10-28-2011 06:00 PM - edited 03-04-2019 02:05 PM
Hi all,
I have total five routers
HQ, SB, SC
FR
PSTN
HQ Router is physicall connected to FR through Serial Cables (Note: HQ is connected to SB & SC through FR, there is no ip address configured on serial interfaces of FR Router).
FR Router is connected to PSTN Router through fa0/0 interface having IP's 142.250.1.1 - 142.250.1.2.
ospf is configured on all routers with default network
router ospf 1
network 0.0.0.0 0.0.0.0 area 0
From HQ Router i can ping SB, SC Interfaces but from HQ Router i cant ping fa0/0 interface of FR.
when i check the routes on FR through sh ip route ospf i didnt find any routes learned from HQ & when i do the same on HQ, no routes are advertised from FR to HQ
I can see the network information of FR Router into HQ in sh ip ospf interface command & there netwok type is broadcast, which is same in FR & PSTN router .. i dont know why HQ & FR are not advertising route to each other ..
Can any body help here urgent please
Please find the below result from HQ for FR
********************************************************************************
HQ#
HQ#sh ip ospf interface fa0/1
FastEthernet0/1 is up, line protocol is down
Internet Address 142.250.1.2/24, Area 0
Process ID 1, Router ID 1.1.1.1, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State DOWN, Priority 1
No designated router on this network
No backup designated router on this network
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
HQ#
********************************************************************************
********************************************************************************
From FR
FR-Router#sh ip ospf interface
FastEthernet0/0 is up, line protocol is up
Internet Address 142.250.1.2/24, Area 0
Process ID 1, Router ID 142.250.1.2, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State BDR, Priority 1
Designated Router (ID) 142.250.1.1, Interface address 142.250.1.1
Backup Designated router (ID) 142.250.1.2, Interface address 142.250.1.2
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:03
Supports Link-local Signaling (LLS)
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 3
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 142.250.1.1 (Designated Router)
Suppress hello for 0 neighbor(s)
FR-Router#
********************************************************************************
********************************************************************************
From PSTN
PSTN#sh ip ospf interface
FastEthernet0/1 is up, line protocol is up
Internet Address 142.250.1.1/24, Area 0
Process ID 1, Router ID 142.250.1.1, Network Type BROADCAST, Cost: 1
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router (ID) 142.250.1.1, Interface address 142.250.1.1
Backup Designated router (ID) 142.250.1.2, Interface address 142.250.1.2
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:04
Supports Link-local Signaling (LLS)
Cisco NSF helper support enabled
IETF NSF helper support enabled
Index 3/3, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 0, maximum is 3
Last flood scan time is 0 msec, maximum is 4 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 142.250.1.2 (Backup Designated Router)
Suppress hello for 0 neighbor(s)
***********************************************************************************************
Regards
10-28-2011 07:00 PM
On the HQ router
Internet Address 142.250.1.2/24, Area 0
on the FR router
Internet Address 142.250.1.2/24, Area 0
You assigned the same IP to two different interfaces
change one of them to
Internet Address 142.250.1.3/24, Area 0
HTH
10-28-2011 11:00 PM
Hi,
Sorry to inform you that int fa0/1 on HQ is not connected into network
Regads,
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