Subject: Assistance Needed: Trunking an Aruba 1930 to a TP-Link TL-SG3428

Hello All,

I’ve been tasked with the challenge of trunking an Aruba 1930 switch to a TP-Link TL-SG3428 switch (not my preferred setup). I’m running into a few issues and could use your expertise.

Current Setup

• TP-Link TL-SG3428 is connected directly to the Cisco router (Service Provider).
• Aruba 1930 is connected to the TP-Link via a fiber cable.
• The Service Provider provides DHCP for VLAN 10 for one service.
• VLAN 1 (default VLAN) is configured with a custom static IP subnet for another service.

Configuration

1. Aruba 1930:
   • Configured trunking for VLANs 1 (tagged) and 10 (untagged) on interface 25.
   • Interfaces 1/0/1 - 1/0/10 are assigned to VLAN 10.
   • Interfaces 1/0/20 - 1/0/24 are assigned to VLAN 1.
2. TP-Link TL-SG3428:
   • VLANs 1 and 10 are set up on interface 1/0/25.
3. From the Aruba switch:
   • I can ping both gateways on the Cisco router.
   • I can communicate with the TP-Link switch using the custom VLAN 1 subnet.

Issue

When connected to the Aruba switch:

• Devices on VLAN 10 are unable to obtain a DHCP address from the Service Provider.

When connected directly to the TP-Link switch:

• Devices on VLAN 10 successfully receive a DHCP address and can access the internet.

Questions

1. Can the TP-Link TL-SG3428 trunk to the Aruba 1930?
2. I don’t see an explicit option for trunking on the TP-Link interface—could this be the problem?
3. Are there any specific settings I’m missing on either the Aruba or TP-Link switch to ensure proper VLAN propagation and DHCP relay for VLAN 10?

Any guidance or suggestions to resolve this would be greatly appreciated!

Thank you!