EASY 6996M CPU Infineon Technologies, EASY 6996M CPU Datasheet - Page 39

• Manufacturer Part Number: EASY 6996M CPU
• Description: BOARD EVAL W/CPU ADM6996M
• Manufacturer: Infineon Technologies
• Series: Samurair

Specifications of EASY 6996M CPU

• Main Purpose: Interface, Ethernet
• Embedded: No
• Utilized Ic / Part: ADM6996M
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Primary Attributes: -
• Other names: EASY6996MCPUIN

VLAN Security Samurai-6M/6MX (ADM6996M/MX) ignores packet’s VID and always uses PVID to see if there is
a match and transfers it to the output ports. Disables the “VLAN Security Disable” (See 0022
this goal.
Input Force No Tag when enabled (see 0020
packets are untagged and PVID is used. Input Force No Tag and VLAN Security are different in some situations.
Table 15
Parameter
VLAN Security
Input Force No
Tag
3.1.14.5
Samurai-6M/6MX (ADM6996M/MX) supports a function to check if the packet is VLAN-Tagged, and any packets
received on that port that carries no VID (untagged packets or packets with VID = 0) are discarded and recorded
as a VLAN violation. This feature is implemented by programming the “Admit Only VLAN-Tagged” (see 0027
AOVTP).
Samurai-6M/6MX (ADM6996M/MX) assumes all the packets are untagged in the “Input Force No Tag” mode and
users should care that in this situation, “Admit Only VLAN Tagged” is of no effect.
3.1.14.6
In Tagged VLAN, the VID for comparison must be contained in the VLAN filters, or the packet received on the port
will be dropped and recorded as a VLAN violation. This feature is disabled by programming the “VID CHECK” bit
to 0 (see 0026
3.1.14.7
In Samurai-6M/6MX (ADM6996M/MX), every incoming packet is associated with a FID group. Samurai-6M/6MX
(ADM6996M/MX) searches the learning table for the FID + DA, FID + SA. VLAN boundary restricts the allowable
destination ports.
Table 16
Port VLAN
Tagged
VLAN
Table 17
Port VLAN
Data Sheet
VID Comparison
Admit Only VLAN-Tagged Packets
VID Check
FID and VLAN Boundary
FID Search Algorithm
VLAN Boundary Search Algorithm
The source port number is the VLAN filter index. We can find FID in this filter.
VID match Fid is contained in the matched filter. We can find FID in this filter.
VID un-
match
The source port number is the VLAN filter index. We can find the boundary in this filter.
H
, VC) to forward these packets instead of dropping them.
Tagged Frame with VID = 12’hfff
The frame is recorded as a VLAN violation
and discarded if VIDFFF is not replaced.
The frame is recognized as an untagged
frame. PVID is carried with this packet to the
output port.
VID check
VID
uncheck
The frame is dropped.
Default FID is the FID (see 000A
6M/6MX (ADM6996M/MX) to back to port VLAN (see 0027
can find the FID in the same way as the Port VLAN. When this feature is
enabled, VLAN filter 0 ~ 5 are for Port VLAN purpose and VLAN filter 6
~15 are for VID comparison.
H
, IFNTE), Samurai-6M/6MX (ADM6996M/MX) assumes all the
39
Packet Transmitted Tagged
Output packets have only one VLAN tag.
Output packets may have double tags,
because the packet is transmitted with an
additional tag with PVID.
H
, DFID). If users configure Samurai-
Revision 1.4, 2006-03-24
Function Description
Samurai-6M/MX
ADM6996M/MX
H
, VSD) to achieve
H
, BPV), we
H
,