Hello Friends,
A doubt arise after comparing the output of the tests for this exercise.
- The forward address on below output appears to be 0.0.0.0 when R6 is ABR/ASBR (F0/0.146 and L0 UP)
Rack1SW1#sh ip ospf data nssa-external 0.0.0.0
OSPF Router with ID (150.1.7.7) (Process ID 1)
Type-7 AS External Link States (Area 2)
LS age: 777
Options: (No TOS-capability, No Type 7/5 translation, DC)
LS Type: AS External Link
Link State ID: 0.0.0.0 (External Network Number )
Advertising Router: 150.1.6.6
LS Seq Number: 80000001
Checksum: 0x6BA2
Length: 36
Network Mask: /0
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 1
Forward Address: 0.0.0.0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
External Route Tag: 0
Rack1SW1#
- As soon as R6 is isolated from Area 1/0, so it's no longer an ABR (F0/0.146 and L0 in shut) the forward address is 155.1.67.6
My question is: when the ASBR has a shared role as ABR also, this is the normal behavior (as it is with LSA Type-5 lookups) or there is another cause?
Cheers.... Victor.
My configs for this are are the same that in the WB
R6
router ospf 1
router-id 150.1.6.6
log-adjacency-changes
area 1 virtual-link 150.1.1.1
area 2 nssa default-information-originate
R3
router ospf 1
router-id 150.1.3.3
log-adjacency-changes
area 2 nssa no-summary
area 2 default-cost 500
SW3
router ospf 1
router-id 150.1.9.9
log-adjacency-changes
area 2 nssa
SW1
router ospf 1
router-id 150.1.7.7
log-adjacency-changes
area 2 nssa