MRTG and Multihomed NIC

[Khemara Lyn]

Hello All,

 

I multihome my NIC on FC4 box to have about 10 IPs. Could I set up MRTG to
monitor by those IPs rather than just a single IP or NIC?

 

Thanks,

Khem

[Anthony Joseph Messina]

Khemera Lin wrote:
>  Hello All,
>  
>   
>  
>  I multihome my NIC on FC4 box to have about 10 IPs. Could I set up MRTG 
>  to monitor by those IPs rather than just a single IP or NIC?
>  
>   
>  
>  Thanks,
>  
>  Khem
>   
add ifref=ip to your cfgmaker line. mrtg tries to collect info on all 
ips it finds using snmp.  you'll need snmpd configured by using 
/etc/snmp/snmpd.conf.

-- 
My Website: http://messinet.com
My Online Gallery: 
http://messinet.com/modules.php?name=Web_Links&l_op=visit&lid=3

[Khemara Lyn]

Thanks for your response, Anthony. Yes, that is what I use. And here is the
output:

# /usr/bin/cfgmaker --global "WorkDir: /var/www/mrtg/fw" --global
"YTics[_]:
8" --global "Options[_]: growright,bits" --ifref=ip public@localhost

########
...
...
--snpo: confcache public@localhost: Ip N.N.N.1 --> 5
--snpo: confcache public@localhost: Ip N.N.N.9 --> 5
--snpo: confcache public@localhost: Ip N.N.N.17 --> 5
--snpo: confcache public@localhost: Ip N.N.N.25 --> 5
--snpo: confcache public@localhost: Ip N.N.N.33 --> 5
...
...
########

I have 5 different network interfaces and the fifth one is multihomed to
have multiple IPs on it. As shown above, the cfgmaker could detect all of
the IPs (masked with N.N.N.), but the mrtg.cfg would not have separate
entries for those IPs; it only treats all of them as one single
IP/interface.

Any more ideas please?

Thanks,
Khem

-----Original Message-----
From: fedora-list-bounces(a)redhat.com [mailto:[e-mail]]
On Behalf Of Anthony Messina
Sent: Friday, March 03, 2006 4:29 PM
To: For users of Fedora Core releases
Subject: Re: MRTG and Multihomed NIC

Khemera Lin wrote:
>  Hello All,
>  
>   
>  
>  I multihome my NIC on FC4 box to have about 10 IPs. Could I set up MRTG 
>  to monitor by those IPs rather than just a single IP or NIC?
>  
>   
>  
>  Thanks,
>  
>  Khem
>   
add ifref=ip to your cfgmaker line. mrtg tries to collect info on all 
ips it finds using snmp.  you'll need snmpd configured by using 
/etc/snmp/snmpd.conf.

-- 
My Website: http://messinet.com
My Online Gallery: 
http://messinet.com/modules.php?name=Web_Links&l_op=visit&lid=3

-- 
fedora-list mailing list
fedora-list(a)redhat.com
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list

[Anthony Joseph Messina]

Khemera Lin wrote:
>  Thanks for your response, Anthony. Yes, that is what I use. And here
> is the
>  output:
>  
>  # /usr/bin/cfgmaker --global "WorkDir: /var/www/mrtg/fw" --global
> "YTics[_]:
>  8" --global "Options[_]: growright,bits" --ifref=ip public@localhost
>  
>  ########
>  ...
>  ...
>  --snpo: confcache public@localhost: Ip N.N.N.1 --> 5
>  --snpo: confcache public@localhost: Ip N.N.N.9 --> 5
>  --snpo: confcache public@localhost: Ip N.N.N.17 --> 5
>  --snpo: confcache public@localhost: Ip N.N.N.25 --> 5
>  --snpo: confcache public@localhost: Ip N.N.N.33 --> 5
>  ...
>  ...
>  ########
>  
>  I have 5 different network interfaces and the fifth one is multihomed to
>  have multiple IPs on it. As shown above, the cfgmaker could detect all of
>  the IPs (masked with N.N.N.), but the mrtg.cfg would not have separate
>  entries for those IPs; it only treats all of them as one single
>  IP/interface.
>  
>  Any more ideas please?
>  
>  Thanks,
>  Khem
>  
>  -----Original Message-----
>  From: fedora-list-bounces(a)redhat.com [mailto:[e-mail]]
>  On Behalf Of Anthony Messina
>  Sent: Friday, March 03, 2006 4:29 PM
>  To: For users of Fedora Core releases
>  Subject: Re: MRTG and Multihomed NIC
>  
>  Khemera Lin wrote:
>  
> >Hello All,
> >
> > 
> >
> >I multihome my NIC on FC4 box to have about 10 IPs. Could I set up MRTG 
> >to monitor by those IPs rather than just a single IP or NIC?
> >
> > 
> >
> >Thanks,
> >
> >Khem
> >
>  
>  
>  add ifref=ip to your cfgmaker line. mrtg tries to collect info on all 
>  ips it finds using snmp.  you'll need snmpd configured by using 
>  /etc/snmp/snmpd.conf. 
ah, i see.  i apologize, for when you initially said you "multihome," i 
assumed you were not using device aliases.  i am not certain if mrtg 
will be able to split out device alias information as i am not sure if 
the kernel tracks only by real device.

