Discover the topology of the network. If the deployment includes a single IP Availability Manager on a large or extra large platform, discover the network in limited portions: for example, discover groups of one thousand managed network devices. Monitor the discovery process and review the discovered topology after each discovery.
If the network includes Hot Standby Router Protocol (HSRP) groups or virtual routers, ensure that they are discovered.
For IP Availability Manager and Performance Manager, validate the discovered topology by reviewing a segment of the network that is well known. Always confirm possible discovery errors: if an expected device does not appear in the topology, ping the device to ensure that it is accessible. It is not unusual for discovery to find more devices than you expect; if this is the case, confirm that the devices exist.