This is an interesting situation. You are not allowed to use the ip ospf
network command to change the network type ? Ok. Are you allowed to change
the ptp on R1 to multipoint ? No ?
The network type is a critical factor on whether full adjacency is achieved.
Frame map statements and ip ospf priority 0 statements on R2 and R3 in
conjunction with dcli and neigbor statements on R1 should take care of the
links between R1, R2 and R3. No ip ospf network command needed here.
The link between R1 and R4 will probably become two-way without achieving
full adjacency because the network types will always be different unless you
are allowed to change it in some way. Is there a specific requirement to
keep R1's link to R4 as point-to-point ? If not this subinterface could be
changed to multipoint and OSPF should not have any problem with it.
Let us know if you find another solution.
Winston(CCIE#7991).
-----Original Message-----
From: Cisco Lover [mailto:[EMAIL PROTECTED]]
Sent: Saturday, August 25, 2001 2:13 AM
To: [EMAIL PROTECTED]
Subject: FR +OSPF Scenerio...CCBOOTCAMP LAB:3 [7:17117]
Hi Guys..
Facing some strange problem in OSPF..
DO u know any condition if two routers become adjacent but still cant
exchange routes???What could be the reasons for it?
In this Lab, We have 2 subinterfaces on R1.One multipoint subinterface is
connected to two routers R2 & R3 physical interfaces.
The other PtP subinterface on R1 is connected to R4 physical interface.
Now problem is that we are not allowed to use IP OSPF NETWORK COMMADN
on these interfaces in order to make the same network type.
The problem I m facing is on R1 & R4 link.When I applied debug ip ospf,I
see Hello mismatch SO I match the Hello values on both sides .AFter that I
am able to see that R4 is now adjacent with R1 Point to point interface but
Still I cant see any route from R1 coming on R4 or vice versa..
Any Suggestion GUYSSSS....;
Thanks a lot!!!!
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