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OSPF route cannot be established
Hell everyone,
There is a gre network with ospf.
I use Quagga ospfd connect with other OSPF equipment, but the route cannot
learn from peer OSPF equipment.
This is ospf database log, does anyone know if the Link ID 0.0.0.0 is the
reason causes route cannot be established?
===========================================================
530> show ip ospf database

OSPF Router with ID (172.16.2.254)

Router Link States (Area 0.0.0.0)

Link ID ADV Router Age Seq# CkSum Link count
172.16.1.248 172.16.1.248 441 0x80000e27 0x9e87 3
172.16.1.249 172.16.1.249 1312 0x80000de9 0x1a64 1
172.16.2.254 172.16.2.254 436 0x80000008 0x9271 4

Net Link States (Area 0.0.0.0)

Link ID ADV Router Age Seq# CkSum
26.26.26.1 172.16.1.248 440 0x80000001 0x904f
172.16.1.249 172.16.1.249 411 0x80000dbf 0xefc0

AS External Link States

Link ID ADV Router Age Seq# CkSum Route
*0.0.0.0 172.16.1.248 345 0x80000dcc 0xdc67 E2 0.0.0.0/0
<http://0.0.0.0/0> [0x0]*
*0.0.0.0 172.16.1.249 1242 0x80000dc3 0xe863 E2 0.0.0.0/0
<http://0.0.0.0/0> [0x0]*
10.10.101.0 172.16.1.248 1425 0x800008f7 0x3f65 E2 10.10.101.0/24
[0x0]
10.10.101.1 172.16.2.254 436 0x80000006 0xf60c E2 10.10.101.1/32
[0x0]
10.10.104.0 172.16.1.248 705 0x8000071b 0xdaa4 E2 10.10.104.0/24
[0x0]
10.10.112.0 172.16.1.248 1425 0x800008f7 0xc5d3 E2 10.10.112.0/24
[0x0]
10.20.30.0 172.16.1.248 345 0x8000014f 0x3d54 E2 10.20.30.0/24
[0x0]
172.16.0.0 172.16.1.248 525 0x80000dc4 0x6728 E2 172.16.0.0/24
[0x0]
172.16.0.0 172.16.1.249 1242 0x80000dc3 0x632c E2 172.16.0.0/24
[0x0]
172.16.30.0 172.16.1.248 525 0x80000dc4 0x1c55 E2 172.16.30.0/24
[0x0]
172.16.30.0 172.16.1.249 1242 0x80000dc3 0x1859 E2 172.16.30.0/24
[0x0]
172.16.255.0 172.16.1.248 1245 0x8000014e 0x7899 E2 172.16.255.0/24
[0x0]
192.168.137.0 172.16.1.248 345 0x800008fe 0xec37 E2 192.168.137.0/24
[0x0]
192.168.137.0 172.16.1.249 1242 0x800008f8 0xf236 E2 192.168.137.0/24
[0x0]
===========================================================

This is our configure log, does anyone knows how to fix and let route be
established?
Our ospfd conf:
=========================================
password zebra
!
access-list vty permit 127.0.0.0/8
access-list vty deny any
!
line vty
access-class vty
!
!
interface br0
ip ospf cost 1
ip ospf priority 1
!
interface gretunnel
ip ospf cost 10
ip ospf priority 1
!
router ospf
network 172.16.2.0/24 area 0
network 26.26.26.0/24 area 0
redistribute connected
redistribute kernel
!
log syslog
=========================================

Other OSPF equipemnt:
=========================================
ip service all
ip interface "v1" address 172.16.1.248 mask 255.255.255.0 vlan 1 ifindex 1
ip interface "v101" address 10.10.101.1 mask 255.255.255.0 vlan 101 ifindex
2
ip interface "gre_soushan" address 26.26.26.1 mask 255.255.255.0 tunnel
protocol gre source 10.10.101.1 destination 10.10.104.1 ifindex 5

ip load ospf
ip ospf area 0.0.0.0
ip ospf interface "gre_soushan"
ip ospf interface "gre_soushan" area 0.0.0.0
ip ospf interface "gre_soushan" status enable
ip ospf interface "v1"
ip ospf interface "v1" area 0.0.0.0
ip ospf interface "v1" status enable
ip ospf status enable

ip route-map "LOCAL4_OSPF_1" sequence-number 1 action permit
ip route-map "LOCAL4_OSPF_1" sequence-number 1 match ip-address
0.0.0.0/0 redist-control
all-subnets permit
ip route-map "LOCAL4_OSPF_1" sequence-number 1 set metric 1 effect none
ip redist local into ospf route-map "LOCAL4_OSPF_1" status enable
ip redist static into ospf route-map "LOCAL4_OSPF_1" status enable
=========================================

Thanks
James Chan
Re: OSPF route cannot be established [ In reply to ]
On Tue, 14 Feb 2017, ??? wrote:

> Hell everyone,
> There is a gre network with ospf.
> I use Quagga ospfd connect with other OSPF equipment, but the route cannot
> learn from peer OSPF equipment.

> This is ospf database log, does anyone know if the Link ID 0.0.0.0 is the
> reason causes route cannot be established?

Highly unlikely.

Have a look at "show ip ospf neighbor" first to see if the adjacency is
up.

If it isn't up, the common problems are:

- not having OSPF enabled on a common IP subnet on both routers

- mismatch in some parameter that must match, e.g. the Dead timer

- Firewalling blocking OSPF somehow

regards,
--
Paul Jakma | paul@jakma.org | @pjakma | Key ID: 0xD86BF79464A2FF6A
Fortune:
"Hardware simply does not work like the manual says and no amount
of Zen contemplation will ever make you at one with a 3c905B
ethernet card."

- Alan Cox