Ping Sweep (as a starting point)

You have two choices for Auto-Discovery starting points. Use either or both to best advantage in your network

environment:

Discovery Seeds

You designate specific hostnames (not case-sensitive) or IP addresses where Auto-Discovery starts gathering

neighbor information.

Ping Sweep

NNMi issues ICMP pings to certain addresses gathered from neighbor information.

Note: Ping Sweep works only with IPv4 addresses.

Ping Sweep sends ICMP ping commands to IP addresses in the ranges defined in your Auto-Discovery

rules. Ping Sweep enforces the following limits to the ICMP pings:

For each specific IP address range, NNMi issues pings across a maximum of the last two octets in the IPv4

address range. This is equivalent to a /16 subnet

ICMP pings are limited to 500 at one time. This avoids flooding your network or tripping spam detection tools.

When used with Auto-Discovery, Ping Sweep uses the responding IP address as a hint for additional

discovery.

Tip: If Ping Sweep is used with a broadcast IP address, only the first responding IP address is used a hint for

additional discovery.

See "Configure Auto-Discovery Rules" for more information about Auto-Discovery Rules.

Ping Sweep is useful in wide area networks such as ATM, Frame Relay, and Point-to-Point that do not contain an

Address Resolution Protocol (ARP) cache.

You configure the Ping Sweep feature at two levels:

"Configure Ping Sweep Global Settings"

"IP Address Ranges for Auto-Discovery" (Ping Sweep configuration for each rule)

For details about how Spiral Discovery works: See Also

Send documentation feedback to HP.

© 2008–2011 Hewlett-Packard Development Company, L.P.

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