11-21-2006 06:24 AM
Hello! I have a large network for monitoring by CiscoWorks and great amount of alerts is killing me. How to reduce number of Unresponsive alerts? DFM finds, that InterfaceOperStatus is UP and InterfaceAdminStatus is UP, but IPStatus is TIMEDOUT. As I think this happens because some interfaces of network nodes are unreachable by ICMP (there is no routing from DFM to those interfaces), but I only need to know up or down status of interfaces, not the ip connectivity. May be it is possible to disable some kind of polling, ICMP for example?
11-21-2006 09:16 AM
Unfortunately, ICMP polling cannot be disabled in DFM 2.0 as it could in DFM 1.2. See CSCsb48643 for more details. However, if you open a TAC Service Request, a script can be provided to you that will allow you to get around this limitation. Reference the above bug in your SR.
11-21-2006 10:44 PM
This script talks about putting interfaces to unmanaged state.
Normaly this means the interface is no longer monitored. What we want however is that it is no longer pinged but still monitored for being up.
Can you provide some more info on what it actually does?
The "smarts" people in my organisation say if DFM can't ping it won't manage.
Cheers,
Michel
11-21-2006 11:51 PM
The script sets the managed state of the IP address to UNMANAGED. The device itself will still be managed, and all other events will still be processed by DFM. You will just not receive Unreachable events for those IP addresses.
11-22-2006 12:59 AM
Thanks. And yet another question. What script do you mean? Is it placed in Detailed Device View, and can change managed state of interface to "false" or "true"? If IP address in UNMANAGED state, will DFM alert when some interface go to DOWN state?
11-22-2006 05:09 AM
When you place an interface in unmanaged in the detailed device view it is no longer monitored via ICMP and SNMP.
Whatever happens no alerts are raised for that interfaces.
Cheers,
Michel
11-22-2006 05:56 AM
Yeah, I've test this ability of DDV today and got such answer, but what script was discussed above?
11-22-2006 09:24 AM
I said the IP address is unmanaged, not the interface. The interface is still managed. The IP address, however, will not be pinged.
11-22-2006 10:15 PM
When I test it, I choose "false" in DDV for interface. Then state of Unresponsive event became Cleared, and then this event disappeared. But when I switch interface in DOWN state there was no alert about it in DFM. Why?
11-22-2006 10:22 PM
If you unmanage the INTERFACE, then you will lose all events for that interface. If you open a Service Request with the TAC and reference the bug I mentioned in my original reply, they can provide you a script that will unmanage the IP address only. This will effectively disable the ICMP polling of the unreachable interfaces while keeping the underlying INTERFACE in a managed state.
11-22-2006 11:20 PM
OK. Thank you.
11-28-2006 12:18 PM
Do you think that would ever become a feature rather then a TAC case ?
As we use a lot of firewall`s between segments we have this issue quite a lot.
11-28-2006 12:28 PM
Yes, DFM 3.0 will have a fix for this.
11-29-2006 05:15 AM
When is DFM 3.0 scheduled to ship?
12-14-2007 12:50 AM
where is finally the feature in DFM 3.0 ? I am experiencing the exact same problem. Thanks.
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