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Forum Discussion
tantony
Apr 25, 2019Luminary
VLAN question on factory default setting
I have a XS716T with 3 VLANS. Ports 1-5 on VLAN 2, 6-10 on VLAN 3, 11-15 on VLAN 4, and port 16 is the trunk port. The management VLAN is VLAN 4. I don't have a default VLAN 1 on this switch. Everyth...
- Apr 25, 2019
tantony wrote:
I have a XS716T with 3 VLANS. Ports 1-5 on VLAN 2, 6-10 on VLAN 3, 11-15 on VLAN 4, and port 16 is the trunk port... reset a XS728T to factory default. ... This doesn't have any VLANs in it. So I connected this switch to port 13 on the XS716T. Then I connected a laptop to the XS728T. I was not expecting to get a VLAN 4 ip, but I got one.
Why is this? The XS728T only have VLAN 1 in it, and it's on factory setting.
Simple: You have connected the new switch to a port associated to the untagged VLAN 4. There is no "magic" to discover that this port is a member of the VLAN, anything you connect there does see a "flat" L2 network - this VLAN 4. On the newly added switch all ports default to VLAN 1 untagged - so a flat network again. Compare: The same thing would happen if adding an unmanaged switch btw.
On a static VLAN configuration, there is no automatic distribution of VLANs going on - and this can't happen on an untagged port anyway.
tantony
Apr 25, 2019Luminary
This is what my configuration looks like on the XS716T
tantony
Apr 25, 2019Luminary
I'm assuming the XS728T is acting as a "dummy" switch and that's why it's getting VLAN 4?
I looked at this Netgear article, and that's how I have my switch setup, except I don't have VLAN 1
https://kb.netgear.com/31026/How-to-configure-a-VLAN-on-a-NETGEAR-managed-switch
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