100BASE-T1 SPY 12 Port
User Manual
37
In the case that the BroadR-Reach packet is not VLAN tagged, or the
Keep original
VLANs in Header
option is disabled, the Ethernet 100BASET1_SPY RAW format frame
is as follows:
Dest MAC (6 bytes)
Source MAC (6 bytes)
0x2082 (2 bytes)
Direction (1 byte)
Time Stamp (6 bytes)
Port (1 byte)
Extra (1 byte)
Length (2 bytes)
Payload (BR, packet)
CRC (4 bytes)
The Payload field will consist on the received 100Base-T1 packet, showing an Ethernet
frame format, which starts with the MAC Destination field and finishes with the CRC
field of the original packet.
The following image shows an example of a 100BaseT1 frame encapsulated in a
100BASET1_SPY RAW frame, with header, and with
Keep original VLANs in Header
option enabled, when the received packet is not tagged with a VLAN. The same packet
will be forwarded when the
Keep original VLANs in Header
option is disabled:
