Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Attention: The Community will be in read-only mode on 12/14/2017 from 12:00 am pacific to 11:30 am.

During this time you will only be able to see content. Other interactions such as posting, replying to questions, or marking content as helpful will be disabled for few hours.

We apologize for the inconvenience while we perform important updates to the Community.

New Member

Inter-VLAN routing - Internet access out/in

Greetings,

I need to create VLAN-A - and be able to route to Internet via the Internet access router residing in VLAN-B.  I'm assuming inter-VLAN routing will accomplish this, but one other requirement is VPN access to VLAN-A via the same router in VLAN-B.

Is this possible?

Everyone's tags (2)
9 REPLIES

Re: Inter-VLAN routing - Internet access out/in

Greetings,

I need to create VLAN-A - and be able to route to Internet via the Internet access router residing in VLAN-B.  I'm assuming inter-VLAN routing will accomplish this, but one other requirement is VPN access to VLAN-A via the same router in VLAN-B.

Is this possible?

Hi,

Intervlan routing can be achive with two vlan just check out the below link for your requirement hope to help !!

http://www.cisco.com/en/US/tech/tk389/tk815/technologies_configuration_example09186a008015f17a.shtml

Remember to rate the helpful post

Ganesh.H

Cisco Employee

Re: Inter-VLAN routing - Internet access out/in

In regards to VPN, assuming you are terminating the VPN on the router, you would be able to access both VLAN A and VLAN B. Just make sure that you have route for the VPN IP Pool to point towards the router for the return traffic.

New Member

Re: Inter-VLAN routing - Internet access out/in

Thanks for your assistance.

So, I could simply create VLAN-A and set the default gateway to the LAN interface IP on the router in VLAN-B?

Hall of Fame Super Blue

Re: Inter-VLAN routing - Internet access out/in

Perhaps you could tell us what Cisco kit you have ie. which switch, which router, where the vlan is created, where it is routed ?

Jon

Cisco Employee

Re: Inter-VLAN routing - Internet access out/in

Assuming the switch supports inter vlan routing, here is what you need to configure:

1) LAN-A (192.168.1.0/24) -- (VLAN A 192.168.1.1) switch (VLAN B 192.168.2.1) -- (VLAN B 192.168.2.2) router

2) LAN-A default gateway would be 192.168.1.1

3) Switch default gateway would be 192.168.2.2

4) Router should have route for 192.168.1.0/24 network pointing to switch 192.168.2.1

New Member

Re: Inter-VLAN routing - Internet access out/in

Thanks for staying with this until I can get my head around things

So in my case, the core switch is a 6509.  The VLAN-B router is a 2800.

VLAN-A actual numbers are

10.1.6.1/24     (usable: 10.1.6.2-254)

VLAN-B actual numbers are

10.2.16.0/20     (access-router (2800) is IP: 10.2.16.2)

So what numbers would I apply per your diagram?

Cisco Employee

Re: Inter-VLAN routing - Internet access out/in

As per my diagram and using your ip addressing:

1) LAN-A (10.1.6.0/24) -- (VLAN A 10.1.6.1) switch (VLAN B 10.2.16.1) -- (VLAN B 10.2.16.2) router

2)  LAN-A default gateway would be 10.1.6.1

3) Switch default  gateway would be 10.2.16.2

4) Router should have route for10.1.6.0/24  network pointing to switch 10.2.16.1

Hope that helps.

New Member

Re: Inter-VLAN routing - Internet access out/in

OK - still a little unclear (sorry)

Per your diagram - the switch with default gateway = the router IP - is a IDF switch connecting back to the MDF-6509?

We will be deploying the IDF switch to a location in the network that will require this inter-VLAN routing - but there are other VLANS on the IDF switch that will not be using the VLAN-B router for Internet access.  We're looking at handling all special network/routing needs on the 6509 - and simply assign VLAN membership on ports on our IDF switches.

Cisco Employee

Re: Inter-VLAN routing - Internet access out/in

Can you share the network topology diagram and what exactly you are trying to add and route.

Inter VLAN routing on switch is very similar to routing on router. It is a layer 3 switch, hence it will route exactly like how router is doing routing, and you would also configure it the same way.

3553
Views
0
Helpful
9
Replies
CreatePlease to create content