Bani This is my understanding...Just with any rule..you allow certain things and you don't allow some. Reserve some things and you don't reserve some...What I'm trying to say is the matter of logical and efficient,convinient, simple or orderly if you will...when the InterNIC was given the task of IP addressing they had to have some IP addresses be reserved Not used for anything else) but for specific functions internetwork.Such as multicasting for example, 224.0.0.9, 224.0.0.10...224.0.0.5 224.0.0.6 ..in routing protocol(IGRP,OSPF etc.) Or Loopback testing 127.0.0.0.. better still 255.255.255.255 for broadcasting... I don't think there is any mathematical implication but order. Just look at this order and logic below......
Class A = 1-126 ( 0,127 reserved) Class B = 128-191 Class C = 192- 223 Class D = 224-239 (Multicast) If you find one please let me...... Thank you Ollie AT&T Common Backbone 866-397-7309 Opt 1 -----Original Message----- From: Bharani [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 02, 2003 8:14 AM To: [EMAIL PROTECTED] Subject: Interesting Question [7:74652] Dear Readers Does any one know the Mathematical reason for making 127.X.X.X as a Loop Back address, if so please let me know Thanks in advance Bani **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=74670&t=74652 -------------------------------------------------- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
