Interested to Buy Any Domain ? << Click Here >> for more details...
What is VLSM? how to Calculate VLSM? where it is use and
why?
- 13 Answers
- 48319 Views
- I also Faced
- E-Mail Answers
Answer Posted / hargie
VLSM (variable length subnet mask) is ipv6 classless ip
addressing. Use to subnet an already subnettted ip adress.
how to calculate vlsm?
first if you have a topology you must determine which
network have the greatest number of host. then assign it as
the first subnet.
ex: ISP wan = 20 Host
IP AD=192.168.1.0
Second you must have a knowledge about octet table...
octet table
1 2 3 4 5 6 7 8 1stoctet
9 10 11 12 13 14 15 16 2ndoctet
17 18 19 20 21 22 23 24 3rdoctet
25 26 27 28 29 30 31 32 4thoctet
128 64 32 16 8 4 2 1 delta
128 192 224 240 248 252 254 255 SUBNET
- MASK
USING octet table u can determine the usable ip adresses.
isp wan have a 20 host so its means
20host delta=32 subnet mask=255.255.255.224
ADD THE DELTA=32 IN THE IP ADRESS :
192.168.1.0
+ 64
------------
192.168.1.64
configuration:
192.168.1.0/27
192.168.1.0/27-NEtwork address
192.168.1.1/27-1ST USABLE IP ADDRESS
.2/27-2ND USABLE ADDRESS
.62/27-LAST USABLE IP ADRESS
BEFORE THE 192.168.1.64, 192.168.1.63 IS THE BROADACST ADRESS.
SO,
192.168.1.63/27-BROADCAST ADRESS
THEN
192.168.1.64.0 IS A NEW IP ADRESS, BUT WE DON'T NEED THIS!!!
SO FROM 192.168.1.1 TO 192.168.1.62, YOU CAN GET ANY IP
ADRESSES FROM THAT,
OK
| Is This Answer Correct ? | 29 Yes | 16 No |
Post New Answer View All Answers
What will be the prefix length of 224 in vlsm?
What is the difference between lan, man, and wan?
Which peer authentication method and which ipsec mode is used to connect to the branch locations? (Choose two)
Define network?
Frame relay technology works on which layer of osi model?
What is quality of ipv6?
What does the meaning of interface 0/0?
When we use extended access-list?
What is the meaning of synchronization?
Mention what is the difference between dynamic ip and static ip addressing?
What is difference between switch & hub?
What is DHCP stand for?
When does network congestion occur?
Tell me when we use standard access-list?
If line down and protocol also down; in this case which layer move problem?
