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BIOS Configuration Overview
45
Jumbo Frames Configuration
Jumbo frames extend the Ethernet frame size from the normally-allowed 1536 bytes to
9728 bytes. The CPC5565 BIOS setup allows configuration of which ports are enabled to allow
jumbo frames. You may also enable whether or not jumbo frames should be allowed on ports
that are operating at 10/100M.
Selecting the Jumbo Frames Configuration option on the Switch Configuration submenu brings
up the screen shown in
Figure 3-7, “Jumbo Frames Configuration Screen,” where this option
can be configured.
Due to frame buffer memory limitations, PT recommends that no more than five ports be
enabled to pass jumbo frames at any one time. The default configuration enables jumbo
frames for all Ethernet ports except Front Panel B, PMC A, and PMC B.
Figure 3-7: Jumbo Frames Configuration Screen
BIOS SETUP UTILITY
Jumbo Frames Configuration
ESC
Save and Exit
Select Item
F10
General Help F1
Enabled = Allow jumbo
frames on 10/100Mb
& 1Gb connections
Disabled = Allow jumbo
frames only on 1Gb
connections
Enter
Jumbo Frames on 10/100
ENET A
ENET B
PMC A
PMC B
2.16 A
2.16 B
Front Panel A
Front Panel B
[Enabled]
[Enabled]
[Enabled]
[Disabled]
[Disabled]
[Enabled]
[Enabled]
[Enabled]
[Disabled]
Select Screen
Change Option
Exit
Advanced