Experts,

I just completed LAB 8 of volume 3, section 2.1 leads you to create an 
interesting WAN topology, and section 3.3 enables OSPF over that topology.

My configuration in section 2.1  lacked these commands on my virtual interface.

ppp multilink
ppp multilink links minimum 3 mandatory

Furthermore, I did not and still do not understand the need for the ip 
unnumberd solution in 3.3

I was getting results with a route to the correct next hop, but down the wrong 
PVC!

The IP unnumbered approach in the DSG fixed everything, but I don't know why?

What does IP unnumbered buy you with OSPF ?  What was happening to screw up my 
routes?

Thanks in advance


Patrick A. Baldwin (Alex)
Network Engineering
Colsa Corp., HOSC Contract
NASA , Marshall Space Flight Center
*Office: (256) 544-2089
ÊFax: (256) 544-8629
*E-mail: [email protected]<mailto:[email protected]>

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