From: Toh Soon, Lim (tohsoon28@gmail.com)
Date: Tue Jul 31 2007 - 21:32:38 ART
Hi All,
If the question is phrased as follows:
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Configure the Serial link between R7 and R8 with PPP encapsulation and place
on the 150.50.102.0 subnet.
This configuration should support only R7 and R8 as viable hosts on this
subnet.
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Should I configure the link as /30 or /31? If I go with 31-bit prefix, the
IP addresses would be 150.50.102.0/31 and 150.50.102.1/31.
By the way, are 31-bit prefixes commonly used in the real-world to address
point-to-point links? I have learned of its advantages e.g. conserving IP
addresses, elimination of directed broadcast address, etc. Are there any
disadvantages?
Thank you.
B.Rgds,
Lim TS
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