12-12-2008 11:24 AM - edited 03-06-2019 02:57 AM
192.168.136.15
192.168.136.31
192.168.136.63
192.168.136.127
what is the brodcast address of this interface if the show int fa0/0 shows
internet address
192.168.136.200.23 / 28
can anyone explain pls
Thanks
12-12-2008 11:30 AM
Hello Octorbust
/28 means 4 bits host part a maximum of 14 hosts in the subnet
the broadcast is 1 less the next /28 subnet
the base address is made of all zeros
the addresses in the middle are for the hosts
base address 192.168.136.192
brodcast 192.168.136.207 for 192.168.136.200
usable addresses: 192.168.136.193 -192.168.136.206
base address 192.168.136.16
broadcast 192.168.136.31 for 192.168.136.23
usable addresses: 192.168.136.17-30
Hope to help
Giuseppe
12-12-2008 12:14 PM
Giuseppe
Thanks for the info
now i know that /28 is
x.x.x .1.1.1.1.0.0.0.0
and the number of host is 2^4 - 2 = 14
now how do you come up w/ 192.168.136.207
the only option to chouse from are
192.168.136.15
192.168.136.31
192.168.136.63
192.168.136.127
12-12-2008 12:18 PM
Giuseppe was confused by your question asking about an address with 5 octets. He condidered the address as 192.168.136.200. Obviously the question really meant to ask about 192.168.136.23.
HTH
Rick
12-12-2008 11:42 AM
You can use some online calculators for easy use, just in case:
http://www.tech-faq.com/calculate-broadcast-address.shtml
But to learn more about it, I would suggest you read the Jeoff Doyle Vol 1 or any relevant ciscopress books, may be CCNA !
12-12-2008 12:12 PM
I believe that the question has a mistake in it since the question asks about an address that has 5 octets:
192.168.136.200.23 / 28
Giuseppe gives an answer that is correct if you consider just the first 4 octets. Looking at the context of the question I wonder if the 200 was inserted by error and the question meant to ask about address 192.168.136.23 / 28
in which case the broadcast address would be 192.168.136.31.
HTH
Rick
12-29-2008 08:54 AM
I would like to help me with subnetting class b and A.
12-29-2008 09:08 AM
Can you post ur problem.
01-02-2009 10:22 PM
01-03-2009 09:07 PM
192.168.136.23 /28
base address = 192.168.136.16
host = 192.168.136.17 to .30
Broadcast = 192.168.136.31
Hope it helps.
Cheers!
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