Difference between subnetting & Vlan??
Answers were Sorted based on User's Feedback
Answer / vikram
subnetting is breaking of a network ... vlan is breaking a
broadcast domain. moreover subnetting is a layer 3 concept
and vlan is a layer 2 concept.
Is This Answer Correct ? | 39 Yes | 4 No |
Answer / abhishek
Concept of subnet = Network.
So Subnet is the breaking up of a network into many sub networks. . under a single IP Address domain .
Since IPv4 has a shortage of Public addresses so we do teh subnetting of a single Public IP address assigned to us by the ISP.
And this concept uses the fundas of prefix length denoted by /<number><0-32><cr>
.........
VLAN - its virtal lan. . breaking up of a single lan Segment(Switch) int varius LANS..on a single Switch/es.
.........
The difference -
Subnetting and VLAN (subneting is a Layer 3 functional concept)
whereas
Vlan is done on a layer 2 device with the help of subneting. .
for Vlan we neeed to subentting. .
For subnetting Vlan is not must. .
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / ranji2011
Hi Friends,
“Subnetting” allows you to create multiple logical networks
that exist within a single Class A, B, or C network. If you
do not subnet, you are only able to use one network from
your Class A, B, or C network, which is unrealistic.
Each data link on a network must have a unique network ID,
with every node on that link being a member of the same
network. If you break a major network (Class A, B, or C)
into smaller subnetworks, it allows you to create a network
of interconnecting subnetworks. Each data link on this
network would then have a unique network/subnetwork ID. Any
device, or gateway, connecting n networks/subnetworks has n
distinct IP addresses, one for each network / subnetwork
that it interconnects.
In order to subnet a network, extend the natural mask using
some of the bits from the host ID portion of the address to
create a subnetwork ID.
“VLANs” are a mechanism to allow network administrators to
create logical broadcast domains that can span across a
single switch or multiple switches, regardless of physical
proximity. This function is useful to reduce the size of
broadcast domains or to allow groups or users to be
logically grouped without the need to be physically located
in the same place.
Regards,
Ranji
Network engineer
netranjit@yahoo.co.in
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / dileep reddy
jitendra u r correct,but up to my knowledge
you mentioned there ,"devide the single IP". it is not
correct ..devinding the sigle network ip into diferent
network ips is called subnetting
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / sunny kumar
i have read all the answers but in my point
of view
the equal division of a network address in to multiple
network addresses with the same subnetmask is called subnetting
and the equal division of broadcast domain in to multiple
broadcast domains is called vlan......
Is This Answer Correct ? | 1 Yes | 1 No |
Answer / megadeth
guys the point is not complicating things.
the question being what is the difference between
subnetting and vlan
subnetting is done for optimum utilisation of ip addresses.
alright, further there is VLSM ,supernetting with their own
advantages.
in subnetting you just break up one big network into
various sub networks.
vlan is wherein one can establish communication between
thse networks.
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / jitendra
NIKHI My friend here is the answer for urs question
i have seen that many of the guy replyed that subnating is
the breaking of the network.but i am not agree it might be
possibe that i will be wrong but some how i am putting mine
answer here
subnating---comes for sub+network+networking==subnating
subnating is the process by which we devide the single ip
in to the mulitple ip so that we can draw our network
according to our requirment.
just try to remember what mr.chobe gives the exapmpe in our
class
he take a ip pool
192.168.100.0/24
and he teacheh us the vlsm desiging.just refre that page on
urs notebook.
here what u r seeing thet we got the single ip pool and we
dived this ip pool in diffrent ip poo.this process that is
breaking the one ip in multilple ip is caled subnating
also plz refre mine privous post.
now what is vlan
vlan is called virtual vlan
Vikram replied that vlan is used for breking the single
broadcast domain.but this is not the complete answer for
interview asspect.
as in any com ther are mainly three sec
HR
MKTG
FINCE
TECHNICAL
and more
if we want that technical departmet server can not be
accesble from the Hr so we are creating vlan
this is the exapmle of breaking the broad cast domain in
multlple broad cast domain
thanks
jitendera
i have told mine answer abut osi layer on phone last day i
am still waitng for the new repl
Is This Answer Correct ? | 8 Yes | 13 No |
Suppose we have some switch in network and we are running RSTP how much convergence time will be there if one link down
When the router runs out of buffer space, this is called ________. A. Source Quench B. Redirect C. Information Request D. Low Memory
In regards to TCP/IP, which class of address allows for the fewest valid Internet hosts? A.) D B.) E C.) Classes are not used in TCP/IP. D.) B E.) C F.) A
Identify the access-list range for an extended IP access-list? A.) 800 - 899 B.) 1 - 99 C.) 1000 - 1099 D.) 100 - 199
Which three functions are supported by connection oriented servkps? (Choose three) A. connection parameters are synchronized B. any loss or duplication of packets can be corrected C. the data packet is independently routed and the service does not guarantee the packet will be processed in order D. a data communication path is established between a requesting entity and the peer device on the remote end system
Which statement about an IP network is true? A. A broadcast source MAC address contains all zeros B. A MAC address is part of the physical layer of the OSI model C. MAC addresses are used by bridges to make forwarding decisions. IP address are used by routers. D. IP addresses allow a flat addressing scheme. MAC addresses use a hierarchical addressing scheme.
Is hub intelligent device?
What are 3 ways to provide login access to router? A.) Console B.) TFTP C.) Rlogin D.) Auxiliary Port E.) X Windows F.) Telnet
what is different between cisco router and layer 3 switch
What 2 commands verify end to end communications? A.) Trace B.) debug ip session C.) Ping D.) Route
Given an IP host address of 172.16.2.160 and a shored mask of 255.255.255.192 to which shored does the host belong? A. 172.16.2.32 B. 172.16.2.64 C. 172.16.2.96 D. 172.16.2.128 E. 172.16.2.192
What is an advantage of LAN segmentation? A.) Increases broadcasts. B.) Increases collisions. C.) Provides more protocol support. D.) Decreases broadcasts. E.) Routing protocol support.