unable to get pings across a network using ospf

quickshot89

quickshot89

quickshot89

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Joined
1 Feb 2009
Posts
2,124
So here is a diagram of my network



I am unable to get PC1 to ping 192.168.100.1. it can ping the same PC's in its same vlan, which is what is required
The router NCL can ping PC1.
Both routers can ping each other
LON can ping 192.168.100.1
Im completly stumped and ive been stck now for 2 days, so im asking for help here,

NCL sh run as follows:

NCL#sh run
Building configuration...

Current configuration : 1170 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname NCL
!

enable secret 5 $1$mERr$hx5rVt7rPNoS4wqbXKX7m0
enable password class
!

no ip domain-lookup
ip name-server 0.0.0.0
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.1
encapsulation dot1Q 1 native
ip address 170.10.1.0 255.255.252.0
!
interface FastEthernet0/0.10
encapsulation dot1Q 10
ip address 170.10.10.0 255.255.248.0
!
interface FastEthernet0/0.20
encapsulation dot1Q 20
ip address 170.10.20.0 255.255.240.0
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0
ip address 170.10.100.1 255.255.255.252
ip ospf cost 1563
!
interface Serial0/1
no ip address
shutdown
!
router ospf 1
router-id 10.10.10.2
log-adjacency-changes
network 170.10.100.0 0.0.0.3 area 0
network 170.10.1.0 0.0.0.255 area 0
network 170.10.10.0 0.0.0.255 area 0
network 170.10.20.0 0.0.0.255 area 0
!
ip classless
!
line con 0
password cisco
login
line vty 0 4
password cisco
login
!
end

so is anyone able help me here figure this out? i can provide extra info if needed on the Sw's config
 
ah sorry, the subnet is the same on the config
interface Serial0/0
ip address 170.10.100.1 255.255.255.252
ip ospf cost 1563
Click to expand...

edit: relationship is formed as a sh ip route confirms this:

NCL#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route

Gateway of last resort is not set

170.10.0.0/16 is variably subnetted, 4 subnets, 4 masks
C 170.10.0.0/22 is directly connected, FastEthernet0/0.1
C 170.10.8.0/21 is directly connected, FastEthernet0/0.10
C 170.10.16.0/20 is directly connected, FastEthernet0/0.20
C 170.10.100.0/30 is directly connected, Serial0/0
O 192.168.100.0/24 [110/1564] via 170.10.100.2, 00:04:44, Serial0/0

to get an update i had to unplug fa0/0 on NCL and plug it back in a few seconds later

%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to down
01:28:36: OSPF: DR/BDR election on FastEthernet0/0.1
01:28:36: OSPF: Elect BDR 0.0.0.0
01:28:36: OSPF: Elect DR 0.0.0.0
01:28:36: OSPF: Elect BDR 0.0.0.0
01:28:36: OSPF: Elect DR 0.0.0.0
01:28:36: DR: none BDR: none
01:28:36: OSPF: Build router LSA for area 0, router ID 10.10.10.2, seq 0x80000007
01:28:36: OSPF: Build router LSA for area 0, router ID 10.10.10.2, seq 0x80000008
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.10, changed state to down
01:28:36: OSPF: DR/BDR election on FastEthernet0/0.10
01:28:36: OSPF: Elect BDR 0.0.0.0
01:28:36: OSPF: Elect DR 0.0.0.0
01:28:36: OSPF: Elect BDR 0.0.0.0
01:28:36: OSPF: Elect DR 0.0.0.0
01:28:36: DR: none BDR: none
01:28:36: OSPF: Build router LSA for area 0, router ID 10.10.10.2, seq 0x80000008
01:28:36: OSPF: Build router LSA for area 0, router ID 10.10.10.2, seq 0x80000009
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.20, changed state to down
01:28:36: OSPF: DR/BDR election on FastEthernet0/0.20
01:28:36: OSPF: Elect BDR 0.0.0.0
01:28:36: OSPF: Elect DR 0.0.0.0
01:28:36: OSPF: Elect BDR 0.0.0.0
01:28:36: OSPF: Elect DR 0.0.0.0
01:28:36: DR: none BDR: none
01:28:36: OSPF: Build router LSA for area 0, router ID 10.10.10.2, seq 0x80000009
01:28:36: OSPF: Build router LSA for area 0, router ID 10.10.10.2, seq 0x8000000a
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.1, changed state to up
01:28:49: OSPF: Build router LSA for area 0, router ID 10.10.10.2, seq 0x8000000a
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.10, changed state to up
01:28:49: OSPF: Build router LSA for area 0, router ID 10.10.10.2, seq 0x8000000b
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0.20, changed state to up
01:28:49: OSPF: Build router LSA for area 0, router ID 10.10.10.2, seq 0x8000000c
 
Last edited:
p2p pings correctly :)

and sucess, the default gateway on the Pc's wasnt entered, i guess it was becuase i thought that as the switches would just do this for me in the inter vlan routing

cheers for the help
 
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