>I am trying to do a lab that needs a inter-area ospf summary address
>configured
>I have two loopbacks 137.20.1.17/28 and 137.20.1.33/28. These are then of
>course on networks 137.20.1.16 and 137.20.1.32. Taking the last octet of the
>subnets into binary we have:
>
>16= 00010000
>32= 00100000
^^^^^^^^
1
2631
8426
Try .240. You aren't picking up the low-order bits of the summarizable part.
> Acording to Doyle and everything else I have read I should be able to
>summarize by masking the first two bits. I should be able to use:
>area 11 range 137.20.1.32 255.255.255.192. I am not able to and the router
>says I have a invalid address/mask. Furthermore the solution to the lab uses
>"area 11 range 137.20.1.0 255.255.255.0" which creates a summary address to
>all addresses of 137.20.1.X. What am I missing. This does work and I am able
>to ping the loopbacks but the math doesn't work for me. I should be able to
>summarize the 16 and 32 subnets.
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