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CCNA 3
CHAPTER 3
12
Other
Undergraduate 2
07/25/2007

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Term
backbone
Definition
The part of a network that a that acts as the primary path for traffic that is most often sourced from, and destined for, other netwroks.
Term
BDR
Definition
Backup designated router-
Term
DR
Definition
designated router- The designated router enables a reduction in the number of adjacencies required on a multiaccess network, which reduces the amount of routing protocol traffic and the topological database's size.
Term
flooding
Definition
Process that sends information out all ports, wth the exception of the port on which the information was received.
Term
Hello protocol
Definition
Protocol used by OSPF systems to establish and maintain neighbors.
Term
loopback
Definition
A special IP number designated for a machine's software loopback interface. The loopback interface has no hardware associated with it and is not physically connected to a network.
Term
LSA
Definition
Link-state adverstisement. Broadcast packet used by link-state protocols that contains information about neighbors and path costs. Receiving routers use LSAs to maintain their routing tables.
Term
multiaccess network
Definition
Network that allows multiple devices to connect and communicate simultaneously.
Term
point-to-point
Definition
communication between one receiver and one location.
Term
process ID
Definition
Process identifier. A numerical number assigned during the OSPF configuartion process that identifies eash OSPF process running on a router.
Term
router ID
Definition
Router Identifier. Ip address that identifies a router participating in OSPF. The router ID is taken from the active interface with the highest IP address, or from a configured loopback interface.
Term
sniffer
Definition
A program and device that monitors data traveing over a network.
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