SMC Networks TigerAccess SMC7816M Manual de usuario Pagina 608
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Valorado. / 5. Basado en revisión del cliente
C
LIENT
S
ECURITY
C
OMMANDS
23-20
from a DHCP server, any packets received from untrusted ports are
dropped.
Example
This example enables DHCP snooping globally for the switch.
Related Commands
ip dhcp snooping vlan (23-20)
ip dhcp snooping trust (23-24)
ip dhcp snooping vlan
This command enables DHCP snooping on the specified VLAN. Use the
no form to restore the default setting.
Syntax
[no] ip dhcp snooping vlan vlan-id
vlan-id - ID of a configured VLAN (Range: 1-4093)
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
• When DHCP snooping enabled globally using the ip dhcp snooping
command (page 23-18), and enabled on a VLAN with this command,
DHCP packet filtering will be performed on any untrusted ports
within the VLAN as specified by the ip dhcp snooping trust
command (page 23-24).
• When the DHCP snooping is globally disabled, DHCP snooping can
still be configured for specific VLANs, but the changes will not take
effect until DHCP snooping is globally re-enabled.
Console(config)#ip dhcp snooping
Console(config)#
- TigerAccess 1
- Management Guide 3
- Trademarks: 4
- NTRODUCTION 39
- ESCRIPTION 42
- System Defaults 47
- ONNECTING 52
- Basic Configuration 54
- Setting Passwords 55
- Setting an IP Address 56
- Manual Configuration 58
- Dynamic Configuration 59
- Trap Receivers 62
- Managing System Files 64
- Saving Configuration Settings 65
- AVIGATING 71
- Button Action 72
- Table 3-2 Switch Main Menu 73
- Using DHCP/BOOTP 96
- ANAGEMENT 100
- Command Attributes 102
- ESTORING 103
- ONFIGURATION 103
- 2. CLI only 107
- Telnet Settings 108
- 3. CLI only 109
- 7 Debug Debugging messages 111
- Remote Log Configuration 113
- Displaying Log Messages 115
- ONFIGURING 117
- Resetting the System 118
- Console#reload 19-5 119
- Console(config)# 121
- Console# 121
- Command Usage 128
- UTHENTICATION 149
- Configuring HTTPS 155
- Field Attributes 161
- Generate 163
- Configuring the SSH Server 164
- 802.1X P 167
- Displaying 802.1X Statistics 174
- Add IP Filtering Entry 177
- Figure 6-10 IP Filter 177
- Configuring Port Security 180
- Console(config-if)# 182
- Configuring DHCP Snooping 186
- Configuring Packet Filtering 193
- ILTERING 195
- 192.168.0.9 23-5 197
- Console(config-std-acl)# 202
- Configuring a MAC ACL 206
- Console(config-mac-acl)# 207
- Specifying the Mask Type 208
- Configuring an IP ACL Mask 209
- Configuring a MAC ACL Mask 212
- Field Attributes (Web) 217
- Field Attributes (CLI) 218
- Basic information: 218
- Configuration: 218
- Current status: 219
- NTERFACE 223
- ONNECTIONS 223
- Configuring LACP Parameters 229
- Displaying LACP Port Counters 233
- Command Attribute 243
- Showing Port Statistics 245
- TATISTICS 247
- Figure 9-13 Port Statistics 250
- Configuring Line Profiles 268
- Table 10-2 Rate Status 274
- ISPLAYING 275
- NFORMATION 275
- ERFORMANCE 279
- VDSL port 281
- Displaying CPE Information 288
- CPE Performance Counters 289
- Figure 10-7 CPE Information 291
- UNCTIONS 295
- PGRADING 295
- Changing the Aging Time 300
- LGORITHM 301
- Displaying Interface Settings 313
- Console(config-mst)# 325
- Console(config-if) 329
- IEEE 802.1Q VLAN 333
- Displaying Current VLANs 338
- Command Attributes (CLI) 339
- Creating VLANs 340
- Console(config)#pvlan 32-17 348
- IEEE 802.1Q T 355
- 3 for VLAN ID 1 365
- Priority 01234567 369
- Queue 20134567 369
- Figure 14-2 Traffic Classes 371
- Layer 3/4 Priority Settings 375
- Mapping IP Precedence 377
- Mapping DSCP Priority 379
- Mapping IP Port Priority 382
- Console(config-cmap)# 389
- ARAMETERS 393
- Multicast 397
- ULTICAST 398
- HROTTLING 413
- Multicast VLAN Registration 416
- Console(config)#mvr 35-24 419
- MVR VLAN 421
- EGISTRATION 425
- Address Entries 432
- Displaying the DNS Cache 434
- Web – Select DNS, Cache 435
- Figure 17-3 DNS Cache 435
- Console Connection 439
- Accessing the CLI 439
- Username: admin 441
- Password: 441
- Console>enable 442
