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VSC7511 датащи(PDF) 100 Page - Microsemi Corporation

номер детали VSC7511
подробное описание детали  4-Port Layer-2 Gigabit Ethernet Switch
PDF  324 Pages
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производитель  MICROSEMI [Microsemi Corporation]
домашняя страница  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

VSC7511 датащи(HTML) 100 Page - Microsemi Corporation

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Functional Descriptions
VMDS-10488 VSC7511 Datasheet Revision 4.2
85
The following tables provide information about how the IS2 full keys are generated. The first table lists
the common fields between the full keys.
Table 53 •
IS2 IP6_STD Key
Field Name
Bit
Width
Description
Layer-3 Information
L3_TTL_GT0
46
1
Set if IP HOPLIMIT is greater than 0.
L3_IP6_SIP
47
128
Frame’s source IPv6 address
L3_PROTO
175
8
IPv6 next header.
Table 54 •
IS2 OAM Key
Field Name
Bit
Width
Description
Layer-2 Information
L2_DMAC
46
48
Frame’s destination MAC address
L2_SMAC
94
48
Frame’s source MAC address
OAM_MEL_FLAGS 142
7
Encoding of MD level/MEG level (MEL).
One bit for each level (lowest level encoded as zero)
The following keys can be generated:
MEL=0: 0x0000000
MEL=1: 0x0000001
MEL=2: 0x0000011
MEL=3: 0x0000111
MEL=4: 0x0001111
MEL=5: 0x0011111
MEL=6: 0x0111111
MEL=7: 0x1111111
Together with the mask, the following kinds of rules may be
created:
Exact match. Fx. MEL=2: 0x0000011
Below. Fx. MEL<=4: 0x000XXXX
Above. Fx. MEL>=5: 0xXX11111
Between. Fx. 3<= MEL<=5: 0x00XX111,
where ‘X’ means ‘don’t care’.
OAM_VER
149
5
Frame’s OAM version.
OAM_OPCODE
154
8
Frame’s OAM opcode.
OAM_FLAGS
162
8
Frame’s OAM flags.
OAM_MEPID
170
16
CCM frame’s OAM MEP ID.
OAM_CCM_CNTS_
EQ0
186
1
Flag indicating whether dual-ended loss measurement
counters in CCM frames are used or not. The flag
OAM_CCM_CNTS_EQ0 is set if the counters TxFCf, RxFCb,
and TxFCb are set to all zeros.
OAM_IS_Y1731
187
1
Set if frame’s EtherType = 0x8902
Table 55 •
IS2 Common Key Fields for Full keys
Field Name
Bit
Width
Description
Lookup Information



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