I have four routers: one is 1811 and three 871. I want to configure dynamic routing between them and I choosed OSPF to do that. Because of that routers doesn't have layer 3 FE interfaces but only 8 or 4 port switch interfaces, i am not sure how to do the dynamic routing. I configured Vlan 99 on all of the routers and connected the three 871's to 1811.
To understand me better i attach a picture of the topology!
So with this topology shoul i disable split horizon on int vlan99 at 1811 router??? I think i have to disable it because routing updates from any of the 871 routers will not be redistributed.
Could be wrong but is the 1811 not a fixed chassis, ie, no modules, I did not know you could use them as L2 interfaces but could be wrong, if so then, split horizon will not help you here as that is a Distance Vector protocol feature and you are using OSPF which is a Link State protocol. This sounds more like a configuration issue.
As all the interfaces are in the same VLAN, then I assume you have put them all in the same subnet right?
I also assume you are using the ethernet module in the
Can you ping any of the routers
Have you put the interfaces in to the same area, ie
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