2.5 Gbps networking question

[KWguy]

If I understand this correctly, I can connect my two TNAS devices together via the ethernet ports and in doing so, both devices will utilize the 2.5 Gbps speeds for transfering between each other. Is this a correct understanding?

1Gbps Switch -> LAN #1 F4-423 -> LAN #2 F4-423 -> LAN #1 F4-223

My hope is by doing it this way, when I backup from the F4-423 to the F4-223 it will do so faster then if they are both connected to my 1Gbps network.

[KWguy]

Okay, so I tried connecting these two TNAS devices together via their 2.5G ports and it didn't work.

Here is how I connected them together:

1Gbps Switch -> LAN #1 F4-423 -> LAN #2 F4-423 -> LAN #2 F4-223

When I look at the interface settings for LAN #2 F4-423 it shows no IP address.

Here is a screenshot link of LAN #2 F4-423:
https://imgur.com/a/1EfHyoU

It shows connected at 2.5G, but no IP address.

With no throughput to LAN #2 F4-223, I have no access to this TNAS configured this way.

[TMzethar]

You need to separately set static IPs for LAN2 of two devices.
For example:
F4-423 LAN2: 10.10.10.4
F4-223 LAN2: 10.10.10.2
Then you can access each other through IP.

[KWguy]

You need to separately set static IPs for LAN2 of two devices.
For example:
F4-423 LAN2: 10.10.10.4
F4-223 LAN2: 10.10.10.2
Then you can access each other through IP.

I made the change you suggested but it did not fix the problem. I still can not access each NAS when they are connected to each other via their 2.5G LAD ports.

The only way I can see and access the two NAS devices is when each is connected to the network 1Gbps switch.

Can we set up a remote session?

[TMzethar]

Please confirm, how did you access each other through LAN2 of TNASs?
Generally speaking, of course, you cannot directly access two TNAS through your PC because they are not connected to your switch. However, you can connect to the IP of another TNAS when setting up remote TNAS backup tasks or mounting NFS/SMB.

[KWguy]

I connected each TNAS directly to the 1G switch by their LAN 2 connections, and set the IP on each as as manual from DHCP.
Then I reconnected each TNAS to each other as outlined earlier.

I am not sure what you mean by this statement:

However, you can connect to the IP of another TNAS when setting up remote TNAS backup tasks or mounting NFS/SMB.

My intention is to access each TNAS connected to each other at 2.5G speed instead of 1G speed through my switch. My understanding is backups from F4-423 to F4-223 will be faster via 2.5G and I will still be able to connect normaly to each TNAS via the desktop interface.

I have my backup setup using rsync.

[Gremlin]

My suspicion is that you have a routing conflict.

<conjecture>
One port of each nas is connected to your switch and allocated an ip address on your local lan (probably) by dhcp. This will give a default gateway (normally) on your router. [to get to the internet and lan]
The second port on each nas is directly connected to the other". But, do they know the 'correct' route to take?
The computer routines don't specifically how to get from A to B but will flow through the designated gateway. There are options in NAS to make specific ports "the default gateway" but then you may have difficulties with your desktop connections.
</conjecture>

Hopefully, someone at TM will be able to advise you on routing in your particular setup, BUT:

Would it not be easier to get a faster switch?

*Back 'in the day' [which for me is circa 1970 ] directly connected ports would need a cross-over cable, but that should not be a requirement today.

[KWguy]

{L_BUTTON_AT}Gremlin

Thanks for your comments, I tend to agree with your supposition.

Yes, it would be easier for me to buy a 2.5G switch, but with these TNAS devices each having two LAN ports, I assumed I could connect them together that way, and save the money from buying the 2.5G swtich. (unlike 1G switches, 2.5G switches are crazy expensive).

The network interface settings on each TNAS have a checkbox to sepcify gateway direction for each LAN port, I will double check these are properly configured.

Yes, I hope the good folks at TM can help me solve this soon.

[KWguy]

{L_BUTTON_AT}TMzethar

Here are screen shots of F4-423 LAN #2 port. It does not show a gateway. https://imgur.com/zxL5Vq1 Here are screen shots of F4-423 LAN #2 port settings (gateway is specified): https://imgur.com/5RpzYRD Can I have a remote sesssion with someone to help figure this out?

[Gremlin]

OK, maybe I have it. Your LAN1 and LAN 2 are still both on the same (192.168.7.nnn) network segment.

The 2 LAN ports that are connected to each other should have a totally separate LAN segment (eg 192.168.200.nnn or the 10.10.10.nnn as suggested earlier) so that their traffic is isolated from your main lan traffic. (Must confess, I thought you had already done that )