[mrtg] MIB query (re HP/Nortel Blade switches )...

Hazell Derek dhazell at aap.com.au
Tue Feb 3 00:10:39 CET 2009

Hi Scott

I tried the ifdesc-alias option within cfgmaker, but it made little or
no difference - the Description field in the cfgmaker output still comes
up empty.


Seems to me though it is firstly a problem in the setup of the HP/Nortel
GbE2c blade switch. As I mentioned before an snmpwalk against the blade
switch returns info but no port description data. Actually the snmpwalk
command also returns an error (I don't know if that error is significant
- perhaps the missing description data is not being returned because of
this error(?)) (see below).


So I suspect I need to do something in the blade switch so that snmpwalk
will return the description data. Once snmpwalk can see that data then
perhaps mrtg cfgmaker will see the descriptions as well ...







$ snmpwalk -v2c -commstring bs11.xx.yyy

SNMPv2-MIB::sysDescr.0 = STRING: GbE2c Ethernet Blade Switch for HP
c-Class BladeSystem

SNMPv2-MIB::sysObjectID.0 = OID:

DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (2364917000) 273 days,

SNMPv2-MIB::sysContact.0 = STRING:

SNMPv2-MIB::sysName.0 = STRING: BS11.XX.YYY

SNMPv2-MIB::sysLocation.0 = STRING:

SNMPv2-MIB::sysServices.0 = INTEGER: 6

IF-MIB::ifNumber.0 = INTEGER: 280

IF-MIB::ifIndex.1 = INTEGER: 1

IF-MIB::ifIndex.257 = INTEGER: 257

IF-MIB::ifIndex.258 = INTEGER: 258




IF-MIB::ifInOctets.1 = Counter32: 2727786347

IF-MIB::ifInOctets.257 = Counter32: 142588718

IF-MIB::ifInOctets.258 = Counter32: 1280817

IF-MIB::ifInOctets.259 = Counter32: 0




IF-MIB::ifOutOctets.1 = Counter32: 1559593044

IF-MIB::ifOutOctets.257 = Counter32: 3928445505

IF-MIB::ifOutOctets.258 = Counter32: 272537458

IF-MIB::ifOutOctets.259 = Counter32: 262899569




Error: OID not increasing: RFC1213-MIB::ipRouteDest.

 >= RFC1213-MIB::ipRouteDest.




-----Original Message-----
From: mrtg-bounces at lists.oetiker.ch
[mailto:mrtg-bounces at lists.oetiker.ch] On Behalf Of Scott Ocken
Sent: Tuesday, 3 February 2009 2:37 AM
To: mrtg at lists.oetiker.ch
Subject: Re: [mrtg] MIB query (re HP/Nortel Blade switches )...



For the Nortel 8600 switch you want to use --ifdesc=alias in cfgmaker.

Alias seems to work for most Nortel switches.  In the past I hacked in  

an alias2 for the 4500 series, but after upgrading MRTG I lost that,  

and I don't think it was needed after that anyway.


Hope that helps with the Nortel Switches.  Let me know if you have any  

other Nortel switch issues as that is the only switch we use here.




Quoting "Mersberger, Robert" <robert.mersberger at goldenliving.com>:


> I will be watching this post because I am in the same situation.  I   

> did some research some time ago but final settled on what I could   

> get.   I would also like better descriptions for the interfaces but   

> I can work with what HP/Nortel provide.


> ________________________________

> From: mrtg-bounces at lists.oetiker.ch   

> [mailto:mrtg-bounces at lists.oetiker.ch] On Behalf Of Steve Shipway

> Sent: Sunday, February 01, 2009 6:21 PM

> To: 'Hazell Derek'; 'mrtg at lists.oetiker.ch'

> Subject: Re: [mrtg] MIB query (re HP/Nortel Blade switches )...


> Possibly, on the Nortel switch, the port descriptions are stored in   

> a different vendor-specific area (cisco do this, but cfgmaker has   

> specific support for the cisco description).  In this case, you'd   

> need to write your own interface template to extract and use them.


> Another possibility is that a weird auth rule on the switch is   

> blanking out this specific community from viewing the specified   

> OIDs, but this is less likely.


> Steve



> ________________________________

> From: mrtg-bounces at lists.oetiker.ch   

> [mailto:mrtg-bounces at lists.oetiker.ch] On Behalf Of Hazell Derek



> By the way, regarding my query about the HP/Nortel blade switches I   

> should have mentioned, when I run snmpwalk against the HP blade   

> switch, that the snmpwalk response is missing the description data,   

> while a similar snmpwalk query against a cisco switch does return   

> the port description data.


> So it seems to me that I must do something to the blade switch to   

> make the description data accessible. It also seems to me that I   

> might need to also do something to the mrtg server to make it return  

>  this description data. Appreciate any guidance.





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