Network 204 Assignment 4

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NETW204: Assignment 4, Link-state Routing and OSPF (50 points)

Fill in the blanks below with either the term defined or the definition for the terms listed. Each answer is worth 2 points each, 25 questions X 2 = 50 total points. Type answers in the appropriate cell; text will automatically wrap. Post your completed assignment to the dropbox.

NAME | Chad White |

| Term | Definition | 1 | ABR | Attaches to multiple areas, maintains separatelink-state databases for each area it is connectedto, and routes traffic destined for or arriving fromother areas | 2 | Autonomous System Boundary Router (ASBR) | Routers that have at least one interface attached to an external internetwork (another autonomous system [AS]), such as a non-OSPF network. ASBRs can import non- OSPF network information to the OSPF network and vice versa; this process is called route redistribution. | 3 | Backup Designated Router (BDR) | Used to provide redundancy in broadcast networks which are utilizing the OSPF | 4 | DBD | Contains an abbreviated list of the sendingrouter’s link-state database and is used by receiving routers to check against the local link-state database | 5 | Designated Router (DR) | A router that informs end nodes of the existence and identity of other routers. | 6 | DRothers | Routers that are not a dr or bdr. they are the routers in the ospf network. | 7 | Flapping link | A link which cycles between up and down. | 8 | Highest active IP | Router ID for an OSPF router if no loopbacks are configured? | 9 | link-state acknowledgment (LSAck) | To make the flooding of link state advertisements reliable, flooded advertisements are explicitly acknowledged | 10 | link-state advertisements (LSA) | Used to send routing information about itself, or to receive routing information from neighbors. This information is used to build the link-state database. |…...

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