With Internet Group Management Protocol (IGMP) snooping, Layer 2 devices also can make intelligent multicast forwarding decisions by examining the contents of each frameâs Layer 3 IP header. Consider the example of a heterogeneous Layer 2 and Layer 3 network that does not use IGMP snooping.ith Internet Group Management Protocol (IGMP) snooping, Layer 2 devices also can make intelligent multicast forwarding decisions by examining the contents of each frameâs Layer 3 IP header. Consider the example of a heterogeneous Layer 2 and Layer 3 network that does not use IGMP snooping.
â¢ Volatile substances have a tendency to vaporize whereas nonvolatile substances do not have a tendency to vaporize. â¢ Volatile substances have a high vapor pressure at normal room temperature and pressure. Nonvolatile substances do not have a high vapor pressure in these conditions.
1. a chemical element lacking typical metallic properties. Familiarity information: NONMETAL used as a noun is very rare. â¢ NONMETAL (adjective). The adjective NONMETAL has 1 sense: 1. not containing or resembling or characteristic of a metal. Familiarity information: NONMETAL used as an adjective is very rare.amiliarity information: NONMETAL used as a noun is very rare. â¢ NONMETAL (adjective). The adjective NONMETAL has 1 sense: 1. not containing or resembling or characteristic of a metal. Familiarity information: NONMETAL used as an adjective is very rare.