Want to Access Switch from a Different Subnet.

JKnott

@NogBadTheBad said in Want to Access Switch from a Different Subnet.:

Knew I'd seen a brand somewhere saying L2+ lol its Netgear.

That still doesn't say what L2+ is. Is it VLANs? Routing? Something else?

stephenw10

You can route between layer 3 subnets on the same layer 2 segment. You shouldn't do it.... but you can.

However the switch would need to be using whatever VIP address you add to pfSense as it's gateway in order to have a route back. It probably doesn't have that so adding the outbound NAT rule will allow it to reply.

I say any of this only because:
@aeboi80 said:

... but for the sake of learning something...is it not possible to access the web interface of the switch at all from the 10.10.0.0 network?

Steve

NogBadTheBad

@JKnott said in Want to Access Switch from a Different Subnet.:

@NogBadTheBad said in Want to Access Switch from a Different Subnet.:

Knew I'd seen a brand somewhere saying L2+ lol its Netgear.

That still doesn't say what L2+ is. Is it VLANs? Routing? Something else?

I tried to look exactly what they meant by L2+, gave up after a few mins.

Gertjan

@NogBadTheBad said in Want to Access Switch from a Different Subnet.:

L2+

Easy : ISO 2 and above (?)

pfSense4ME

Layer 2 vs Layer 3: What Makes Layer 3 Switch Different?
When comparing the Layer 2 switch to a Layer 3 switch the first thing to look at is what additional software functionality you are getting. When a switch supports Dynamic Routing Protocols, it’s no longer a strictly Layer 2 switch. Because static routing allows traffic to be routed between VLANs. In fact, the switches that add only Static Routing to their software features are considered to be somewhere between a Layer 2 and full Layer 3 switch. Sometimes called Layer 2+ or Layer 3 Lite. Unlike Layer 2+ switch, Layer 3 switch is Dynamic Routing ,which are used to link large networks together and share routing tables between them. They can also allow for dynamic routing of multicast traffic on the network.

Google search:
layer 2 vs "layer 2+" switch

Source:

*Sorry for the pic but when I tried to input the url as a link or plain text it kept getting flagged as spam. If the link / pic is not acceptable (because it voilates a rule - apologies) please remove or correct.

aeboi80

@Gertjan Yes

aeboi80

@johnpoz said in Want to Access Switch from a Different Subnet.:

WT

This is the switch - https://www.tp-link.com/us/business-networking/smart-switch/t1600g-28ps/

stephenw10

Mmm, so static routing between segments/subnets. That's layer 3 in my opinion.
I guess I can see why they wanted some in-between label.

Steve

johnpoz

Hehehe - dude really? There is layer 2, and then there is layer 3 ;) There is no layer 2+ heheheh

These stupid marketing nonsense terms.. If you want to call it layer 3 lite would be better than layer 2+

Where is this drawing of your network? Do you need some color+ crayons to use? ;)

While it is technically feasible to route multiple layer 3 on the same layer 2 - it would be the technical term BORKED if you actually do something like that ;)

Derelict

A Layer 2+ switch generally has things like DHCP snooping but can't actually be configured as a router like a Layer 3 switch.

johnpoz

So a smart/managed layer 2 then ;)

BTW, if your going to route and your wanting to access something on your downstream from a IP that is on your transit network you are always going to run into asymmetrical problems..

If you want to route to other networks on your downstream, then that needs to be connected to your upstream router via a transit network.. If you going to want to get to it from devices on your transit network.. Then you need to host route on them, or you run into the above asymmetrical problem.

Connect your upstream to your downstream via transit network (no hosts on it) and your asymmetrical issues are gone

Also if you created your SVI on the L2 that your 10 network is on, then its IP would be in the 10 nework.. If you created put the svi on a different L2, then you need to route it via a transit or host routes or your going to have the asymmetrical problems.