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January 25th, 2021 18:00
Single N4064F Inter-VLAN Routing
n4064Hello,
I have been going crazy trying to get inter-VLAN routing to work on the Dell N4064F Layer-3 switch. I will summarize my desired network below:
VLAN 1 (Default - will connect to the internet through a firewall)
IP Address: 10.0.1.0 255.255.255.0
VLAN 20 (Workstations)
IP Address: 10.0.20.0 255.255.255.0
VLAN 30 (Server)
IP Address: 10.0.30.0 255.255.255.0
I would like VLAN 20 workstations to be able to talk to the server on VLAN 30, as well as connect to VLAN 1 for internet. I would like VLAN 30 to talk to VLAN 20, but not VLAN1 or the internet in general.
What I have tried:
I have set up all three VLANs and can ping their respective gateways from workstations on each VLAN, but not between.
Ex. #1: Computer with address 10.0.20.10 255.255.255.0 can ping 10.0.20.1, but not 10.0.30.1 or 10.0.1.1
Ex. #2: Computer with address 10.0.30.10 255.255.255.0 can ping 10.0.30.1, but not 10.0.20.1 or 10.0.1.1
Ex. #3: Computer with address 10.0.1.10 255.255.255.0 can ping 10.0.1.1, but not 10.0.20.1 or 10.0.30.1
I have ensured that routing is enabled on all of the VLANs and have tried using static routes to no avail. The only way I have achieved communication between the VLANs is when setting the client computer's subnet mask to 255.255.0.0.
Ex. #4: Client computer with IP 10.0.20.10 255.255.0.0 can ping 10.0.30.1(this network has a mask of 255.255.255.0).
In my current understanding, this larger subnet on the client machine should not be necessary at all, in fact it defeats the whole point of this VLAN topology. If all of the client computers were on this subnet, broadcast traffic can move across the VLANs to each computer with 255.255.0.0 (please correct me if I am wrong here).
The Layer-3 routing capabilities of this switch should allow:
A computer on VLAN 20 with an IP of 10.0.20.10 255.255.255.0 talk to a computer on VLAN 30 with an IP of 10.0.30.10 255.255.255.0
It would be greatly appreciated if someone could assist me or point me to a working configuration that allows inter-VLAN communication using the Dell N4064F switch.
Thank you,
David
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DELL-Erman O
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January 26th, 2021 06:00
Hello,
As far as I understand, you don't use an external router and I can see you already have assigned IP addresses to Vlan's. Have you enabled global command # ip routing, if you forget it switch won't build a routing table. A Switch Virtual Interface (SVI) is a logical interface configured on a layer 3 Switch where SVI has no physical interface and provides Layer 3 processing of packets from all switch ports associated with the VLAN. I'm not sure if an inter-vlan can be capable on the same switch other than SVI.
For an Switch Virtual Interface to go to up / up and be added to the routing table (# show ip interface brief), the VLAN for the SVI must be created, an IP address must be assigned, and at least one interface must support it ( trunk or access)
Also I found a video it may help https://dell.to/3iLPcDN;
Let us know if this helps!