infos. Here you can say: as "default" use "ifmib" (or "disprot").
I defined it as default, because I had the problem with all of my Cisco-PoE capabel Switches. To define the ifmib-method only for several Switchdevices (by Type), it may work for you, if you define a special Line for your Cisco-Switchtype (as I understand for now):

Code: [Select]
usepoe default disprot usepoe WS-C3560CX-12PC-S ifmib
Good luck.

PS: My switch is on IOS c3560cx-universalk9-mz.152-4.E2.bin as yours
Title: Re: Problem getting correct PoE Infos of Cisco Switches
Post by: swepart on April 23, 2018, 10:37:44 pm: I got it work now, but i had to change OID.
This OID 1.3.6.1.4.1.9.9.402.1.2.1.9 give me wrong values, to low (check with 'show power inline' )

1.3.6.1.4.1.9.9.402.1.2.1.7 gives me same values as 'show power inline' command
Title: Re: Problem getting correct PoE Infos of Cisco Switches
Post by: MPell on April 24, 2018, 03:46:10 pm: That would be the OID that shows the value from commandline "show power inline", that's right.

But OID .7 gives only the allocated amount of power of the PD-Device.
With OID .9 you get the actual Power consumption.

You can have a look at CISCO-POWER-ETHERNET-EXT -MIB for further infos.

I think you can use the CLI "show power inline <interface> detail" for that. Here's an example output:

Code: [Select]
SWITCH#show power inline gi0/1 detail Interface: Gi0/1 Inline Power Mode: auto Operational status: on Device Detected: yes Device Type: Ieee PD IEEE Class: 2 Discovery mechanism used/configured: Unknown Police: off Power Allocated Admin Value: 30.0 Power drawn from the source: 7.0 Power available to the device: 7.0 Actual consumption Measured at the port: 4.5 Maximum Power drawn by the device since powered on: 4.7 Absent Counter: 0 Over Current Counter: 0 Short Current Counter: 0 Invalid Signature Counter: 0 Power Denied Counter: 0 Power Negotiation Used: None LLDP Power Negotiation --Sent to PD-- --Rcvd from PD-- Power Type: - - Power Source: - - Power Priority: - - Requested Power(W): - - Allocated Power(W): - - Four-Pair PoE Supported: No Spare Pair Power Enabled: No Four-Pair PD Architecture: N/A
So it depends on what value you like to get.

Greets
Title: Re: Problem getting correct PoE Infos of Cisco Switches
Post by: swepart on April 24, 2018, 09:47:24 pm: I agree, OID ending with 7 will give allocated power, 9 will give actual consumption.. I really dont know what one to use
If you want to be on safe side you might want to use 7, if you want to actual usage,, well then 9 is best

We might ask for some development/enhancement here. Maybe Nedi should report both usage and Allocated

Use Alloc
6500/15400

Nowadays we only use POE switches and so does our customers so I think having knowledge of POE usage and allocated is something that is needed