Dynamix UM-A User Manual page 145

Proxy : A device that closes a straight connection from an outside network (WAN) to an inside
network (LAN). All transmissions must go through the proxy to get into or out of the LAN. This makes
the internal addresses of the devices in the LAN private.
PVC : Permanent Virtual Circuit: A software defined logical connection in a network; A Virtual
Circuit that is permanently available to the user.
RIP : Routing Information Protocol: A management protocol that ensures that all hosts in a particular
network share the same information about routing paths. In a RIP, a host computer will send its entire
routing table to another host computer every X seconds, where X is the supply interval. The receiving
host computer will in turn repeat the same process by sending the same information to another host
computer. The process is repeated until all host computers in a given network share the same routing
knowledge.
RIPv1 : RIP Version 1: One of the first dynamic routing protocols introduced used in the internet,
RIPv1 was developed to distribute network reach ability information for what is now considered simple
topologies.
RIPv2 : RIP Version 2: Shares the same basic concepts and algorithms as RIPv1 with added features
such as subnet masks, authentication, external route tags, next hop addresses, and multicasting in
addition to broadcasting.
Router Mode : Router Mode is used when there is more than one PC connected to the LAN-side
Ethernet and/or USB port. This enables the ADSL WAN access to be shared with multiple nodes on the
LAN. Network Address Translation (NAT) is supported so that one WAN-side IP address can be
shared among multiple LAN-side devices. DHCP is used to serve each LAN-side device and IP
address.
SNAP : SubNetwork Attachment Point.
SNMP : Simple Network Management Protocol: Used to govern network management and monitor
devices on the network. SNMP is formally described in RFC 1157.
SNR : Signal-to-Noise Ratio: Measured in decibels, SNR is a calculated ratio of signal strength to
background noise. The higher this ratio, the better the signal quality.
Subnet Mask : Short for SUBNETwork Mask, subnet mask is a technique used by the IP protocol to
filter messages into a particular network segment, called a subnet. The subnet mask consists of a binary
pattern that is stored in the client computer, server, or router. This pattern is compared with the
incoming IP address to determine whether to accept or reject the packet.
TCP : Transfer Control Protocol: Works together with Internet Protocol for sending data between
computers over the Internet. TCP keeps track of the packets, making sure that they are routed
efficiently.
TFTP : Trivial File Transfer Protocol: A simple version of FTP protocol that has no password
authentication or directory structure capability.
Trellis Code : An advanced method of FEC (Forward Error Correction). When enabled, it makes for
better error checking at the cost of slower packet transmission. Setting Trellis Code to Disabled will
cause increased packet transmission with decreased error correction.
TTL : Time To Live: A value in an IP packet that indicates whether or not the packet has been
propagating through the network too long and should be discarded.
UBR : Unspecified Bit Rate: A transfer mode that is usually used in file transfers, email, etc. UBR can
vary depending on the data type.
4/1 Port ADSL Router P 144