Netgear M4300-52G-PoE+ (GSM4352PB) - 48x1G PoE+ Stackable Managed Switch with 2x10GBASE-T and 2xSFP+ (1,000W PSU) Administrator's Guide

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OSPF 
131
 Managed Switches
In the Network Mask field, enter 255.255.255.0.
In the Routing Mode field, select Enable.
d.  Click Apply to save the settings.
3. 
Assign IP address 192.168.20.2 to port 1/0/15.
a. Select Routing > IP > Advanced > IP Interface Configuration
A screen similar to the following displays.
b.  Under Configuration, scroll down and select the interface 1/0/15 check box. 
Now 1/0/15 appears in the Interface field at the top.
c.  Enter the following information:
In the IP Address Configuration Method field, select Manual.
In the IP Address field, enter 192.168.20.2.
In the Network Mask field, enter 255.255.255.0.
In the Routing Mode field, select Enable.
d.  Click Apply to save the settings.
4. 
Specify the router ID, and enable OSPF for the switch. 
a. Select Routing > OSPF > Basic > OSPF Configuration