D-Link DGS-1520-28MP Product Manual - Page 224
service dhcp DHCP Relay
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DGS-1520 Series Gigabit Ethernet Smart Managed Switch CLI Reference Guide Command Default Level Level: 12. Usage Guideline Use the class command and this command to associate a list of relay target addresses with a DHCP class. When the client request matches a relay pool and the DHCP relay pool is defined with classes, the client request must match a class specified in the pool in order to be relayed. If the packet does not match any class in the pool, the packet will not be replayed. If the matched relay pool has no class defined, then the request will be relayed to the relay destination of the matched relay pool. Multiple relay target commands can be specified for a class. If a packet matches the class, the packet will be forwarded to all of the relay targets. If the relay target command is not configured for a class, the relay target follows the relay destination specified for the pool. The DHCP packet will not be relayed when the interface that receives the packet has no IP address configured. Example This example shows how to configure a DHCP relay target for relaying packets that matches the value pattern of the option defined in the class. Switch#configure terminal Switch(config)#ip dhcp class Service-A Switch(config-dhcp-class)#option 60 hex 112233 Switch(config-dhcp-class)#option 60 hex 102030 Switch(config-dhcp-class)#exit Switch(config)#ip dhcp pool pool1 Switch(config-dhcp-pool)#relay source 172.19.18.0 255.255.255.0 Switch(config-dhcp-pool)#class Service-A Switch(config-dhcp-pool-class)#relay target 10.2.1.2 Switch(config-dhcp-pool-class)# 20-22 service dhcp (DHCP Relay) This command is used to enable the DHCP server and relay service on the Switch. Use the no form of this command to disable the DHCP server and relay service. service dhcp no service dhcp Parameters None. Default By default, the state is disabled. Command Mode Global Configuration Mode. Command Default Level Level: 12. 220
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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
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![](/manual_guide/products/dlink-dgs152028-product-manual-eab3312/224.png)