From: Antonio Soares (amsoares@netcabo.pt)
Date: Tue Jul 31 2007 - 21:50:47 ART
Check this document:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122
t/122t2/ft31addr.htm
Regards,
Antonio Soares
CCIE #18473, CCNP, CCIP
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Toh
Soon, Lim
Sent: quarta-feira, 1 de Agosto de 2007 1:33
To: ccielab@groupstudy.com
Subject: 31-bit Prefixes on IPv4 Point-to-Point Links
Hi All,
If the question is phrased as follows:
----------------------------------------------------------------------------
---- 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.---------------------------------------------------------------------------- ----
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
This archive was generated by hypermail 2.1.4 : Sat Aug 18 2007 - 08:17:42 ART