Before enabling jumbo frames, read the article Guidance on the use of jumbo frames for more information on how jumbo frames work and when it is suitable for your deployment.
The maximum transmission unit (MTU) size, also called maximum frame size, is the maximum Ethernet frame size that an interface can support. The frame size includes the Ethernet header, CRC, and payload. The frame size is defined in IEEE 802.3 and calculated with the Layer 2 Ethernet frame and the optional IEEE 802.1Q VLAN/QoS tag.
If clients are set to an MTU size of 9000, it is a good practice to set the MTU size on the switch to a slightly higher value, such as 9216, to allow for the additional header size from clients.
On current NETGEAR fully managed switches, the frame size range is from 1500 to 12270. The default frame size is 9198.
Main user interface:
To configure interface 1/0/4 to an MTU of 9216 (a jumbo frame) on a fully managed switch using the main user interface:
- Launch a web browser and enter the IP address of the switch in the address field of your web browser.
The login page displays. - Click the Main UI Login button.
The main UI login page displays in a new tab. - Enter admin as the user name and enter one of the following passwords:
- Enter your local device password.
- The first time that you log in, no password is required. However, you then must specify
a local device password to use each subsequent time that you log in. - If you are managing the switch through the Engage controller, enter the site password
for the Engage site to which the switch is onboarded. - If, in addition to the main UI, you are also managing the switch through the Insight Cloud Portal
or Insight app, enter the Insight network password for the Insight network to which the switch is added.
- Click the Login button.
The System Information page displays. - Select Switching > Ports > Port Configuration.
- Select the Port 1/0/4 check box.
- In the Frame Size field, type 9216.
- Click the Apply button.
Your settings are saved.
CLI commands:
To configure interface 1/0/4 to an MTU of 9216 (a jumbo frame) on a fully managed switch using CLI commands:
- From global mode, enter privileged mode and then enter configuration mode:
(Netgear Switch) >enable
Password:********
(Netgear Switch) #configure
(Netgear Switch) (Config)#
- Enter the configuration mode of the port on which you want to enable jumbo frames:
(Netgear Switch) (Config)#interface 1/0/4
- Configure the maximum frame size:
(Netgear Switch) (Interface 1/0/4)#mtu 9216