Proactive monitoring of IP SLA with SNMP

Hello Guys,

I hope you can help me with this. Here we have routers with two internet
access (DMVPN Network), one is the principal and the other one is the back up.

We have set up the router in this way :

track 1 interface Dialer1 ip routing
ip route 0.0.0.0 0.0.0.0 Dialer1 track 1
ip route 0.0.0.0 0.0.0.0 Vlan2 dhcp 100

PE0001#CA0269#sh ip int brief | ex down
Interface IP-Address OK? Method Status
Protocol
Dialer1 <Public IP1> YES IPCP up
up
FastEthernet0 unassigned YES unset up up
FastEthernet1 unassigned YES unset up up
FastEthernet2 unassigned YES unset up up
FastEthernet3 unassigned YES unset up up
FastEthernet4 unassigned YES NVRAM up up
Tunnel10 172.xx.117.69 YES NVRAM up up
Tunnel20 172.yy.117.69 YES NVRAM up up
Virtual-Access1 unassigned YES unset up up
Vlan1 10.1xy.69.1 YES NVRAM up up
Vlan2 <Public IP2> YES DHCP up
up
PE0001#

PE0001#sh inventory
NAME: "881", DESCR: "881 chassis.

So, if dialer 1 get into a issue, default gateway move to be the secondary
line. As soon as "track 1" senses that dialer is in a issue, it will show us a
message :

%TRACKING-5-STATE: 1 interface Di1 ip routing Up->Down

My question is, how can I make that snmp take care of this message ? I want to
respond to issues at the first sign of a problem, I mean when primary internet
line is down. It would be very good that a Open Source solution (CACTI or
Nagios ) could send me one email and show one alarm in monitor tab.

But I do not know yet, how can I get the MIB for "track" feature on Cisco IOS.
If I guess that If I am able to get the MIB for track command I would be able
to monitor my cisco router when the primary line is down.

Thanks a lot for your time,

Regards

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Received on Wed May 12 2010 - 10:34:05 ART