Suggested agents for a layer 3 discovery

The recommended agents for a layer 3 discovery depends on your network.

When running a layer 3 discovery, the following agents should be run:

  • Details and AssocAddress
  • A combination of the following IP layer agents:
    • IpRoutingTable
    • IpBackupRoutes
    • IpRoutingTable and IpForwardingTable
  • HSRP
  • VRRP
  • TraceRoute (if firewalls are present)
  • IPv4/6 InetRouting. If you have IPv6 in your network, consider running this agent to discover the connectivity, particularly the IPv6 connectivity.
Tip: Some routers support layer 2 technologies. For example, when an ATM card is located in a router chassis, layer 3 discovery agents, such as the IpRoutingTable agent, only discover interfaces with an IP address. Therefore, to fully discover all the interfaces on routers that support layer 2 technologies, you must run the appropriate agents.