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Subnetting (ANalysing Subnet masks (Netowkr address, number possible host…
Subnetting
ANalysing Subnet masks
Netowkr address
number possible host addresses
first host address
broadcast address
range useable addresses
Subnet NEEDS
diff boradcast domains on different subnets
for every VLAN
for every point-to-point serial link (eg router to router)
ethernet emulatoin
Classfull networks
(unicast addresss types)
CLASS A - 1-126
/8 (24)
CLASS B - 127 - 191
/16
CLASS C - 192 - 224
/24 (8)
DHCP - dynamic host configuiration protocol
as oposed to static
always need to asign default routers &
ip helper next stop if not on same subnet
How many IP addresses needed
for every device
for routers
CLASS D - 224 -239
Multicast (eg streaming)
Hosts need to 'register@
240 - 255 (experimental)