Hi,

Hardware:

OC200,

ER605 v2.0

SG2428P v5.20

some AP(265HD, 235).

 

I have 4 VLANs:

1 - 192.168.0.x (infrastructure)

10 - 192.168.10.x (PCs)

20 -

30 - 

 

and working OK for almost a year now.

Perhaps I didn't noticed, but my leading Ubuntu pc that should have been on IP 192.168.10.11 (part of PC VLAN),

got 192.168.0.12. I noticed that only when I added another PC to VLAN1.

No matter what I did, it remained at 192.168.0.12.

 

Trials:

1. Connect other PC to that specific wall outlet - assigned another IP

2. Connect wall outlet to a different port on switch - assisgned same IP.

3. replaced the SSD with a fresh installation of Ubuntu - assigned same IP.

3. Verified that relevant port (port11) is set to "All" (vlans) - assigned same IP.

4. defined VLAN10 on port11 assigned same IP.

5. verify that DHCP reservation is set to requested IP - still assigned same IP.

6. delete DHCP reservation - assigned same IP.

7. Verfied that there is no IP-MAC bind - still same IP.

8. multiple reboots, and disconnecting wall jack connector - remained the same.

 

I'm 100% positive that it has something to do with siwtch that preserves this IP, and not from PC side, or specific port.

 

please help :) 

 

Guy