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G L O S S A R Y Intel® NetStructure™ 7190 Multi-Site Traffic Director User Guide
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Aliasing The act of trying to appear as a legitimate packet from a trusted or
expected source even though the packet actually originated at some
unknown source.
SSL (Secure Socket
Layer)
Protocol developed by Netscape for encrypted transmission over
TCP/IP networks, setting up a secure end-to-end link.
TCP/IP Transmission Control Protocol (TCP) utilizing IP as the base
transport.
TTL DNS Time To Live.
UDP/IP User Datagram Protocol (UDP) utilizing the IP as the base transport.
It is an unreliable, but fast transport mechanism. It is used by DNS.
VIP A virtual IP address of a site. It may be the actual IP address of a non-
brokered server. At a brokered site a VIP is used to group resources.
The VIP address is mapped to the resources IP addresses. A Broker
balances VIP network traffic across its resources.
Weighted Random This algorithm resolves IP address randomly, rather than serially,
while weighting works as in Weighted Round Robin. The benefit of
this algorithm is that it is more effective at normalizing, or leveling,
load than Weighted Round Robin.
Weighted Round Robin This algorithm is an enhancement of legacy Round Robin DNS,
under which IP addresses are returned serially from the server’s list
of addresses. The differences between Round Robin DNS and
Weighted Round Robin are site status awareness and weighting.
Weighting allows site operators to skew loading on a percentage
basis. For example, Site A might be weighted to receive 12.5% of the
traffic, site B 25 % and site C 62.5%.