Dial-ups not browsing under OSPF environment

[siphkod]

We have just migrated fro EIGRP to OSPF with the whole network working on CISCO routers. However, dial-up customers connected to AS5300 server can connect but then they are unable to browse the Internet. We have a Sun Solaris DNS ( Radius server). Is there any special configurations to enable the browse required by OSPF which is trivial to EIGRP?

siphkod

 

[fartingfrog]

My first question would be why migrate from eigrp to ospf. But, when you say they cannot browse, but they can connect, what can they connect to? Anything past the routers? Do you mean ping? Can the routers resolve an ip to a dns? Can the hosts in question ping an ip on the internet? Please be a bit more specific. If the problems are happening past the routers, then it has nothing to do with OSPF.

Tim

 

[siphkod]

We are upgrading our network with non Cisco routers, so we need open standard routing protocol. We can't ping an internet IP address.
When we do traceroute command the resolution ends at our core router, no dns resolution is being performed.

 

[UnaBomber]

OSPF works completely different from EIGRP (OSPF = Link state, EIGRP is hybrid distance vector/Link State protocol). They use different methods to analysis the network and route accordingly. So yes there is a lot of things you need to understand and configure, which are different from EIGRP.

When we do traceroute command the resolution ends at our core router, no dns resolution is being performed.

By resolution, do you mean that the core router is the last hop which is replying to the trace? Where did you do the trace from, a computer which is dialing up or the AS5300? Does your AS5300 have a route for public ip address? Do all routers on the way to the gateway have routes.

You need to start looking at your routing tables and find a discrepancy.

UnaBomber
ccnp mcse2k

 

[holycrapbatman]

I have an idea. Can you post the running config of the core router? Do you use a dns server on your network, or the one at the ISP?

 

[siphkod]

Yes we use the DNS server

 

[siphkod]

sh run
Building configuration...

Current configuration : 1541 bytes
!
version 12.3
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname cr1kwe
!
boot-start-marker
boot-end-marker
!
enable secret
enable password !
no aaa new-model
ip subnet-zero
ip cef
!
!
ip domain name telone.co.zw
ip name-server 194.133.122.47
ip name-server 194.133.122.42
!
!
!
!
!
interface Loopback0
ip address 41.220.23.1 255.255.255.255
!
interface Ethernet0/0
ip address 194.133.159.89 255.255.255.248
no ip unreachables
no ip proxy-arp
half-duplex
no cdp enable
!
interface Serial0/0
description KWEKWE POP
bandwidth 128
ip address 209.88.88.86 255.255.255.252
no ip unreachables
no ip proxy-arp
no ip mroute-cache
no fair-queue
--More--   no cdp enable
!
interface Serial0/1
no ip address
shutdown
!
router ospf 1
router-id 41.220.23.1
log-adjacency-changes
redistribute connected
redistribute static
network 41.220.16.0 0.0.15.255 area 0
network 64.86.26.0 0.0.1.255 area 0
network 194.133.122.0 0.0.0.255 area 0
network 194.133.159.0 0.0.0.255 area 0
network 209.88.88.0 0.0.7.255 area 0
!
no ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 209.88.88.85
ip route 41.220.23.64 255.255.255.192 194.133.159.90
!
!
snmp-server engineID local 00000009020000055E28B600
snmp-server community mukadota RO
snmp-server community mutirowafanza RW
snmp-server host 194.133.122.47 rungano
!
!
end

 

[castlesmadeofsand]

Do you have a topology map you can post? If you cannot ping an outside ip, it has nothing to do with dns. Do the traces reach the gateway address? And why are your dns servers both in the same subnet?

Jimi