D-Link DGS-1520-52MP Product Manual - Page 222
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DGS-1520 Series Gigabit Ethernet Smart Managed Switch CLI Reference Guide Parameters IP-ADDRESS Specifies the relay destination DHCP server IP address. Default None. Command Mode DHCP Pool Configuration Mode. Command Default Level Level: 12. Usage Guideline The relay destination of the DHCP server can be specified in the DHCP relay pool. To do this, use the ip dhcp pool command to enter the DHCP Pool Configuration Mode and then use the relay source command to specify the source subnet of the client requests. Use the relay destination command to specify the relay destination server address. Multiple relay sources and multiple relay destinations can be specified in a pool. If a packet matches anyone of the relay sources, the packet will be forwarded to all of the relay destinations. When receiving a DHCP request packet, if the subnet that the packet comes from matches the relay source of a relay pool, the packet will be relayed based on this relay pool. Otherwise, the packet is relayed based on the IP helper address configured for the received interface. To relay a packet based on the relay pool, if the request packet is a relayed packet, the GIADDR of the packet is the source of the request. If the request packet is not a relayed packet, the subnet of the received interface is the source of the packet. In a DHCP relay pool, administrators can further use the class command and the relay target command to associate a list of relay target addresses with a DHCP class. Example This example shows how to create a DHCP relay pool "pool1". In the relay pool, the subnet 172.19.10.0/255.255.255.0 is specified as the source subnet and 10.2.1.1 is specified as the relay destination address. Switch#configure terminal Switch(config)#ip dhcp pool pool1 Switch(config-dhcp-pool)#relay source 172.19.10.0 255.255.255.0 Switch(config-dhcp-pool)#relay destination 10.2.1.1 Switch(config-dhcp-pool)# 20-20 relay source This command is used to specify the source subnet of client packets. Use the no form of this command to remove the source subnet relay source IP-ADDRESS SUBNET-MASK no relay source IP-ADDRESS SUBNET-MASK Parameters IP-ADDRESS SUBNET-MASK Specifies the source subnet of client packets. Specifies the network mask of the source subnet. 218
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1,185
-
1,186
-
1,187
-
1,188
-
1,189
-
1,190
-
1,191
-
1,192
-
1,193
-
1,194
-
1,195
-
1,196
-
1,197
-
1,198
-
1,199
-
1,200
-
1,201
-
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
-
1,295
-
1,296
-
1,297
-
1,298
-
1,299
-
1,300
-
1,301
-
1,302
-
1,303
-
1,304
-
1,305
-
1,306
-
1,307
-
1,308
-
1,309
-
1,310
-
1,311
-
1,312
-
1,313
-
1,314
-
1,315
-
1,316
-
1,317