Device Family: Intel® Arria® 10, Intel® Stratix® 10

Intel Software: Quartus Prime Pro

Type: Answers

Area: Intellectual Property


Last Modified: June 17, 2020
Version Found: v18.1
Bug ID: 1507628293
IP: 25G Ethernet

What VLAN tag does the 25G Ethernet Intel® FPGA IP support for Stacked VLAN frame?

Description

Due to the problem in the 25G Ethernet Intel® FPGA IP User Guide, support for VLAN tag is not clear for Stacked VLAN frame.  

The original description is:

Length/type = 0x8100—VLAN or stacked VLAN tagged frames. The MAC RX continues to check the frame and payload length. 

The updated version should be:

Length/type = 0x8100—VLAN or stacked VLAN tagged frames (up to a total of two tags with value 0x8100). The MAC RX continues to check the frame and Payload length.

Workaround/Fix

The 25G Ethernet Intel® FPGA IP user guide is scheduled to be updated with this detail in a future release.