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No Internet Access to VLANs


Greetings.. Dear Friends, We created two VLANs in X440. How could I get the Internet access to all vlans? Right now, the internet is getting to a specific vlan members like, if we connected the internet in a port that belongs to vlan1, then all the members in that vlan would get the internet. No other vlan can access the internet,. I have enabled ipforwarding in all vlans. Thanks in advance..

9 replies

Userlevel 7
please post the output of "show vlan"
Ron wrote:

please post the output of "show vlan"

* X440-24t.19 # show vlan ----------------------------------------------------------------------------------------------- Name VID Protocol Addr Flags Proto Ports Virtual Active router /Total ----------------------------------------------------------------------------------------------- Default 1 192.168.2.5 /24 -f----------T---------------- ANY 1 /8 VR-Default Mgmt 4095 ------------------------------------------------- ANY 0 /1 VR-Mgmt test1 4094 192.168.10.1 /24 -f--------------------------- ANY 1 /8 VR-Default -----------------------------------------------------------------------------------------------
Ron wrote:

please post the output of "show vlan"

IP Address 192.168.2.2 is the gateway. I have given the ip range to default vlan and set 192.168.2.2 as default route.
Userlevel 3
Ron wrote:

please post the output of "show vlan"

Hi,

I assume that hosts in vlan test1 have defalut gw 192.168.10.1

1) Did you configure on your router (192.168.2.2) route to 192.168.10.0/24 network via 192.168.2.5 ?

2) Did you configure NAT for network 192.168.10.0/24 on you router?

--
Jarek
Ron wrote:

please post the output of "show vlan"

Now, I got the internet access to the vlans. I configured private-vlan and got the internet access.
Ron wrote:

please post the output of "show vlan"

Could you please provide me the basic NAT commands of Extreme x440. I need to change the IP range of the clients. now I am getting same IP range for both VLANs.
Userlevel 3
Ron wrote:

please post the output of "show vlan"

Extreme switches (EXOS) do not have NAT.
They have routing, but all depends on hardware and license.

You should do NAT on your router.

--
Jarek
Ron wrote:

please post the output of "show vlan"

So. How could I change the ip range of vlans?
Userlevel 3
Ron wrote:

please post the output of "show vlan"

Why you want to change IP ranges ?
Could you be more specific, what do you want to do ?
Any network diagram, etc ?

Are you trying to do something like bellow ?

For example, you have 4 departments and you create 4 vlans + you have one router then create vlan to router.

Vlan lan1 192.168.10.0/24, vlan lan2 - 192.168.11.0/24, vlan lan3 - 192.168.12.0/24, vlan lan4 - 192.168.13.0/24, vlan toRouter 192.168.9.0/30

Network ASCII
/====> vlan lan1
Router (192.168.9.1/30) <===> (192.168.9.2/30) X440 | ====> vlan lan2
\ ====> vlan lan3
\===> vlan lan4

On X440 you set default route to 192.168.9.1 and enable ipforwarding on this 5 vlans

On the router you set route to network 192.168.10.0/24 via 192.168.9.2 and so on for rest of lan IP's. You configure also NAT for this networks on the router.

--
Jarek

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