[mrtg] Re: Max Speed on Cisco

[Alex Nguyen]

Hi,

To know the interface speed, MRTG poll the mib ifSpeed. The default
interface speed = ifSpeed, but if you've modified the speed with bandwidth
command, the ifSpeed is also modified.

In the case of the PVCs, I'm not sure there are PVC's ifSpeed in the
ifTable.

A.

An example of dot1q subinterfaces :

[#] snmpwalk router ifName | more
...
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.6 : DISPLAY STRING- (ascii):  Gi1/0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.13 : DISPLAY STRING- (ascii):  Gi1/0.1035
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.14 : DISPLAY STRING- (ascii):  Gi1/0.1036
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.15 : DISPLAY STRING- (ascii):  Gi1/0.1037
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.16 : DISPLAY STRING- (ascii):  Gi1/0.1038
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.17 : DISPLAY STRING- (ascii):  Gi1/0.1022

[#] snmpwalk router ifSpeed | more
...
interfaces.ifTable.ifEntry.ifSpeed.6 : Gauge32: 1000000000
interfaces.ifTable.ifEntry.ifSpeed.13 : Gauge32: 100000000
interfaces.ifTable.ifEntry.ifSpeed.14 : Gauge32: 1000000000
interfaces.ifTable.ifEntry.ifSpeed.15 : Gauge32: 100000000
interfaces.ifTable.ifEntry.ifSpeed.16 : Gauge32: 100000000
interfaces.ifTable.ifEntry.ifSpeed.17 : Gauge32: 100000000


On Fri, 4 Oct 2002, dbrett wrote:

d> Date: Fri, 04 Oct 2002 17:48:34 -0400 (EDT)
d> From: dbrett <dbrett at tcn.net>
d> To: Alex Ponnath <alexp at iccinternet.com>
d> Cc: Alex Nguyen <anguyen at videotron.net>, mrtg at list.ee.ethz.ch
d> Subject: Re: [mrtg] Re: Max Speed on Cisco
d> 
d> Unfortunately mrtg uses the interface speed not the bandwidth.  The work
d> around to this is to modify the configuration file directly with speed you
d> would like reported.
d> 
d> david
d> 
d> On Fri, 4 Oct 2002, Alex Ponnath wrote:
d> 
d> > 
d> > I tried that but it seems the system ignores the bandwith setting
d> > In the cisco config....
d> > 
d> > -----Original Message-----
d> > From: Alex Nguyen [mailto:anguyen at videotron.net] 
d> > Sent: Friday, October 04, 2002 1:13 PM
d> > To: Alex Ponnath
d> > Cc: mrtg at list.ee.ethz.ch
d> > Subject: Re: [mrtg] Max Speed on Cisco
d> > 
d> > 
d> > Hi,
d> > 
d> > I don't know if you have the option "bandwidth" on your PVC as the
d> > 802.1Q subinterface. The bandwidth option correspond to the ifSpeed's
d> > value that MRTG use.
d> > 
d> > A.
d> > 
d> > On Fri, 4 Oct 2002, Alex Ponnath wrote:
d> > 
d> > AP> Date: Fri, 04 Oct 2002 12:44:15 -0700
d> > AP> From: Alex Ponnath <alexp at iccinternet.com>
d> > AP> To: mrtg at list.ee.ethz.ch
d> > AP> Subject: [mrtg] Max Speed on Cisco
d> > AP> 
d> > AP> Hi,
d> > AP>  
d> > AP> i was looking in the archives with no look to see if there is a 
d> > AP> solution for my problem. I am terminating T-1's on a CBX 500 which 
d> > AP> then terminates the PVC's of a customer
d> > AP> on OC-3 or DS-3 trunks on a cisco. I dont have a problem graphing
d> > them,
d> > AP> but i have 
d> > AP> a problem with the max speed. Since the loop to customer is a T-1
d> > and
d> > AP> terminates 
d> > AP> on OC-3 cfgmaker detects the OC-3 speed at 155 MB which is correct
d> > but i
d> > AP> would like
d> > AP> to actualy tell mrtg that this PVC's max speed is only 1.5 MB
d> > AP>  
d> > AP> So my question is there any setting in a cisco config or something 
d> > AP> else, which allows me to define this max speed to 1.5 MB. Editing 
d> > AP> the file on daily basis is not realy an
d> > AP> option since there is well over 1000 lines we monitor
d> > AP>  
d> > AP> thanks
d> > AP>  
d> > AP> Alex
d> > AP> 
d> > AP> --
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d> > AP> 
d> > 
d> > --
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d> > 
d> 

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