All Questions
38
questions
5
votes
2
answers
15k
views
Routing Between 2 different vlans but same subnet
I have a basic doubt understanding vlan communication.
Scenario:
Let's say a single switch and has been configured with 2 vlans (vlan 100 and vlan 200). Vlan 100 connects to lets say 192.168.100.0 ...
- 53
1
vote
1
answer
348
views
Subnetting a network for VLANs
Real beginner here, struggling with my first real life network problem, existing kit, and almost no budget.
Two departments, which have to remain private from each other, are to be linked to main ...
- 11
8
votes
3
answers
56k
views
Why can't devices in different subnets talk with each other?
I know that the layer 2 doesn't understand IP, and the broadcast domain is same.
Why can't devices talk, how does it happen?
- 430
2
votes
1
answer
743
views
VLAN vs Subnet in switch
For VLAN communication we need a layer 3 device. For internetwork communication, we also need a layer 3 device. Then why did concept of VLAN emerge?
0
votes
2
answers
202
views
Separate Subnet for Each Vlan? [duplicate]
Thoughts and Query
I was tring to understand Inter-vlan routing and realised, that each exsisting vlan in the switch is configured with a different subnet.
Is this is a good practice or is there any ...
1
vote
2
answers
399
views
Packet transfer from one host to another
I was reading about how a packet is send from one host to another. I am confused about entries that will be made in layer-3 switch routing table. Does it contain the entries for layer two switches or ...
- 11
0
votes
2
answers
255
views
IP connectivity between hosts with differing subnet masks?
For instance, if switch A has hosts with mask /25 and switch B has hosts with /26. Will a ping from Host A to host B be successful?
How does the situation change if:
Both switches are connected to a ...
- 1,237
3
votes
1
answer
3k
views
What is the point of a subnet mask on a local network?
I have a question regarding subnet masks and my understanding (or misunderstanding of them).
So when a subnet mask is used, a bitwise AND is performed using the subnet mask and the IP address(es). ...
- 231
1
vote
4
answers
4k
views
Accessing devices on different subnets using a switch
I have two devices which come up with default IP addresses:
Device 1 - 192.168.168.168 mask 255.255.255.0
Device 2 - 192.168.1.254 mask 255.255.255.0
I can commonly deduce that both the devices ...
- 123
2
votes
2
answers
297
views
What are the differences between a private network and a subnetwork?
And what are the advantages of creating subnetworks if computers are assigned different IP addresses from the same range and can communicate with each other also with switches?
- 1,541
1
vote
1
answer
632
views
VLAN and Subnet relationship with 2 offices sharing a switch
I appreciate there is an answer here already. As well as reading this and seeing this video I am still slightly confused...
If a company has 2 offices (on the same floor in close proximity of each ...
- 33
3
votes
2
answers
3k
views
VLAN tagging, routing, and general pain
To everyone who takes the time to read below, thank you very much.
I want to start this off with the very general question and then give my exact situation. I really don't understand the terminology ...
- 158
1
vote
1
answer
6k
views
Creating an isolated subnet [closed]
First off; I'm not a networking expert so forgive me if anything I ask here is blindingly obvious, or I use the terminology incorrectly :)
My company has recently moved office to a new building where ...
- 113
1
vote
1
answer
95
views
Tradeoffs of an 'access network' with 30 bit subnet mask
I've got fiber lines coming into my office, with IP setup like so:
Access Network 123.123.123.20/30
Our Router: 123.123.123.21
ISP Router: 123.123.123.22
At the moment the router is taking the fiber ...
- 11
1
vote
2
answers
365
views
Multiple IP ranges at DC, how do I set this up?
I have been tasked with a DC installation of ten servers. I myself, am a software engineer and not a network engineer (welcome to enterprise!), so I am a bit puzzled over this. I have been assigned ...
- 145