Ggthjy

Doomsday-clock for my fantasy planet

Is Fable (1996) connected in any way to the Fable franchise from Lionhead Studios?

Where else does the Shulchan Aruch quote an authority by name?

How can I fix this gap between bookcases I made?

Why do UK politicians seemingly ignore opinion polls on Brexit?

Does the average primeness of natural numbers tend to zero?

Where to refill my bottle in India?

Is this food a bread or a loaf?

What is the offset in a seaplane's hull?

Domain expired, GoDaddy holds it and is asking more money

Was there ever an axiom rendered a theorem?

"listening to me about as much as you're listening to this pole here"

What happens when a metallic dragon and a chromatic dragon mate?

Crop image to path created in TikZ?

Hosting Wordpress in a EC2 Load Balanced Instance

Add an angle to a sphere

Why airport relocation isn't done gradually?

How to move the player while also allowing forces to affect it

Are objects structures and/or vice versa?

How would photo IDs work for shapeshifters?

Patience, young "Padovan"

Need help identifying/translating a plaque in Tangier, Morocco

"My colleague's body is amazing"

Manga about a female worker who got dragged into another world together with this high school girl and she was just told she's not needed anymore

Do VLANs within a subnet need to have their own subnet for router on a stick?

Best Practice(?): 2 publicly available subnet VLANs and inter VLAN routingSplitting up a flat network into VLANsI have two vlans on the same router that can't ping each otherVLans Cisco Packet tracerMultiple VLANs under one subnet (for traffic control)Router requirements for VLANSBest practice for connecting router to switch? (re: VLANs and multiple ports)Help with Native Vlan mismatch errorHow to turn off auto-routing between interfaces in same router ? is there any command for that?Packet-Tracer multiple IPs for a PC

2

I have been creating a network lab in packet tracer for practice. I have 3 vlans in subnet A and I am trying to configure router on a stick at gig6/0 on the bottom left of the image. Do I need to create a subnet for each VLAN in order for the router on a stick gateway to work?

router vlan subnet trunk gateway

share|improve this question

edited 2 days ago

Cown

6,91131031

asked 2 days ago

Jon StinnettJon Stinnett

111

New contributor

Jon Stinnett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

2

I have been creating a network lab in packet tracer for practice. I have 3 vlans in subnet A and I am trying to configure router on a stick at gig6/0 on the bottom left of the image. Do I need to create a subnet for each VLAN in order for the router on a stick gateway to work?

router vlan subnet trunk gateway

share|improve this question

edited 2 days ago

Cown

6,91131031

asked 2 days ago

Jon StinnettJon Stinnett

111

New contributor

Jon Stinnett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

I have been creating a network lab in packet tracer for practice. I have 3 vlans in subnet A and I am trying to configure router on a stick at gig6/0 on the bottom left of the image. Do I need to create a subnet for each VLAN in order for the router on a stick gateway to work?

router vlan subnet trunk gateway

share|improve this question

edited 2 days ago

Cown

6,91131031

asked 2 days ago

Jon StinnettJon Stinnett

111

New contributor

Jon Stinnett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 2 days ago

Cown

6,91131031

asked 2 days ago

Jon StinnettJon Stinnett

111

New contributor

Jon Stinnett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 2 days ago

Cown

6,91131031

asked 2 days ago

Jon StinnettJon Stinnett

111

New contributor

Jon Stinnett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 2 days ago

Cown

6,91131031

edited 2 days ago

Cown

6,91131031

asked 2 days ago

Jon StinnettJon Stinnett

111

New contributor

Jon Stinnett is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 2 days ago

Jon StinnettJon Stinnett

111

2 Answers
2

active

oldest

votes

6

I'm not understanding your exact problem because you don't provide enough detail but maybe this helps:

With rare exceptions, an IP subnet is mapped to a VLAN = broadcast domain = layer-2 network on a 1:1 basis.

You can run multiple IP subnets inside a single VLAN but they need a router to communicate with each other. Most often this setup doesn't make too much sense.

You can't run a single IP subnet across multiple VLANs though (without elaborate workarounds). Nodes in the same subnet expect to be able to talk to each other on a common layer-2 network = VLAN = broadcast domain.

So, your "VLANs within a subnet" can only work when you've split that subnet into sub-subnets properly and set up the router as gateway in between. A router on a stick is a router forwarding between VLAN subinterfaces on a single physical interface. Each subinterface needs to connect to one of the desired VLANs, so the link needs to be a VLAN trunk on both the switch and the router side.

share|improve this answer

edited 2 days ago

answered 2 days ago

Zac67Zac67

32.7k22164

add a comment | 

4

Just to amplify on Zac’s answer: you have one subnet per vlan and vice versa. At the CCNA level, you can ignore the rare exceptions. The router on a stick has an (sub)interface in each subnet. Therefore all VLANs must be trunked to the router.

share|improve this answer

edited 2 days ago

Cown

6,91131031

answered 2 days ago

Ron TrunkRon Trunk

39.6k33780

add a comment | 

Your Answer

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "496"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});

Jon Stinnett is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fnetworkengineering.stackexchange.com%2fquestions%2f58283%2fdo-vlans-within-a-subnet-need-to-have-their-own-subnet-for-router-on-a-stick%23new-answer', 'question_page');
}
);

Post as a guest

Name

Email

Required, but never shown

6

I'm not understanding your exact problem because you don't provide enough detail but maybe this helps:

With rare exceptions, an IP subnet is mapped to a VLAN = broadcast domain = layer-2 network on a 1:1 basis.

