CCIE Pursuit Blog

April 17, 2008

Question Of The Day: 17 April, 2008

Topic: OSPF

ospf router 100
 network 10.1.1.1 0.0.0.0 area 0
 area 0 authentication
 area 123 authentication message-digest
 network 1.1.1.1 0.0.0.0 area 0
 network 10.1.2.1 0.0.0.0 area 123
 area 123 virtual-link 2.2.2.2

Which type of OSPF authentication is the virtual-link running?

Click Here For The Answer


Yesterday’s Question

Question Of The Day: 16 April, 2008 

Topic: OSPF

Which OPSF area is interface Fa0/0 in?

What OPSF area is interface Fa0/0 in?

r1#sh run | sec router ospf|net0/0
interface FastEthernet0/0
 ip address 10.1.12.1 255.255.255.0
 ip ospf 100 area 3
router ospf 100
 log-adjacency-changes
 network 10.1.12.1 0.0.0.0 area 2
 network 10.1.12.0 0.0.0.255 area 1
 network 0.0.0.0 255.255.255.255 area 0

Answer:  Interface fa0/0 will be in OSPF area 3

The interface level OSPF area command takes precedence over the process level OSPF area command.

ip ospf area

The ip ospf area command that is entered in interface configuration mode will supersede the effects of the network area command. Therefore, an interface that is configured with the ip ospf area command in interface configuration mode will not be affected by the network area command.

r1#show ip ospf interface brief
Interface    PID   Area            IP Address/Mask    Cost  State Nbrs F/C
Fa1/0        100   0               10.1.13.1/24       1     DR    0/0
Fa0/0        100   3               10.1.12.1/24       1     DR    0/0 

r1#show ip ospf interface fa0/0 | i prot|Area
FastEthernet0/0 is up, line protocol is up
  Internet Address 10.1.12.1/24, Area 3

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2 Comments »

  1. […] Question Of The Day: 17 April, 2008  […]

    Pingback by Question Of The Day: 17 April, 2008 « CCIE Pursuit — April 18, 2008 @ 7:25 am | Reply

  2. […] Question Of The Day: 17 April, 2008  […]

    Pingback by Question Of The Day: 18 April, 2008 « CCIE Pursuit — April 18, 2008 @ 7:26 am | Reply


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