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April 29th, 2024 09:10

GNS3: % Error: Interface vlan1 does not exist.

Hello there !

I ran into an issue with OS10 on GNS3 and I cannot find a solution. My setup is:

* GNS3 server 2.2.46 on Linux

* "Dell OS10 N3248TE-10.5.6.2.110" template on Qemu VM, 1 vCPU and 4096 MB RAM

When I try to assign a VLAN on an interface, I always received the error "% Error: Interface vlan1 does not exist."

For example:

OS10# configure terminal
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# switchport access vlan 5
% Error: Interface vlan1 does not exist.
OS10(conf-if-eth1/1/1)#

This happens for any VLAN I tried, even when they exists, but the error message is always the same. I also had this issue with the template on 10.5.6.0.47.

If anyone have an idea, It would help me a lot.

Regards

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April 30th, 2024 13:42

I can confirm it works on "10.5.3.2.89".

I also tried with "10.5.5.8.243" and the vlan1 interface is not present. So it looks like a bug with the N3248 image that start somewhere after the 10.5.3.2.89 version and it still present on the most recent available version.

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April 30th, 2024 12:08

Hi Darkanite,

I've seen a similar error occur on S4148 platforms and it related to restoring a config file onto a different switch profile 

https://www.dell.com/support/kbdoc/en-ie/000209950/dell-smartfabric-os10-s4148-show-vlan-command-does-not-show-vlan1 

You mention you are using an N3248TE appliance. Could you test on (a) another appliance such as an S5212 for example. To help rule out if it could be platform specific. or (b) another version of OS10 to help rule out if it could be version specific.

Also, it could be interesting to see if errors are reported when creating new vlans (before assigning interfaces to those vlans).

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April 30th, 2024 12:44

Hello @bfosullivan​,

Thank you for your answer. I have this issue with a fresh OS10 image, without any other configuration.

For (b), I tried with 10.5.6.0.47 and 10.5.6.2.110, but I can try with an older one if you want.

for (a), I tried with the "DellOS10S5248F-10.5.6.2.110-1" image and it works. I don't have any issues when I assign a VLAN to an interface.

I don't have this error message when I create the VLAN, I can do

OS10# configure terminal 
OS10(config)# interface vlan 10
OS10(conf-if-vl-10)# ip address 192.168.10.1/24
OS10(conf-if-vl-10)# end
OS10# show ip interface brief
Interface Name            IP-Address          OK       Method       Status     Protocol 
=========================================================================================
Ethernet 1/1/1             unassigned          NO       unset        up          down     
[all the other ethernet interfaces]   
Ethernet 1/1/52            unassigned          NO       unset        up          down     
Management 1/1/1           unassigned          NO       DHCP         up          down     
Vlan 10                    192.168.10.1/24     NO       manual       up          down     
OS10# 

But now I see the difference with the S5248F, there is indeed no Vlan 1 interface display here on the N3248TE. I also try to change the default vlan, but I encountered the same error.

(edited)

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53 Posts

April 30th, 2024 13:19

ok, that's very informative. So with another platform we have no problem (i.e. the S5248). So the issue is only seen on the N3248 appliance. 

I just spun up a test on my local GNS3 setup ... it's got an earlier N3248 appliance running 10.5.3.2 ... and it allowed to create a new vlan and assign to an interface without an error

So that would seem to suggest it's an issue on some versions of the N3248 appliance. Perhaps one workaround could be to test using an earlier version and see if also works for you.

In my case I ran with OS10.5.3.2.89 as it just happened to be the version on that particular GNS3 server

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