try:

~#] snmpwalk -v 2c -c public localhost|more

and find out more about your device(s) and aliases.

as an aside, why do you need so many ip addresses (from your above 
description) on the same subnet?

-- 
My Website: http://messinet.com
My Online Gallery: 
http://messinet.com/modules.php?name=Web_Links&l_op=visit&lid=3

[Khemara Lyn]

Still the same. Anyway, thank you for the help, Anthony. Those IPs are on
different subnets, which are assigned to different sections in our office
here as we have FC4 box as the gateway. 

I have not gone through full details of net-snmp. But, before I go on with
it, could someone let me know if net-snmp has support for interfaces
aliases? 

Thanks,
Khem

>  -----Original Message-----
>  From: fedora-list-bounces(a)redhat.com [mailto:fedora-list-
>  bounces(a)redhat.com] On Behalf Of Anthony Messina
>  Sent: Saturday, March 04, 2006 6:11 PM
>  To: For users of Fedora Core releases
>  Subject: Re: MRTG and Multihomed NIC
>  
>  Khemera Lin wrote:
>  > Thanks for your response, Anthony. Yes, that is what I use. And here is
>  the
>  > output:
>  >
>  > # /usr/bin/cfgmaker --global "WorkDir: /var/www/mrtg/fw" --global
>  "YTics[_]:
>  > 8" --global "Options[_]: growright,bits" --ifref=ip public@localhost
>  >
>  > ########
>  > ...
>  > ...
>  > --snpo: confcache public@localhost: Ip N.N.N.1 --> 5
>  > --snpo: confcache public@localhost: Ip N.N.N.9 --> 5
>  > --snpo: confcache public@localhost: Ip N.N.N.17 --> 5
>  > --snpo: confcache public@localhost: Ip N.N.N.25 --> 5
>  > --snpo: confcache public@localhost: Ip N.N.N.33 --> 5
>  > ...
>  > ...
>  > ########
>  >
>  > I have 5 different network interfaces and the fifth one is multihomed to
>  > have multiple IPs on it. As shown above, the cfgmaker could detect all
>  of
>  > the IPs (masked with N.N.N.), but the mrtg.cfg would not have separate
>  > entries for those IPs; it only treats all of them as one single
>  > IP/interface.
>  >
>  > Any more ideas please?
>  >
>  > Thanks,
>  > Khem
>  >
>  > -----Original Message-----
>  > From: fedora-list-bounces(a)redhat.com [mailto:fedora-list-
>  bounces(a)redhat.com]
>  > On Behalf Of Anthony Messina
>  > Sent: Friday, March 03, 2006 4:29 PM
>  > To: For users of Fedora Core releases
>  > Subject: Re: MRTG and Multihomed NIC
>  >
>  > Khemera Lin wrote:
>  >
>  >>Hello All,
>  >>
>  >>
>  >>
>  >>I multihome my NIC on FC4 box to have about 10 IPs. Could I set up MRTG
>  >>to monitor by those IPs rather than just a single IP or NIC?
>  >>
>  >>
>  >>
>  >>Thanks,
>  >>
>  >>Khem
>  >>
>  >
>  >
>  > add ifref=ip to your cfgmaker line. mrtg tries to collect info on all
>  > ips it finds using snmp.  you'll need snmpd configured by using
>  > /etc/snmp/snmpd.conf.
>  
>  ah, i see.  i apologize, for when you initially said you "multihome," i
>  assumed you were not using device aliases.  i am not certain if mrtg
>  will be able to split out device alias information as i am not sure if
>  the kernel tracks only by real device.
>  
>  try:
>  
>  ~#] snmpwalk -v 2c -c public localhost|more
>  
>  and find out more about your device(s) and aliases.
>  
>  as an aside, why do you need so many ip addresses (from your above
>  description) on the same subnet?
>  
>  --
>  My Website: http://messinet.com
>  My Online Gallery:
>  http://messinet.com/modules.php?name=Web_Links&l_op=visit&lid=3
>  
>  --
>  fedora-list mailing list
>  fedora-list(a)redhat.com
>  To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list