show ip ospf interface brief showing passive interfaces?

aocferreira

Hi,

The show ip ospf interface brief command should omit passive interfaces, right?

R3#show ip ospf interface brief
Interface PID Area IP Address/Mask Cost State Nbrs F/C
Fa0/1 3 0 192.168.3.3/26 10 DR 0/0
Se0/1 3 0 10.1.23.1/30 64 P2P 1/1
Fa0/0 3 0 10.1.3.3/26 10 DR 0/0

--

R3#show ip protocols
Routing Protocol is "ospf 3"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Router ID 3.3.3.3
Number of areas in this router is 1. 1 normal 0 stub 0 nssa
Maximum path: 4
Routing for Networks:
10.1.0.0 0.0.255.255 area 0
192.168.3.3 0.0.0.0 area 0
Reference bandwidth unit is 100 mbps
Passive Interface(s):
FastEthernet0/0
FastEthernet0/1
Routing Information Sources:
Gateway Distance Last Update
2.2.2.2 110 02:04:43
3.3.3.3 110 02:04:53
Distance: (default is 110)

Q: What can be causing this?

The topology can be found attached... it's from one of those cisco press books!

networker050184

Why would it omit passive interfaces? It's showing all the interfaces in OSPF.

aocferreira

Because I thought that was the way it worked... also as EIGRP. Besides, it's stated in the book:
" show ip ospf interface brief -> Lists the interfaces on which OSPF is enabled (based on the network commands); it omits passive interfaces. "

Its not a big thing, I just thought that something specific in this scenario could be making the interfaces appearing there.

networker050184

Actually you are right. It does exclude passive interfaces in that command. Can we see your OSPF config?

aocferreira

It was basic interface/OSPF configuration. Please see below relevant commands from running-config.

R1:

interface Loopback1
ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
ip address 10.1.1.1 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0
ip address 10.1.12.1 255.255.255.252
clock rate 2000000
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
clock rate 2000000
!
router ospf 1
log-adjacency-changes
network 10.0.0.0 0.255.255.255 area 1


R2:

interface Loopback1
ip address 2.2.2.2 255.255.255.255
!
interface FastEthernet0/0
ip address 10.1.2.2 255.255.255.128
duplex auto
speed auto
!
interface Serial0/0
ip address 10.1.23.2 255.255.255.252
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 secret
clock rate 2000000
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1
ip address 10.1.12.2 255.255.255.252
clock rate 2000000
!
router ospf 2
log-adjacency-changes
network 10.1.12.2 0.0.0.0 area 1
network 10.1.0.0 0.0.255.255 area 0


R3:

interface Loopback1
ip address 3.3.3.3 255.255.255.255
!
interface FastEthernet0/0
ip address 10.1.3.3 255.255.255.192
duplex auto
speed auto
!
interface Serial0/0
no ip address
shutdown
clock rate 2000000
!
interface FastEthernet0/1
ip address 192.168.3.3 255.255.255.192
duplex auto
speed auto
!
interface Serial0/1
ip address 10.1.23.1 255.255.255.252
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 secret
clock rate 2000000
!
router ospf 3
log-adjacency-changes
passive-interface FastEthernet0/0
passive-interface FastEthernet0/1
network 10.1.0.0 0.0.255.255 area 0
network 192.168.3.3 0.0.0.0 area 0

networker050184

Looks to be configured right. Might just be the IOS version, or are you doing it on a simulator or something?

aocferreira

Yes, I'm using GNS3.

The version is below:

Cisco IOS Software, 2600 Software (C2691-ADVIPSERVICESK9-M), Version 12.4(15)T6