Toby, I think that it is important to list what type of interface and how it is connected to the remote site. It is possible for a frame relay link to drop a connection but your local interface would still think that it is up. This is not a WhatsUp Gold issue but a router issue. Knowing what type of connection would help determine how this might have occurred.
On our network I use interface monitoring quite a bit but this is for Cisco switches. I check for the snmp value of ifOperStatus and make sure that it equals 1. If this value changes to 0 then I know the interface is down and send an alert after 3 missed polls. You may want to do an snmp walk and see if the value of ifOperStatus changes. If this doesn't work then perhaps you can check for an snmp trap if the route changes (if you are running some routing protocol over this link). Regards, Todd Wiese -----Original Message----- From: Toby Rodwell [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 26, 2002 4:07 AM To: '[EMAIL PROTECTED]' Subject: [WhatsUp Forum] Missed polls I have only recently started using WhatsUp Gold (7.01) for my network of approximately 20 routers. Currently it is configured for fairly basic up/down monitoring and alerting, polling with ICMP, monitoring a few Services (predominantly Interfaces) and receiving SNMP traps from a few select devices. The frequency of monitoring is as per the defaults. To date I find that I'm getting lots of Up/Down and Service Up/Down, missed 1, log entries. Though this fills up the log, it does not overly concern me, partly because I know I can if I wish increase the poll timeout to reduce the number of such entries but mainly because I make my alert triggers much less sensitive such that they are only generated when there is a high likelihood of a real outage. However, this morning there was a power outage in a remote site which caused most of the routers there to drop out for 25 minutes. Whilst I can't blame these routers for not reporting their state (in that they were off!) I was surprised to see that the upstream router, which did not lose power, completely failed to register a loss of service for its interfaces connected to the downed routers. In fact, the only record I had of the problem at all was from the Syslog entries of the routers. In light of the above, I'd be grateful for any information or suggestions about the following: 1. How does service monitoring work with regards to Interfaces? 2. What may have caused such an obvious outage to be missed, and how can I prevent it happening again? All advice gratefully received! Toby -- NOTICE: The information contained in this electronic mail transmission is intended by Convergys Corporation for the use of the named individual or entity to which it is directed and may contain information that is privileged or otherwise confidential. If you have received this electronic mail transmission in error, please delete it from your system without copying or forwarding it, and notify the sender of the error by reply email or by telephone (collect), so that the sender's address records can be corrected. Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/whatsup_forum%40list.ipswitch.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/whatsup_forum%40list.ipswitch.com/
