Synology NAS DSM 7, Router Cisco ISR 900 series, Cisco switches SG250

[ben.r.fr]

Hello,
I set up a network infrastructure with a box that distributes internet access.

My infrastructure consists of a master router (Cisco ISR 900 series) under the box and two switches (Cisco SG250) which manage four production VLANs.

On one of these VLANs, there is a NAS (Synology DS220+) which is accessible from the Mac finder and the Windows file explorer of the same VLAN (trunk configuration running).

The network is running and the machines referenced on the different VLANs can ping normally between VLANs.

- I'm looking for a process to make it accessible by other users' PCs in the same way, but from another VLAN.
- I am trying to configure VLANs on a DS220+ NAS.

I found a method (here) that describes the process of multiplying the interfaces of the NAS but unfortunately, following the execution, my NAS lost connection and I had to reset it to regain access. I lost connection after enabling the 802.1Q option on the LAN1 interface.
In this method, I did not create "BOND" or "LINK AGGREGATION", on the interface and just modified the LAN1 interface by activating the 802.1Q option and assigning it a VLAN ID corresponding to my general network configuration (I don't take into account DSM internal VLANs but my infrastructure = bad route I think).

- How to configure link aggregation on NAS and switches? I read this process (here) but am not sure of the execution under Cisco.

- Is this the correct way to enable the options on the NAS and switches, then after creating the "Bond", create the file copies in the terminal so that the NAS can be accessed on the other VLANs?

- Do you have a clear procedure for performing this operation correctly?

- Do you have any suggestions regarding the loss of connection during the process of configuring the LAN interfaces in the NAS? (activation of the 802.1Q option and VLAN ID assignment: which VLAN number to indicate in DSM ?)

- Does anyone know about this and can help me find a solution and a good process to multiply VLANs on the NAS?

Thank you in advance for your answers.

Ben

[pieterh]

Hi there "bonding" and "link aggregation" do not refer to VLAN's
this refers to etherchannels or  network-teaming , where multiple network interfaces are working together to provide more total bandwith
where data is distributed over available interfaces based on source-destionation pair.
so for a single filetransfer you still have bandwith of only one interface
for multiple- data-streams the network devices can use both interaces in bond/team/etherchannel....

Both a single interface or an etherchannel can be configured to work as VLAN-trunk where packets are tagged with a vlan-ID following the 802.1Q standard.

- if you configure the NAS to use 802.1Q, you need to configure the connected switchport as a vlan-trunk, or have vlans "tagged"
- if you configure the NAS to use multiple network interfaces for link-aggregation , you need to configure the switches interfaces as etherchannel
- both can be combined to use 802.1Q over link-aggregation / etherchannel

[ben.r.fr]

Hello, @pieterh,

Thank you very much for your answer.
I'll test that asap.
In waited, i success to connect a device which is in another vlan with smb protocol.

Ben

[pdenableetoavit19698]

Hi there @ben.r.fr did you find the correct solution?

@pieterhThanks for the details. Is there an ideal setup for this? Like if I have the NAS seating on VLAN 100 and want it to be accessible on VLAN 200 and VLAN 300 and interVlan is off. What would be the best approach configuration (ideally having also an agregation setup as you discussed above). Thanks!