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Cards In This Set
| Front | Back |
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In OSPF, what is a grouping of contiguous networks and routers called?
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OSPF area
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How do OSPF routers become neighbours/adjacent?
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When each router sees the other's HELLO packets.
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Commands to enable OSPF process 1 on router connected to 10.0.0.0 in area 0?
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Router ospf 1
network 10.0.0.0 0.255.255.255 area 0
(If single area, area is always 0)
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What is OSPF routers in area 0 called?
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Backbone router.
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1) What is OSPF router connecting area 0 and other area called?
2) What is OSPF router connecting to other AS called?
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1) ABR (Area Border Router).
2) ASBR (Autonomous System Boundary Router).
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What is OSPF router which is elected to spread /receive routing info to/from remaining routers called?
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DR (Designated Router)
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What is OSPF router which is standby for DR called?
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BDR (Backup Designated Router)
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What is OSPF data packet containing link-state and routing information to maintain topological database?
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LSA (Link State Advertisement)
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What is algorithm OSPF use to calculate best/shortest path?
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SPF (Shortest Path First)
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What is default OSPF Hello and Dead timers?
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OSPF Hello - 10 secs
OSPF Dead - 40 secs
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What is OSPF Hello multicast address?
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224.0.0.5
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Commands to change priority of int f0/1 to 2?
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Int f0/1
ip ospf priority 2
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Commands to configure a loopback int using 172.16.10.1?
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Int loopback 0
ip address 172.16.10.1 255.255.255.255
no shutdown
(255.255.255.255 is Host Mask)
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In OSPF, what is list of all OSPF routers for which Hello packets have been seen, i.e. adjacency table?
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Neighbor table.
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In OSPF, what is list of all of LSA packets received for an area, i.e. link-state table?
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Topology table.
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