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Forum Discussion
M4100-26G changes VLAN membership after reboot
Hi there, hoping someone can help or confirm this is an issue. I recently got my first M4100-26G and updated to the latest firmware 10.0.2.20, the unit and features work as expected however when I s...
Hi exocomp
Welcome to the Community!
I can confirm we don't show outstanding issues with firmware 10.0.2.20.
It is normal the time resets back to the default when you reboot, only SNTP time servers and time zone configuration are kept in startup-config, not the latest time before reset. After reboot, SNTP sync will happen and your M4100-26G will show correct time again.
Ports VLAN configuration should be kept intact after a reboot, provided the configuration was saved. Are you sure you actually save the configuration (so basically write the running-config into startup-config)? Are you using Web interface (GUI) or the command line (CLI)?
- Web GUI: Please refer to the M4100 Web User Manual page 14, table 1. On each page, there is a button APPLY. This APPLY button sends the updated configuration to the switch. Configuration changes take effect immediately, but in fact you are writing into the running-config. Running-config is volatile until you SAVE it into startup-config. To do that, please refer to page 405 and select Maintenance -> Save Config -> Save Configuration.
- CLI: Please refer to the M4100 CLI Manual page 371. The command save will permanently write running-config into NVRAM, in fact into the startup-config file.
(M4100) >enable
(M4100) #save
Let us know if this helps!
Regards,
Hi LaurentMa,
Thanks for replying and confirming it is not a known issue with the firmware. I've been following the manual and I did see the section on saving configurations on page 405. I'm following the steps from the manual using the Web GUI, I put a tick mark next to:
"Saving all applied changes will cause all changes to configurations panels that were applied, but not saved, to be saved, thus retaining their new values across a system reboot."
I then click on Apply and get confirmation dialog box confirming it is ok. I then wait 5 minutes and login again to check the VLAN Memberships and it is not what I saved.
How do you think I should proceed next, keep in mind I'm a new user of the switch, so there is a chance I might be doing something wrong but as far as I can tell I'm following the steps acurately.
Thanks,
J
To add to my previous response. Here is an example:
Before Reboot
After Reboot
NOTE: See how VLAN 1 and 50 were added, why did this happen ?
Thanks,
J
Hi exocomp
There must be conflicting configuration between Switching\VLAN\Advanced\VLAN Trunking Configuration you are showing in screenshots above, and Switching\VLAN\Advanced\VLAN Membership next page in the menu on the left. VLAN Membership data most likely took precedence when you save your configuration.
You can download your configuration file in Maintenance\Download to control the running-config: for interface 0/1, you should look at the switchport commands (Trunk or General) or the conflictual combination of both. In order to fix this, I would recommend you clear all configuration in Switching\VLAN\Advanced\VLAN Membership?
Please let me know. If you want, you can also copy and paste the VLAN/port information from your dowloaded configuation file in this thread?
Regards,
Hi Laurent,
>>You can download your configuration file in Maintenance\Download
In order for me to get the switch configuration file I have to go to the upload section not download, it is kind of confusing, so I guess you meant Configuration/Upload not download. Anyway, as far as I can tell VLAN membership is setup correctly, please review below and let me know.
Here is the config file:
!Current Configuration: ! !System Description "M4100-26G ProSafe 24-port Gigabit L2+ Intelligent Edge Managed Switch, 10.0.2.20, B1.0.1.1" !System Software Version "10.0.2.20" !System Up Time "0 days 0 hrs 17 mins 7 secs" !Additional Packages QOS,IPv6 Management,Routing !Current SNTP Synchronized Time: SNTP Client Mode Is Disabled ! vlan database vlan 50,100,200,300 vlan routing 1 1 vlan association subnet 10.0.0.0 255.255.255.0 300 vlan association subnet 172.16.0.0 255.255.255.0 100 vlan association subnet 172.16.1.0 255.255.255.0 200 exit configure no sntp client mode time-range line console exit line telnet exit line ssh exit ! interface 0/1 switchport mode trunk switchport trunk allowed vlan 1,50,100,200,300 vlan acceptframe vlanonly vlan ingressfilter exit interface 0/2 exit interface 0/3 switchport mode trunk switchport trunk allowed vlan 1,50,100,200,300 vlan acceptframe vlanonly vlan ingressfilter vlan participation auto 1 vlan participation include 100,200,300 vlan tagging 100,200,300 exit interface 0/4 exit interface 0/5 vlan participation auto 1 vlan participation include 100,200,300 vlan tagging 100,200,300 exit interface 0/6 exit interface 0/7 vlan pvid 50 vlan ingressfilter vlan participation auto 1 vlan participation include 50 vlan tagging 50 exit interface 0/8 exit interface 0/9 exit interface 0/10 exit interface 0/11 exit interface 0/12 exit interface 0/13 exit interface 0/14 exit interface 0/15 exit interface 0/16 exit interface 0/17 exit interface 0/18 exit interface 0/19 exit interface 0/20 exit interface 0/21 exit interface 0/22 exit interface 0/23 exit interface 0/24 exit interface 0/25 exit interface 0/26 exit interface lag 1 exit interface lag 2 exit interface lag 3 exit interface lag 4 exit interface lag 5 exit interface lag 6 exit interface lag 7 exit interface lag 8 exit interface lag 9 exit interface lag 10 exit interface lag 11 exit interface lag 12 exit interface vlan 1 routing ip address dhcp exit exit
I can't spot what I'm doing wrong so appreciate if you can take a look.
Thanks,
J
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