- Console#show startup-config 442
- Showing Commands 443
- Using Command History 445
- Understanding Command Modes 445
- Console#configure 447
- Privileged Exec mode 448
- Command Line Processing 449
- Command Groups 450
- Table 19-1 General Commands 453
- Console#disable 455
- Console> 455
- Console#!2 457
- Console#config 457
- Console#reload 457
- Console(config)#prompt RD2 458
- RD2(config)# 458
- Console(config-if)#end 458
- Console(config)#exit 459
- Console#exit 459
- Press ENTER to start session 459
- User Access Verification 459
- Username: 459
- Console#quit 460
- Device Designation Commands 462
- System Status Commands 463
- Example 465
- Related Commands 465
- Command Mode 471
- Normal Exec, Privileged Exec 471
- System Mode Commands 473
- Command Function Mode Page 475
- File Management Commands 476
- GC 20-25 477
- Console#delete test2.cfg 482
- Line Commands 486
- Console(config)#line console 487
- Console(config-line)# 487
- Console#disconnect 1 497
- Event Logging Commands 499
- Table 20-13 Logging Levels 500
- Console#clear log 504
- SMTP Alert Commands 508
- Time Commands 513
- Console(config)#sntp poll 60 515
- Console#show calendar 519
- 15:12:34 February 1 2002 519
- Table 21-1 SNMP Commands 521
- Console(config)#snmp-server 522
- Privileged Exec 532
- 27. No view is defined 535
- 28. Maps to the defaultview 535
- User Account Commands 542
- Authentication Sequence 545
- RADIUS Client 548
- 10 retransmit 5 key green 549
- TACACS+ Client 553
- Web Server Commands 555
- Telnet Server Commands 560
- Secure Shell Commands 561
- Console(config)#ip ssh server 565
- Console#show ip ssh 571
- SSH Enabled - version 2.0 571
- Server key size: 768 bits 571
- 802.1X Port Authentication 574
- 802.1X P 575
- Console#dot1x re-authenticate 578
- Management IP Filter Commands 585
- Port Security Commands 590
- Packet Filtering Commands 593
- IP Source Guard Commands 599
- DHCP Snooping Commands 605
- Table 24-2 IP ACL Commands 616
- permit host 10.1.1.21 622
- Console(config-ip-mask-acl)# 623
- IP ingress mask ACL: 628
- mask host any 628
- mask 255.255.255.0 any 628
- Table 24-3 MAC ACL Commands 630
- Console#show mac access-list 634
- MAC access-list jerry: 634
- Console(config-mac-mask-acl)# 635
- Privileged Executive 641
- Console(config-if)#shutdown 653
- INTERFACES 655
- COUNTERS 657
- SWITCHPORT 659
- GGREGATION 661
- Console(config-if)#exit 664
- PRIORITY 669
- Table 29-1 VDSL Commands 683
- Long-Reach Ethernet Commands 684
- Table 29-4 HAM Band Notches 689
- Table 29-6 PSD Mask Options 699
- Console(config-if)#lre upbo 702
- Console(config)#lre tone tx 2 704
- Console(config-if)#lre apply 716
- Line Profile Commands 717
- Console(config-line-profile)# 720
- Alarm Profile Commands 733
- Displaying VDSL Information 743
- Field Description 765
- CPE Configuration 768
- Aging time: 300 sec 780
- Console(config)#spanning-tree 783
- 784
- Console(config-mstp)# 790
- SPANNING 797
- Table 32-1 VLAN Commands 809
- XTENSION 811
- Editing VLAN Groups 815
- Console(config)#vlan database 816
- Console(config-vlan)# 816
- Configuring VLAN Interfaces 817
- NTERFACES 819
- Displaying VLAN Information 824
- Console(config)#pvlan 826
- Configuring VLAN Swapping 838
- Priority Commands (Layer 2) 843
- Console(config)#priority bits 845
- Console#show queue mode 847
- Wrr status: Enabled 847
- Console(config)#map ip port 854
- IP Precedence Value 01234567 856
- CoS Value 01234567 856
- Console(config)#map ip dscp 857
- Console(config-pmap-c)# 868
- IGMP Query Commands 883
- Console(config-igmp-profile)# 892
- Console(config)#mvr 901
- MVR VLAN: 907
- Table 36-1 DNS Commands 909
- DHCP Client 919
- DHCP Relay 920
- PPENDICES 933
- PECIFICATIONS 935
- Management Features 937
- Standards 937
- Management Information Bases 938
- ROUBLESHOOTING 941
- Using System Logs 943
- Glossary-1 945
- Glossary-2 946
- Glossary-3 947
- Glossary-4 948
- Glossary-5 949
- Glossary-6 950
- Glossary-7 951
- Glossary-8 952
- Glossary-9 953
- Glossary-10 954
- Numerics 955
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