ZyXEL Communications MGS3600-24F User Manual page 368

F M A A
RONT ATTER PPENDIX
IP
IP (Internet Protocol) is provides a logical IP addressing scheme for hosts and routes packets between them via the network layer. IP enables
packets to cross interconnected networks so these networks appear as a single logical network at the network or IP layer. Each device directly
connected to the Internet must have a unique IP address. IP is a best-effort system, which means that no packet is assured to reach its destination
in the same condition it was sent.
IPv4 (IP version 4) uses 32 bits to represent over four billion unique addresses. IPv4 addresses are becoming depleted because of the increasing
number of devices directly connected to the Internet and because they were allocated in blocks, the bulk of which remain unused. IPv6 (IP version
38
6) solves this problem by providing the same service using 128 bits to represent over 3 x 10 addresses. However, IPv4 is still the protocol of
choice for most of the Internet.
IPMC
IPMC means IP Multicast.
IP Source Guard
IP Source Guard is used to prevent attackers from spoofing their IP addresses by dropping packets that don't have source IP addresses allocated
via DHCP or configured manually in the DHCP Snooping table.
MGS3600-24F/XGS3600-26F/XGS3600-28F A-10 U ' G
SER S UIDE