How to turn a Cisco sg220-50-port gigabit smart switch into "unmanaged switch"

[AbdoModo87677]

Hello,

How to turn a Cisco sg220-50-port gigabit smart switch into "unmanaged switch"

what should i disable to make the switch work like unmanaged one ?

Thank you .

[balaji.bandi]

by default the switch work as Layer 2 Mode, if they not configured any special config, so all port belong to VLAN 1

[Richard Burts]

It is not clear why the original poster wants to turn a smart switch into an unmanaged switch. But the question is asked and here are some suggestions:

- leave all switch ports in the default vlan 1.

- do not configure an IP address for interface vlan 1

- based on a recent discussion in the community you might want to disable CDP. In that discussion a switch acting as unmanaged switch was connected to a switch port in a vlan other than vlan 1 and CDP was reporting vlan mismatch. 

- I am not sure what other services might be running on the sg220 that would make it not look like an unmanaged switch.

[Joseph W. Doherty · Accepted solution]

"I am not sure what other services might be running on the sg220 that would make it not look like an unmanaged switch."

Unsure too, as I'm unfamiliar with SG switches, but perhaps, if supported, also STP, LLDP, DTP, etc.(?)  Insure no ports are configured as trunk ports.  Besides not configuring an IP for VLAN 1, don't configured any management IP.  W/o a management IP believe you're safe from various services that might be enabled.

[AbdoModo87677]

Hello,

ports selected as " Trunk " by default in VLAN Management, which one should i select for it i have 4 options ( General , Access, Trunk, Dot1q-Tunnel )
should i just select trunk ?

( Iam using Software on server for PXE Windows boot for clients pc's, but clients don't read the pxe server software somehow, i tested on the router port it did read it, but when i connect both router and client pc and server to the  switch it doesn't read )

also i have LLDP and CDP in my switch should i disable them too ?

[Joseph W. Doherty]

I suggested not to set any ports to trunk mode (i.e. make all access ports) because you asked to make the switch operate like an unmanaged switch, and those, I believe, do not support trunk ports.

Ditto for LLDP and CDP, but from what you're now describing, it appears you're trying to solve a PXE boot issue by making the SG switch like an unmanaged switch, correct?

[AbdoModo87677]

i reset switch to default settings, but as i told you when i check vlan management > interface settings, i see all the ports set to trunk by default if not to trunk then to witch one should i select : Access Or General Or Dot1q-Tunnel ?

please check these screenshot i have uploaded
Also should i Disable LLDP  and CDP ?

"t appears you're trying to solve a PXE boot issue by making the SG switch like an unmanaged switch, correct?"

yes correct

[AbdoModo87677]

i reset switch to default settings, but as i told you when i check vlan management > interface settings, i see all the ports set to trunk by default if not to trunk then to witch one should i select : Access Or General Or Dot1q-Tunnel ?

please check these screenshot i have uploaded
Also should i Disable LLDP  and CDP ?

"t appears you're trying to solve a PXE boot issue by making the SG switch like an unmanaged switch, correct?"

yes correct

[AbdoModo87677]

also should i Disable STP too ?

[AbdoModo87677]

Problem solved after disabled STP LLDP CDP, and changed ports to General now PXE boot works

[AbdoModo87677]

Thanks you everyone who tried to whelp

[Joseph W. Doherty]

Fantastic!

I think you can mark you own solution as solved.  You might do so to highlight how you solved the problem.