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Netw204: Assignment 4, Link State Routing And Ospf

539 words - 3 pages

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 | |

| Term | Definition |
1 | OSPF- Open Shortest Path First | 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) | The OSPF router located between an OSPF autonomous system network and a non-OSPF network. ASBRs run both OSPF and another routing protocol, such as RIP. ASBRs must reside in a non-stub OSPF area. |
3 | ...view middle of the document...

|
6 | DRothers | Routers that are not a DR or BDR. They are the other routers in the OSPF network. |
7 | Flapping link | Routing problem where an advertised route between two nodes alternates (flaps) back and forth between two paths because of a network problem that causes intermittent interface failures. |
8 | Highest active IP | Router ID for an OSPF router if no loopbacks are configured? |
9 | link-state acknowledgment (LSAck) | Acknowledges receipt of LSA (link-state advertisement) packets. |
10 | link-state advertisements (LSA) | Broadcast packet used by link-state protocols that contains information about neighbors and path costs. |
11 | LSR- Link-state request | Asks for more information about any entry in the DBD |
12 | link-state update (LSU) | A link-state update packet carries a collection of link-state advertisements one hop farther from its origin. |
13 | Open Shortest Path First (OSPF) | A link-state protocol, includes least-cost routing, multipath, and load balancing. |
14 | OSPF Priority | When this is not equal, the router with the highestnumber will be the DR regardless of router IDvalues |
15 | RFC 2328 | defines the OSPF metric as an arbitrary value called cost. |

OSPF Commands: Describe the results you would get from entering the commands below and how the results might be used by a network engineer.

| Command | Description |
16 | Router(config)# router ospf 123 | |
17 | Router(config-router)# network 172.16.10.0 0.0.0.255 area 0 | |
18 | Router(config-if)# ip ospf priority 50 | |
19 | Router(config-if)# bandwidth 128 | |
20 | Router(config-if)# ip ospf cost 1564 | |
21 | Router(config-if)# ip ospf hello-interval 20 | |
22 | Router# show ip ospf | |
23 | Router# show ip ospf neighbor | |
24 | Router# show ip ospf neighbor detail | |
25 | Router# show ip ospf interface | |

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