Dell PowerConnect 8100 User's Configuration Guide - Page 518
How Are ACLs Con d?, Preventing False ACL Matches, Table 21-1., Common EtherType Numbers
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NOTE: The actual number of ACLs and rules supported depends on the resources consumed by other processes and configured features running on the switch. How Are ACLs Configured? To configure ACLs, follow these steps: 1 Create a MAC ACL by specifying a name. 2 Create an IP ACL by specifying a number. 3 Add new rules to the ACL. 4 Configure the match criteria for the rules. 5 Apply the ACL to one or more interfaces. Preventing False ACL Matches Be sure to specify ACL access-list, permit, and deny rule criteria as fully as possible to avoid false matches. This is especially important in networks with protocols such as FCoE that have newly-introduced EtherType values. For example, rules that specify a TCP or UDP port value should also specify the TCP or UDP protocol and the IPv4 or IPv6 EtherType. Rules that specify an IP protocol should also specify the EtherType value for the frame. In general, any rule that specifies matching on an upper-layer protocol field should also include matching constraints for each of the lower-layer protocols. For example, a rule to match packets directed to the well-known UDP port number 22 (SSH) should also include matching constraints on the IP protocol field (protocol=0x11 or UDP) and the EtherType field (EtherType= 0x0800 or IPv4). Figure 21-1 lists commonly-used EtherTypes numbers: Table 21-1. Common EtherType Numbers EtherType 0x0800 0x0806 0x0842 0x8035 0x8100 Protocol Internet Protocol version 4 (IPv4) Address Resolution Protocol (ARP) Wake-on LAN Packet Reverse Address Resolution Protocol (RARP) VLAN tagged frame (IEEE 802.1Q) 518 Configuring Access Control Lists
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1,202
-
1,203
-
1,204
-
1,205
-
1,206
-
1,207
-
1,208
-
1,209
-
1,210
-
1,211
-
1,212
-
1,213
-
1,214
-
1,215
-
1,216
-
1,217
-
1,218
-
1,219
-
1,220
-
1,221
-
1,222
-
1,223
-
1,224
-
1,225
-
1,226
-
1,227
-
1,228
-
1,229
-
1,230
-
1,231
-
1,232
-
1,233
-
1,234
-
1,235
-
1,236
-
1,237
-
1,238
-
1,239
-
1,240
-
1,241
-
1,242
-
1,243
-
1,244
-
1,245
-
1,246
-
1,247
-
1,248
-
1,249
-
1,250
-
1,251
-
1,252
-
1,253
-
1,254
-
1,255
-
1,256
-
1,257
-
1,258
-
1,259
-
1,260
-
1,261
-
1,262
-
1,263
-
1,264
-
1,265
-
1,266
-
1,267
-
1,268
-
1,269
-
1,270
-
1,271
-
1,272
-
1,273
-
1,274
-
1,275
-
1,276
-
1,277
-
1,278
-
1,279
-
1,280
-
1,281
-
1,282
-
1,283
-
1,284
-
1,285
-
1,286
-
1,287
-
1,288
-
1,289
-
1,290
-
1,291
-
1,292
-
1,293
-
1,294