~~~~~~ 3rd Lecture - Networking IP Subnetting ~~~~~~~~

[ToughGuy]

clear  S%Hi

[krldr871]

ippudu ipv6 ki antha upgrade ayyaka, NAT, CIDR vaadthaara leda inkaa..emaina decision teeskunnara deeni paina  sCo_^Y sCo_^Y sCo_^Y

[k2s]

[quote author=John Galt link=topic=234570.msg2923993#msg2923993 date=1315518297]
ippudu ipv6 ki antha upgrade ayyaka, NAT, CIDR vaadthaara leda inkaa..emaina decision teeskunnara deeni paina  sCo_^Y sCo_^Y sCo_^Y
[/quote]no.........

[ToughGuy]

[quote author=John Galt link=topic=234570.msg2923993#msg2923993 date=1315518297]
ippudu ipv6 ki antha upgrade ayyaka, NAT, CIDR vaadthaara leda inkaa..emaina decision teeskunnara deeni paina  sCo_^Y sCo_^Y sCo_^Y
[/quote]
IPV4 addresses almost vanished kadaa ..so NO

[k2s]

If IP subnetting is done..then we are diluting the original IP address mask.......
as we know

class A means /8
class B means /16
class C means /24
Class D is multicast

above are CLASSFUL MASKS



using CLASSFULL masks results in IP addresses wastage. ........ suppose our company need 250 hosts to connect...... we can choose one /24 IP address which contains 255 hosts.........

what if we need 180 hosts........ we still can choose /24 IP address mask but resulting in wastage of IP address space......to avoid this we go for subnetting & mask other than above mentioned classfull mask -------- resulting in CLASSLESS MASKs

[k2s]

Review of IP adressing in 1 figure

[img]http://www.cisco.com/image/gif/paws/13788/3an.gif[/img]

[robo]

*=:

[k2s]

Subnetting examples :

DeviceA: 172.16.17.30/20
DeviceB: 172.16.28.15/20

how many hosts, networks etc are there

[k2s]

Determining the Subnet for DeviceA:

172.16.17.30  -  10101100.00010000.00010001.00011110
255.255.240.0 -  11111111.11111111.11110000.00000000
                            --------------------------| sub|------------
subnet    =          10101100.00010000.[color=red]0001[/color]0000.00000000 = 172.16.16.0
Looking at the address bits that have a corresponding mask bit set to one, and setting all the other address bits to zero (this is equivalent to performing a logical "AND" between the mask and address), shows you to which subnet this address belongs. In this case, DeviceA belongs to subnet 172.16.16.0.

red color is subnet bits ....

[k2s]

can any one give solution for 2nd one

[robo]

[quote author=k2s link=topic=234570.msg2924063#msg2924063 date=1315519188]
can any one give solution for 2nd one
[/quote] s%H#

[k2s]

[quote author=ROBO link=topic=234570.msg2924073#msg2924073 date=1315519269]
s%H#
[/quote] *7*^

i want answer

[robo]

[quote author=k2s link=topic=234570.msg2924078#msg2924078 date=1315519323]
*7*^

i want answer
[/quote]question kavali  s%H# s%H#

[krldr871]

[quote author=k2s link=topic=234570.msg2924040#msg2924040 date=1315518974]
Subnetting examples :

DeviceA: 172.16.17.30/20
DeviceB: 172.16.28.15/20

how many hosts, networks etc are there
[/quote]
16 subnets 2^12 - 2 hosts ankunta

[robo]

e thread naku chala imp ippudu chaduvu ta padukoni  s%H# s%H#