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1-4 Getting to Know Your Contivity 221
Dynamic DNS Support
With Dynamic DNS (Domain Name System) support, you can have a static
hostname alias for a dynamic IP address, allowing the host to be more easily
accessible from various locations on the Internet. You must register for this service
with a Dynamic DNS service provider.
IP Multicast
Deliver IP packets to a specific group of hosts using IP multicast. IGMP (Internet
Group Management Protocol) is the protocol used to support multicast groups. The
latest version is version 2 (see RFC 2236); the Contivity 221 supports both
versions 1 and 2.
IP Alias
IP Alias allows you to partition a physical network into logical networks over the
same Ethernet interface. The Contivity 221 supports three logical LAN interfaces
via its single physical Ethernet LAN interface with the Contivity 221 itself as the
gateway for each LAN network.
Central Network Management
Central Network Management (CNM) allows an enterprise or service provider
network administrator to manage your Contivity 221. The enterprise or service
provider network administrator can configure your Contivity 221, perform
firmware upgrades and do troubleshooting for you.
SNMP
SNMP (Simple Network Management Protocol) is a protocol used for exchanging
management information between network devices. SNMP is a member of the
TCP/IP protocol suite. Your Contivity 221 supports SNMP agent functionality,
which allows a manager station to manage and monitor the Contivity 221 through
the network. The Contivity 221 supports SNMP version one (SNMPv1).
Network Address Translation (NAT)
NAT (Network Address Translation - NAT, RFC 1631) allows the translation of
multiple IP addresses used within one network to different IP addresses known
within another network.
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