Wired Intelligent Edge

Is 256 really the hard limit of VLANs? I set the command max-vlans to 1024 and the running config confirms 1024, however when i try to vlan 1000-1499 it fails saying there is max of 256 VLANs.

 

Is it a hard limit? 

 

I find it ironic on the lower 1950s I'm able to add more than 256 VLANs.

Hi,

 

I think, yes it is a hard limit

a campus switch don't really need more often of 1K vlans... (or it is a bad design !)

I don’t need the campus switch to route more than 256 VLANs, I have routers for that. I need the switch to support more than 256 VLANs at Layer2. The 2500 series and even the 1950s support that (as layer 2 switches)!

The reason I got the 2930F was to do stacking which is not support in the 2500. In the 2930F data sheet:
https://www.arubanetworks.com/assets/ds/DS_2930FSwitchSeries.pdf

It says the following:
Layer 2 switching
• VLAN support and tagging support IEEE 802.1Q (4,094 VLAN IDs) and 2K VLANs simultaneously

So how can I tag my ports with more than 256 VLANs when it says Layer2 can handle 2000 VLANs?

Perry

with 2930F(-8G) and firmware 16.08

 

it is possible to set max-vlans to 2048

 

MAQ-2930F(config)# max-vlans 
 <16-2048>             Enter an integer number.
MAQ-2930F(config)# show vlan 

 Status and Counters - VLAN Information

  Maximum VLANs to support : 2048                 
  Primary VLAN : DEFAULT_VLAN
  Management VLAN :             

Yes I noticed that and I tried to set that to 1024. However when I try to add more than 256 VLANs I get an error message as I mentioned in my original post.

Perry

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@pstatho wrote:
Yes I noticed that and I tried to set that to 1024. However when I try to add more than 256 VLANs I get an error message as I mentioned in my original post.

Perry

---

May be a bug... open a issue to the TAC

max-vlans requires switch to reboot...did you reboot it yet?

Yes I did, but I'm in a stack so perhaps one of the members didn't get a proper reboot? I'm pretty sure I did both memembers, but I will try again to be sure. I've also opened a case with HPE.

Perry

So it seems that I needed to power cycle the switches. Previously I did a reload command from the CLI, which rebooted both switches in the stack. 

 

After power cycling the switches the max-vlan setting was applied.

 

Thanks all!

I want to thank you for this thread.  I ran into the same issue.   Regardless what the switch is designated for.   I run port to port VLAN isolation usually on HP1950, HP1920s, power edge, ect. 

Example: First switch port 1/0/1 untagged vlan 1101, port 1/0/2 1102, with a trunk uplink.  Second switch port 1/0/1 untagged vlan 1201, ect. 
This allows me to isolate ports via the router.  Then i can see all my devices in one place via MAC/DHCP.  

Solution for me was both:  below and then a reboot.  

MAQ-2930F(config)# max-vlans 
 <16-2048>             Enter an integer number.
MAQ-2930F(config)# show vlan 

 Status and Counters - VLAN Information

  Maximum VLANs to support : 2048                 
  Primary VLAN : DEFAULT_VLAN
  Management VLAN :          

Original Message:
Sent: Apr 05, 2019 09:23 PM
From: Perry Stathopoulos
Subject: 2930F Max VLANs

Is 256 really the hard limit of VLANs? I set the command max-vlans to 1024 and the running config confirms 1024, however when i try to vlan 1000-1499 it fails saying there is max of 256 VLANs.

 

Is it a hard limit? 

 

I find it ironic on the lower 1950s I'm able to add more than 256 VLANs.