[mrtg] IP Changes on WAN - But keep exisitng data

Naveen Sivenandan Naveen.Sivenandan at BTGroup.co.za
Tue Aug 20 08:44:06 MEST 2002

I am monitoring a network with about 20 Cisco routers. We have data from
January this year.There has been a request to change all the IP addresses on
all devices to a private addresse scheme.I need to keep the history for the
routers, How do I keep the devices from not losing the history after they
are cut over to the new ip adresses.
Eg: Exisiting ip is 193.0.5.x 
      New ip is to be changed to 10.0.5.x
Exisiting config script - 
### Interface 1 >> Descr: 'Ethernet0' | Name: 'Et0' | Ip: '' |
Eth: '00-04-dd-6d-e0-0b' ###
Target[]: @ <mailto:1:bm-pub at> 
SetEnv[]: MRTG_INT_IP="" MRTG_INT_DESCR="Ethernet0"
MaxBytes[]: 1250000
Title[]: Traffic Analysis for 1 -- Bman-ABC
PageTop[]: <H1>Traffic Analysis for 1 -- Bman-ABC</H1>
   <TR><TD>System:</TD>     <TD>Bman-ABC in </TD></TR>
   <TR><TD>Maintainer:</TD> <TD></TD></TR>
   <TR><TD>Description:</TD><TD>Ethernet0 connected to ABC </TD></TR>
   <TR><TD>ifType:</TD>     <TD>ethernetCsmacd (6)</TD></TR>
   <TR><TD>ifName:</TD>     <TD>Et0</TD></TR>
   <TR><TD>Max Speed:</TD>  <TD>1250.0 kBytes/s</TD></TR>
   <TR><TD>Ip:</TD>         <TD> ()</TD></TR>

### Interface 2 >> Descr: 'Serial0' | Name: 'Se0' | Ip: '' | Eth: '' ###
Target[]: @ <mailto:2:bm-pub at> 
SetEnv[]: MRTG_INT_IP="" MRTG_INT_DESCR="Serial0"
MaxBytes[]: 193000
Title[]: Traffic Analysis for 2 -- Bman-ABC
PageTop[]: <H1>Traffic Analysis for 2 -- Bman-ABC</H1>
   <TR><TD>System:</TD>     <TD>Bman-ABC in </TD></TR>
   <TR><TD>Maintainer:</TD> <TD></TD></TR>
   <TR><TD>Description:</TD><TD>Serial0  </TD></TR>
   <TR><TD>ifType:</TD>     <TD>frame-relay (32)</TD></TR>
   <TR><TD>ifName:</TD>     <TD>Se0</TD></TR>
   <TR><TD>Max Speed:</TD>  <TD>193.0 kBytes/s</TD></TR>

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