10Gig Interface MaxBytes with Cfg

That I guess is my problem... with an SNMP walk I get
this...

IF-MIB::ifSpeed.1 = Gauge32: 4294967295

I am walking a Cisco 7609. That is whats reported for all
10G and higher
(port channels) links. I am using 64bit counters in MRTG (I
think...
x.x.x.x:::::2)

That is also the MaxBytes that is put into MRTG... so
apparently it's an
issue with the wrong reported information. 

Scott Geba
Comcast - Eastern Division
200 Cresson Blvd
Oaks, PA 19456
Desk - 610.650.1195
Cell - 267.716.5585
 

-----Original Message-----
From: Volk,Gregory B [mailto:greg.volkedwardjones.com] 
Sent: Friday, July 14, 2006 11:08 AM
To: Geba, Scott; mrtglist.ee.ethz.ch
Subject: RE: [mrtg] 10Gig Interface MaxBytes with Cfg

> 
> Is there any way to have the 
> correct MaxBytes associated to them automatically
without 
> having to go in and replace them in the cfg? 
> Quite a few of my 
> routers have port channels with 3 10GigE links in them,
is 
> there a way to automate MaxBytes on these, or is find
and 
> replace my friend? Thanks in advance! 
> 


Cfgmaker should be getting this information from the ifSpeed
variable
and automatically populating each target's MaxBytes
directive. What
happens when you snmpwalk the interface table? Is the switch
responding
back with the wrong information for ifSpeed?

Here's an example of a 4Gig portchannel (instance #19) from
one of my
systems:


> ./snmpwalk -M ../mibs myrouter public interfaces | grep
"19"

interfaces.ifTable.ifEntry.ifIndex.19 = 19

interfaces.ifTable.ifEntry.ifDescr.19 = Port-channel1

interfaces.ifTable.ifEntry.ifType.19 = propVirtual(53)

interfaces.ifTable.ifEntry.ifMtu.19 = 1500

interfaces.ifTable.ifEntry.ifSpeed.19 = Gauge: 4000000000


Notice the last line is the number which cfgmaker uses for
Maxbytes.
This snmpwalk was from a cisco 6509 running 12.1(22)E1. I
have had
trouble with cisco 72xx's misreporting ifSpeed for ATM
interfaces, and
Marconi ATM switches are occasionally bad about ifspeed on
OC-12
interfaces.

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On 7/14/06, Geba, Scott <Scott_Gebacable.comcast.com>
wrote:
> That I guess is my problem... with an SNMP walk I get
this...
>
> IF-MIB::ifSpeed.1 = Gauge32: 4294967295
>
> I am walking a Cisco 7609. That is whats reported for
all 10G and higher
> (port channels) links. I am using 64bit counters in
MRTG (I think...
> x.x.x.x:::::2)
>
> That is also the MaxBytes that is put into MRTG... so
apparently it's an
> issue with the wrong reported information.

I didn't see this mentioned so I'm going to ask.

Do you have the bandwidth statement set on the interfaces or
are you
relying on IOS to determine that?  I've not run into a
problem when I
specify the bandwidth on the interface.

Paul

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