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VSC7440 датащи(PDF) 188 Page - Microsemi Corporation

номер детали VSC7440
подробное описание детали  L2/L3 Enterprise Gigabit Ethernet Switch with 10 Gbps Links
PDF  444 Pages
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производитель  MICROSEMI [Microsemi Corporation]
домашняя страница  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

VSC7440 датащи(HTML) 188 Page - Microsemi Corporation

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Functional Descriptions
VMDS-10492 VSC7440 Datasheet Revision 4.2
171
Figure 37 •
MAC Table Organization
3.22.1.1 MAC Entry Table
Each entry in the MAC table contains the fields listed in the following table.
Table 108 •
MAC Table Entry
Field
Bits
Description
VLD
1
Entry is valid.
MAC
48
The MAC address of the station. (Part of primary key).
FID
13
VLAN filtering identifier (FID) unicast C-MAC entries. VLAN identifier (VID) for multicast C-
MAC entries. (Part of primary key).
LOCKED
1
Lock the entry as static. Note: Locking an entry will prevent hardware from changing
anything but the AGE_FLAG in the entry.
MIRROR
1
Frames from or to this station are candidate for mirroring.
AGE_FLAG
2
The number of loopbackaging periods that have taken place since the last frame was
received from this station. Incremented by hardware during a CPU SCAN and AUTOAGE
SCAN for the entry configured AGE_INTERVAL.
AGE_INTERVAL 2
Used to select which age timer is associated with the entry.
NXT_LRN_ALL
1
Used to ensure consistent MAC tables in a stack.
CPU_COPY
1
Frames from or to this station are candidate for CPU copy. Used together with CPU_QU
(to specify queue number).
CPU_QU
3
Used together with CPU_COPY.
SRC_KILL_FWD 1
Frames from this station will not be forwarded. This flag is not used for destination lookups.
VLAN_IGNORE
1
Used for ignoring the VLAN_PORT_MASK contribution from the VLAN table when
forwarding frames to this station. Can optionally be used for source port ignore
(ANA_L2::FWD_CFG.FILTER_MODE_SEL).
ADDR
12
Stored entry address used for forwarding and port move detection. The field is encoded
according to ADDR_TYPE.
HASH_KEY (FIX, MAC)
CMAC Table
MAC Entry
Row 0
Row 8191



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