OSPF network question

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Hello- I was practising a lab yesterday using 2 routers and a host off
each router.
Router A's PC had a 172.16.20.0 network
Router A to Router B had a point to point link 172.16.1.0 network(uisng
addresses 172.16.1.1 and 172.16.1.2) Then the host from Router B used
172.16.1.129 as its default gateway and 172.16.1.130 as it address.

Using two network statements 172.16.1.0 0.0.0.3 area 0 (point to point)
and
172.16.1.0 0.0.0.63 for the Host network.

For some reason Router Bs host coulde ping everywhere but router A ,
and the host could not ping past Router Bs serial address- 172.16.1.129
was unreachable

In the show ip route ,Router B had learnt its routes-whereas Router A
only had directly connected routes available.
When a default route was put in to Router A 0.0.0.0 0.0.0.0 s0 ,
connectivity was gained.
What I couldnt understand was why Router B knew routes,when Router B
didnt.

Thanks alot-hope its clear-it was a Cisco Lab for Semester 3


Re: OSPF network question
daytime napisa=B3(a):
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You should have:
Router A:
router ospf 1
   network 172.16.20.0 0.0.0.255 area x
   network 172.16.1.0 0.0.0.3 area 0 (it can be also 172.16.1.1 0.0.0.0=20
area 0)


Router B:
   network 172.16.1.0 0.0.0.3 area 0
   network 172.16.1.128 0.0.0.63 area y (or 172.16.1.129 0.0.0.0 area y)


Your network statement doesn't cover 172.16.1.129 interface and thus=20
doesn't include it in OSPF routing.

Ern

Re: OSPF network question

Ern wrote:
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I see what you mean-I was following the instructions in the CCNA lab
manual,it wrote to just include network 172.16.1.0 0.0.0.63 as the
network for the host address , instead of ,as you have included
-172.16.1.128 0.0.0.63


Many thanks for that-I assume it was a typo on ciscos part.


Re: OSPF network question

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and on the other router?
you should post both routers config files.

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