How to fix OSPF so pc1 and pc2 can ping each other

[Martin L]

Routes are missing; at least 2 routes are missing on the edge routers

there is problem between R2 and R3; OSPF neighboring is not establish between those 2.  can u see why from show run ?

Regards, ML
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[Joseph W. Doherty · Accepted solution]

Hint:

One statement on R3 is causing the problem.

Fix it, and you can ping between the two PCs.

Laugh - I would've responded earlier, but your PT file was one release newer than the PT I was using.  Couldn't open your PT file until I upgraded my copy of PT.

[rakiyauzma · Accepted solution]

Hi,

fixed R3 router still cannot ping.

[rakiyauzma]

R2 and R3 neighbors are established. still cannot ping. 

[Martin L]

OSPF timers must match to establish neighborhoods and exchange routes. Compare interface settings on link between R2 and 3.  After that I got pings ok

Regards, ML
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[rakiyauzma]

Hi,

Thank you so much..I have got the results Pcs and ping each other.

[Joseph W. Doherty]

Wonderful!

To add to @Martin L's last reply, there are various attributes of OSPF that much match, between routers, for OSPF to form an OSPF adjacency.  If all such don't match, no adjacency will form.

Also BTW, there are some OSPF configuration changes that could be made that would speed up forming the adjacency and/or "simplify" the configuration.

For the former, even though you're using /24s (I recall?) between routers, as there's just a pair, you can tell the routers to be p2p.

For the latter, your OSPF network statements are overlapping.  Doesn't cause any direct harm, but clutters the config with needless extra statements, but more than appearance, having those needless extra statements may cause one to wonder why they are there, and/or lead to inadvertently misconfiguration of OSPF,