What about the tool we use: CloudView NMS www.cloudviewnms.com . It can monitor pretty much anything plugged into your network or public Internet, including special GUI for Cisco devices.  Network Monitoring: view of your whole network topology, swit...

We use CloudView NMS for this purpose  http://www.cloudviewnms.com. It shows all our network.  You can configure your e-mail when interface goes down.

We use CloudView NMS http://www.cloudviewnms.com  . It supports collecting sysLog messages, SNMP traps (all versions of SNMP and many other standards (TL1, SMTP, ...) .  They discovered our network, so now we also use them as inventory tool, put in ...