Which OSPF area will int fa0/0 be assigned:
interface FastEthernet0/0
ip address 10.1.12.1 255.255.255.0
ip ospf 100 area 12
Rack1R1(configr)#router ospf 100
Rack1R1(config-router)#network 10.1.12.1 0.0.0.0 area 21
Rack1R1(config-router)#network 10.1.12.1 255.255.255.255 area 2
Rack1R1(config-router)#network 10.1.12.0 0.0.0.255 area 3
Rack1R1(config-router)#network 10.1.12.0 255.255.255.0 area 4
Highlight for answer: Area 12
CCIE Pursuit Blog 
Area 12, I think the interface level area commands take precedence.
Comment by Ryan — April 2, 2009 @ 9:39 am |
interface Serial0/3/0
ip address 136.1.15.1 255.255.255.0
ip ospf 1 area 5
router ospf 1
router-id 150.1.1.1
log-adjacency-changes
auto-cost reference-bandwidth 20000
area 0 authentication message-digest
redistribute eigrp 100 subnets route-map EIGRP->OSPF
network 136.1.15.1 0.0.0.0 area 0
network 150.1.1.1 0.0.0.0 area 0
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
136.1.4.0 150.1.4.4 1044 0x80000024 0x006CB7
136.1.15.0 150.1.1.1 217 0x80000001 0x004CF2
Rack1R1#s ip os int s0/3/0
Serial0/3/0 is up, line protocol is up
Internet Address 136.1.15.1/24, Area 5
So, interface is king, followed by most specific.
Comment by Ryan — April 2, 2009 @ 9:47 am |
Hey I really enjoy these questions… Keep them coming 🙂
Comment by Andrew — April 2, 2009 @ 1:36 pm |
These core knowledge questions are awesome, sincerely appreciated, and are acting to dampen my fears of the open ended questions section. As others have stated, please keep them coming! 😀
Comment by ElectricJaguar — April 2, 2009 @ 2:06 pm |