You can run multiple IP subnets inside a single VLAN but they need a router to communicate with each other. Most often this setup doesn't make too much sense.

You can't run a single IP subnet across multiple VLANs though (without elaborate workarounds). Nodes in the same subnet expect to be able to talk to each other on a common layer-2 network = VLAN = broadcast domain.

So, your "VLANs within a subnet" can only work when you've split that subnet into sub-subnets properly and set up the router as gateway in between. A router on a stick is a router forwarding between VLAN subinterfaces on a single physical interface. Each subinterface needs to connect to one of the desired VLANs, so the link needs to be a VLAN trunk on both the switch and the router side.

share|improve this answer

edited 2 days ago

answered 2 days ago

Zac67Zac67

32.7k22164

add a comment | 

6

I'm not understanding your exact problem because you don't provide enough detail but maybe this helps:

With rare exceptions, an IP subnet is mapped to a VLAN = broadcast domain = layer-2 network on a 1:1 basis.

You can run multiple IP subnets inside a single VLAN but they need a router to communicate with each other. Most often this setup doesn't make too much sense.

You can't run a single IP subnet across multiple VLANs though (without elaborate workarounds). Nodes in the same subnet expect to be able to talk to each other on a common layer-2 network = VLAN = broadcast domain.

So, your "VLANs within a subnet" can only work when you've split that subnet into sub-subnets properly and set up the router as gateway in between. A router on a stick is a router forwarding between VLAN subinterfaces on a single physical interface. Each subinterface needs to connect to one of the desired VLANs, so the link needs to be a VLAN trunk on both the switch and the router side.

share|improve this answer

edited 2 days ago

answered 2 days ago

Zac67Zac67

32.7k22164

add a comment | 

I'm not understanding your exact problem because you don't provide enough detail but maybe this helps:

With rare exceptions, an IP subnet is mapped to a VLAN = broadcast domain = layer-2 network on a 1:1 basis.

You can run multiple IP subnets inside a single VLAN but they need a router to communicate with each other. Most often this setup doesn't make too much sense.

You can't run a single IP subnet across multiple VLANs though (without elaborate workarounds). Nodes in the same subnet expect to be able to talk to each other on a common layer-2 network = VLAN = broadcast domain.

So, your "VLANs within a subnet" can only work when you've split that subnet into sub-subnets properly and set up the router as gateway in between. A router on a stick is a router forwarding between VLAN subinterfaces on a single physical interface. Each subinterface needs to connect to one of the desired VLANs, so the link needs to be a VLAN trunk on both the switch and the router side.

share|improve this answer

edited 2 days ago

answered 2 days ago

Zac67Zac67

32.7k22164

share|improve this answer

edited 2 days ago

answered 2 days ago

Zac67Zac67

32.7k22164

answered 2 days ago

Zac67Zac67

32.7k22164

answered 2 days ago

Zac67Zac67

32.7k22164

4

Just to amplify on Zac’s answer: you have one subnet per vlan and vice versa. At the CCNA level, you can ignore the rare exceptions. The router on a stick has an (sub)interface in each subnet. Therefore all VLANs must be trunked to the router.

share|improve this answer

edited 2 days ago

Cown

6,91131031

answered 2 days ago

Ron TrunkRon Trunk

39.6k33780

add a comment | 

4

Just to amplify on Zac’s answer: you have one subnet per vlan and vice versa. At the CCNA level, you can ignore the rare exceptions. The router on a stick has an (sub)interface in each subnet. Therefore all VLANs must be trunked to the router.

share|improve this answer

edited 2 days ago

Cown

6,91131031

answered 2 days ago

Ron TrunkRon Trunk

39.6k33780

add a comment | 

Just to amplify on Zac’s answer: you have one subnet per vlan and vice versa. At the CCNA level, you can ignore the rare exceptions. The router on a stick has an (sub)interface in each subnet. Therefore all VLANs must be trunked to the router.

share|improve this answer

edited 2 days ago

Cown

6,91131031

answered 2 days ago

Ron TrunkRon Trunk

39.6k33780

share|improve this answer

edited 2 days ago

Cown

6,91131031

answered 2 days ago

Ron TrunkRon Trunk

39.6k33780

edited 2 days ago

Cown

6,91131031

edited 2 days ago

Cown

6,91131031

answered 2 days ago

Ron TrunkRon Trunk

39.6k33780

answered 2 days ago

Ron TrunkRon Trunk

39.6k33780