OSPF Flashcards
Manually configure the OSPF router ID:
R1(config-router)# […]
router-id a.b.c.d
Does the OSPF process ID have to match for two routers to become OSPF neighbors?
No
Does single-area OSPF have to use area 0?
No
An […] is an OSPF router that connects the OSPF network to an external network.
autonomous system boundary router (ASBR)
OSPF: What does ASBR stand for?
Autonomous System Boundary Router
Reset the OSPF process on the local router:
R1# […]
clear ip ospf process
OSPF Router ID selection priority:
1. Manual configuration
2. Highest IP address on a loopback interface
3. […]
Highest IP address on a physical interface
OSPF Router ID selection priority:
1. Manual configuration
2. […]
3. Highest IP address on a physical interface
Highest IP address on a loopback interface
OSPF Router ID selection priority:
1. […]
2. Highest IP address on a loopback interface
3. Highest IP address on a physical interface
Manual configuration
Configure the maximum number of paths an OSPF router will use to perform ECMP load-balancing:
R1(config-router)# […]
maximum-paths number
Modify the OSPF AD on the local router:
R1(config-router)# […]
distance value
Configure an OSPF router to advertise its default route into the OSPF domain:
R1(config-router)# […]
default-information originate
Prevent an OSPF router from sending OSPF messages out of an OSPF-enabled interface:
R1(config-router)# […]
passive-interface interface-id
Enable OSPF on interfaces in the specified range:
R1(config-router)# […]
network ip-address wildcard-mask area area
Enter OSPF configuration mode:
R1(config)# […]
router ospf process-id
OSPF: An […] route is a route to a destination in a different OSPF area.
interarea
OSPF: An […] route is a route to a destination inside the same OSPF area.
intra-area
OSPF: Routers connected to the backbone area (area 0) are called […] routers.
backbone
OSPF: It is recommend that you connect an ABR to a maximum of […] areas.
2
OSPF: What does ABR stand for?
Area Border Router
OSPF: Routers with interfaces in multiple areas are called […].
area border routers (ABRs)
OSPF: Routers with all interfaces in the same area are called […] routers.
internal
OSPF: The backbone area (area […]) is an area that all other areas must connect to.
0
OSPF: The […] area (area 0) is an area that all other areas must connect to.
backbone
OSPF: An […] is a set of routers and links that share the same LSDB.
area
OSPF can divide networks into separate […]
areas
OSPF LSAs have a default aging timer of [time]
30 minutes
OSPF LSAs are organized in a structure called the […].
LSDB
OSPF […] are organized in a structure called the LSDB.
LSAs
OSPF: What does LSDB stand for?
Link State Database
OSPF: What does LSA stand for?
Link State Advertisement
Which version of OSPF is used for IPv6?
OSPFv3
Which version of OSPF is usually used for IPv4?
OSPFv2
The Shortest Path First algorithm is also known as […]’s algorithm.
Dijkstra