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TOPIC: Multiple Subnets on Layer 3 Switch sharing Internet Connect

Multiple Subnets on Layer 3 Switch sharing Internet Connect 11 years 5 months ago #21273

  • ryanz
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Hi,

I've been battling to setup a network with multiple subnets on a Netgear FSM7326P Layer 3 Switch to use the Intenet Connection on one of the Subnets out through a Smoothwall out the DSL Router.

Basic network config:
Subnet-1 (VLAN-1) Ports 1-16
192.168.10.x - 255.255.255.0

Subnet-2 (VLAN-2) Ports 17-18
192.168.11.x - 255.255.255.0

Subnet-3 (VLAN-3) Ports 19-20
192.168.12.x - 255.255.255.0


DSL Router Bridged to Smoothwall FW
Red Interface: PPPOE
Green Interface: 192.168.10.1 (Port -1)
-|
Layer 3 Switch (192.168.10.254/24)
-| -| -|
VLAN-1 VLAN-2 VLAN-3

Could someone please help me with the corrects steps to follow to get this setup working on the Layer 3 Switch so that all subnets have Internet Access through subnet-1 (port-1) but so they can't access other ports or data on the various subnets.

Thanks,

Ryan





Could someone please

Re: Multiple Subnets on Layer 3 Switch sharing Internet Conn 11 years 5 months ago #21343

either build three layer 3 vlans and filter our intervlan traffic or build three layer 2 networks and put a firewall interface in each of the vlans and use the firewall interfaces as your default gateways. Which ever way you choose, you will need to filter out inter-vlan traffic.

Hi,

I've been battling to setup a network with multiple subnets on a Netgear FSM7326P Layer 3 Switch to use the Intenet Connection on one of the Subnets out through a Smoothwall out the DSL Router.

Basic network config:


Subnet-1 (VLAN-1) Ports 1-16
192.168.10.x - 255.255.255.0

Subnet-2 (VLAN-2) Ports 17-18
192.168.11.x - 255.255.255.0

Subnet-3 (VLAN-3) Ports 19-20
192.168.12.x - 255.255.255.0


DSL Router Bridged to Smoothwall FW
Red Interface: PPPOE
Green Interface: 192.168.10.1 (Port -1)
-|
Layer 3 Switch (192.168.10.254/24)
-| -| -|
VLAN-1 VLAN-2 VLAN-3

Could someone please help me with the corrects steps to follow to get this setup working on the Layer 3 Switch so that all subnets have Internet Access through subnet-1 (port-1) but so they can't access other ports or data on the various subnets.

Thanks,

Ryan





Could someone please

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