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jeret
join:2013-05-27

jeret

Member

[Windows] purpose of network id and broadcast id ?

i have some questions which is a bit confusing to me. hopefully someone here would be able to help me..

for example if i had given an IP address of 192.168.1.200 and subnet mask of 255.255.255.192, and i have to find how many networks, how many hosts for each network and the network ID and broadcast ID. I will get something like this :

-----------------------------------------
192.168.1.0 *** NETID
192.168.1.1 FFF
192.168.1.62 LLL 1
192.168.1.63 *** BRODCAST
--------------------------------
192.168.1.64 *** NETID
192.168.1.65 FFF
192.168.1.126 LLL 2
192.168.1.127 *** BRODCAST
----------------------------------
192.168.1.128 *** NETID
192.168.1.129 FFF
192.168.1.190 LLL 3
192.168.1.191 *** BRODCAST
-----------------------------------
192.168.1.192 *** NETID
192.168.1.193 FFF
192.168.1.254 LLL 4
192.168.1.255 *** BRODCAST

Now, the FFF - LLL(ip range) i know are for the clients like computers, printers...etc. What about the network id and broadcast id for the each network, where and how do i use them? does the broadcast id and network id for routers? This is where i can't really understand.
What will be the subnets mask be for each of these four different networks?

Thanks and regards

jeret
hardly
Premium Member
join:2004-02-10
USA

hardly

Premium Member

This may help you with your homework.

»www.cisco.com/warp/publi ··· 01/3.pdf
H_T_R_N (banned)
join:2011-12-06
Valencia, PA

H_T_R_N (banned) to jeret

Member

to jeret
Is it finals again?

NormanS
I gave her time to steal my mind away
MVM
join:2001-02-14
San Jose, CA
TP-Link TD-8616
Asus RT-AC66U B1
Netgear FR114P

NormanS to jeret

MVM

to jeret

said by jeret See ProfileThis is where i can't really understand.
What will be the subnets mask be for each of these four different networks?

I figured that out, and I didn't even have to go to school! It involves binary and decimal math, and high order bits.
HELLFIRE
MVM
join:2009-11-25

HELLFIRE to jeret

MVM

to jeret
...With apologies to Shel Silverstein.

The Homework Machine, oh the Homework Machine,
Most perfect contraption that's ever been seen.
Just put in your homework, then drop in a dime,
Snap on the switch, and in ten seconds' time,
Your homework comes out, quick and clean as can be.
Here it is--"nine plus four?" and the answer is "three."
Three?
Oh me . . .
I guess it's not as perfect
As I thought it would be.
 

Otherwise, 2nd hardly See Profile 's link.

Regards
cramer
Premium Member
join:2007-04-10
Raleigh, NC
Westell 6100
Cisco PIX 501

cramer to jeret

Premium Member

to jeret
To answer the actual queston... "what's the purpose of network and broadcast ids" At the dawn of (internet) time, systems used an "all zero's" broadcast address. A few hours later everyone decided this was a bad idea and switched to an "all one's" broadcast address. To a modern system, the both do the same thing: link level broadcast.

Technically, the network id is for route table matches... (addr)&(mask)=(network)

(Network ID == "all zero's", Broadcast == "all one's")