Standalone switch: same ip as default-gateway and interface vlan ip

[keeran]

I have a standalone switch that has the ip 192.168.172.230. I tried to configure same ip as the default-gateway for that switch, because it is an standalone. I just though i could point on the same swtich as default-gateway. It turned out, that it is not a good idea. While configuring i saw some connection problems and some configs i could not save because it just did not allow me to save. Also I lost the connection bettween devices connected to the switch. 

What is your expert-opinion about giving the same ip as default-gateway and interface vlan ip(management ip for the swtich) ? I know it wont make any different if i dont configure default-gateway since there is no connection that has to go out from my network.

[marce1000 · Accepted solution]

  - You should never have the default gateway , being the same as the switch management address, usually the problem doesn't even apply because on modern devices the management interface uses a separate VRF. Also the default gateway can be different per configured VLAN/Subnet , 

 M.

[MHM Cisco World]

why you do this, it form routing loop, and packet is drop.

[Joseph W. Doherty]

To be clear, you're asking about using the same switch IP for both management and a host gateway or assigning switch's default gateway to its own management IP?

[keeran]

i am talking about assigning swithc's default gateway its own management ip.

Just curious, if its like what i think. 

I fould that in an old config and asked myself how does this make sense....

[MHM Cisco World]

sure it is typo, 

[Joseph W. Doherty]

Well, if so, it's an error of some kind, perhaps as simple as being a typo, at mentioned by @MHM Cisco World.

You could use the same interface for both management and (if this is a L3 switch) as a gateway for connecting networks.  This would not generally be considered a good practice, which is why I believe @marce1000 writes "should never", but not just "never".