SD Switch Inter-VLAN Routing

Design Lab
1

My network consists on 1x Balance 210 (FW 8.2.0) and 2x SD Switch Rugged 24 (FW 1.3.0).

Switch A Port 1 is connected to the Balance 210 on LAN 1
Switch B Port 1 is connected to the Balance 210 on LAN 2

There are 4 VLANs - Untagged, VLAN10, VLAN20, VLAN30
Inter VLAN routing is configured on the Balance 210 (Network - LAN - Network Settings - Inter-VLAN routing)

Balance 210 Untagged VLAN IP = 192.168.0.1
Balance 210 VLAN 10 IP = 192.168.10.1
Balance 210 VLAN 20 IP = 192.168.20.1
Balance 210 VLAN 30 IP = 192.168.30.1
Switch A Untagged VLAN IP = 192.168.0.2
Switch B Untagged VLAN IP = 192.168.0.3

My understanding is that;
-Data from a device on VLAN10 on Switch A being sent to a device on VLAN20 on Switch A would be sent up the trunk cable connection between Switch A Port 1 and Balance 210 LAN 1 where it will be routed from VLAN10 to VLAN20 and then sent back down the same cable to Switch A where it will be passed onto the device on VLAN20.
-Data from a device on VLAN10 on Switch A being sent to a device on VLAN20 on Switch B would be sent up the trunk cable connection between Switch A Port 1 and the Balance 210 LAN1 where it will be routed from VLAN10 to VLAN20 and then sent for the trunk cable to Switch B on Balance 210 LAN2 where it will be passed onto the device on VLAN20.

My questions are this:
On the Switch under Configure - Network Settings - LAN - Inter-VLAN Routing, if this is configured, can data be routed between VLANS on the switch without forwarding the data onto the Balance 210 ? If the device does not exist in a VLAN on that switch is the default action to pass this up to the Balance 210 because it cannot find the destination MAC in its internal routing table? Would I need to enter a value in the Optional IP address field and/or enter a value for Inter-Vlan Routing IP address?

Ultimately I would like to reduce the traffic passing through the Balance 210 as much as possible so that only data that is going external from the network is passed onto it. Any high bandwidth/video data should be passed between the switches and/or VLANS without going through the Balance 210. I would therefore like to utilise the SFP+ ports between the 2 SD Switches and use a DAC cable to connect them. Will this cause a loop(triangle)? Will the routing aspect of the switches realise that it is one less hop to go via the SFP+ rather than Port1 and through the balance 210? Is there any special configuration that needs to happen to allow this to happen.

Thanks for your help

Tom

2

We have almost the same scenario. hope someone give us idea on this

3

Routing is a layer three function, so for that to work you would have to give the switch an IP address in each vlan, and use that IP as the gateway address for the vlan.

4

Hello, TORO…
Looking at your scenario… There is a missing point…
Switch A don’t know other networks, just the default BPL-210 AND the same happening with switch B. Just connecting 192.168.0.2 to 192.168.0.3 don’t tell to both switches their internal VLAN networks ip address. Because this… when they receive a ARP request, they send it to BPL-210. Both switches only know this default route address.

I don’t have the Peplink switch at my LAB, but I have another vendors L3 switches.

My question… To better understand your topology.
Can SW-A ping SW-B, from 192.168.0.2 to 192.168.0.3 ?
Can SW-B ping SW-A, from 192.168.0.3 to 192.168.0.2 ?

Can those Peplink switches allows you to add network route?

Do you need rules to filter some traffic between VLAN 10 and VLAN 20 ?

You need to add in each swith a destination network address interconection ip address.

okay?

something like:

  • SW-A (vlan 30 SW-B 192.168.30.0/240 gw 192.168.0.3 (eth of the SW-B)
  • SW-B (vlan 20 SW-A 192.168.20.0/24 gw 192.168.0.2 (eth of the SW-A)

Regards,