基于BCM53115实现ACL功能Word文档格式.docx
- 文档编号:16589174
- 上传时间:2022-11-24
- 格式:DOCX
- 页数:24
- 大小:65.91KB
基于BCM53115实现ACL功能Word文档格式.docx
《基于BCM53115实现ACL功能Word文档格式.docx》由会员分享,可在线阅读,更多相关《基于BCM53115实现ACL功能Word文档格式.docx(24页珍藏版)》请在冰豆网上搜索。
TCAM数据和掩码寄存器。
对应于上述的SliceKey。
SliceKey中不一定每一个字段都要匹配,不需要匹配的字段,可将掩码寄存器的相应bit设置为0。
下面的4个表格说明了4种Slice格式与TCAM数据和掩码寄存器的对应关系。
Table1:
SliceFormatforIPv4Packets
Field
Width
(bits)
SliceBitMap
TCAMData/MaskRegisterMap
TCAMRegisterBitMap
Description
Source_PortMap
8
231:
224
TCAMDataRegister7,PageA0h,Address2Ch–2Fh.
TCAMMaskregister7,PageA0h,Address4Ch–4Fh.
Bit[7:
0]
Theingressportselecttowhichtheruleapplies.Toenableakeytoaportorports,thecorrespondingportmaskbitshouldbesetto0,regardlessofthesettingstateinthekeyfield.
S_Tag_Status
2
223:
222
TCAMDataRegister6,PageA0h,address28h–2Bh.
TCAMMaskRegister6,PageA0h,Address48h–4Bh
Bit[31:
30]
00=thepacketwasoriginallyreceivedwithoutSTag.
01=thepacketwasoriginallyreceivedwithSVID=0.
10=reserved.
11=thepacketwasoriginallyreceivedwithSVID=not0.
C_Tag_Status
221:
220
Bit[29:
28]
00=thepacketwasoriginallyreceivedwithoutCTag.
01=thepacketwasoriginallyreceivedwithCVID=0.
11=thepacketwasoriginallyreceivedwithCVID=not0.
L2_Framing
219:
218
Bit[27:
26]
00=DIXv2
01=SNAPPublic
L3_Framing
217:
216
Bit[25:
24]
00=IPv4
IP_TOS
215:
208
Bit[23:
16]
TypeofServicefieldinIPv4header
IP_Protocol
207:
200
Bit[15:
8]
ProtocolfieldinIPv4header
IP_Fragmentation
1
199
Bit[7]
0=notfragmented
1=fragmented
Non_First_Fragment
198
Bit[6]
Bit[6]0=notfragmentedorfirstfragment
1=notfirstfragmented
IP_Authentication
197
Bit[5]
0=notauthenticated
1=authenticated
TTL_Range
196:
195
Bit[4:
3]
00:
TTL=0
01:
TTL=1
10:
TTL=others
11:
TTL=255
Reserved
194:
193
Bit[2:
1]
Defaulttozero
UDF_Valid[8]
192
Bit[0]
IndicateswhetherUDF_n_A8isvalid
UDF_Valid[7:
191:
184
TCAMDataRegister5,PageA0h,Address24h–27h.
TCAMMaskRegister5,PageA0h,Address44h–47h.
24]
IndicatesifUDF_n_A[7:
0]isvalid
S-Tag
16
183:
168
TheSVLANtagiscarriedinthepacketexplicitlyorisgeneratedimplicitlybasedontheingressportdefaultsetting.
C-Tag
167:
160
TheCVLANtagiscarriedinthepacketexplicitlyorisgeneratedimplicitlybasedontheingressportdefaultsetting.
8(LSB)
159:
152
TCAMDataRegister4,PageA0h,Address20h–23h.
TCAMMaskRegister4,PageA0h,Address40h–43h.
UDF_n_A8
151:
136
MustbevalidatedbyUDF_Valid[8]
UDF_n_A7
135:
128
MustbevalidatedbyUDF_Valid[7]
127:
120
TCAMDataRegister3,PageA0h,Address1Ch–1Fh.
TCAMMaskRegister3,PageA0h,Address3Ch–3Fh.
UDF_n_A6
119:
104
MustbevalidatedbyUDF_Valid[6]
UDF_n_A5
103:
96
MustbevalidatedbyUDF_Valid[5]
95:
88
TCAMDataRegister2,PageA0h,Address18h–1Bh.
TCAMMaskRegister2,PageA0h,Address38h–3Bh.
UDF_n_A4
87:
72
MustbevalidatedbyUDF_Valid[4]
UDF_n_A3
71:
64
MustbevalidatedbyUDF_Valid[3]
63:
56
TCAMDataRegister1,PageA0h,address14h–17h.
TCAMMaskRegister1,PageA0h,Address34h–37h.
UDF_n_A2
55:
40
MustbevalidatedbyUDF_Valid[2]
UDF_n_A1
39:
32
MustbevalidatedbyUDF_Valid[1]
31:
24
TCAMDataRegister0,PageA0h,Address10h–13h.
TCAMMaskRegister0,PageA0h,Address30h–33h.
UDF_n_A0
23:
MustbevalidatedbyUDF_Valid[0]
4
7:
4]
Defaultstozero
Slice_ID
3:
Bit[3:
2]
LogicalCFPruleforsliceidentification:
00=slice0
01=slice1
10=slice2
11=slice3
Slice_Valid
1:
Bit[1:
Bitsusedtovalidatethecorresponding
sliceandmustbesetto2’b11.
Table2:
SliceFormatforIPv6Packets
L2_Framing
01=IPv6
IP_TrafficClass
IPv6headerTrafficClassfield
IP_NextHeader
LastparsednextheaderfromtheIPv6header/extensionheaderchain.
HopLimitRange
HopLimit=0
HopLimitTTL=1
HopLimit=others
HopLimit=255
IndicateswhetherUDF_n_B8isvalid
IndicatesifUDF_n_B[7:
UDF_n_B8
UDF_n_B7
UDF_n_B6
UDF_n_B5
UDF_n_B4
UDF_n_B3
UDF_n_B2
UDF_n_B1
UDF_n_B0
Table3:
SliceFormatforNon-IPPackets
10=LLC
11=SNAPPrivate
11=NonIP
EtherType/SAP
Ethertypew
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 基于 BCM53115 实现 ACL 功能