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Configuration
To configure the DHCP server interface as untrusted because the interface is being used
by a rogue DHCP server:
CLI Quick
Configuration
To quickly set the rogue DHCP server interface as untrusted, copy the following command
and paste it into the switch terminal window:
[edit ethernet-switching-options secure-access-port]
set interface ge-0/0/8 no-dhcp-trusted
Step-by-Step
Procedure
To set the DHCP server interface as untrusted:
Specify the interface (port) from which DHCP responses are not allowed:
[edit ethernet-switching-options secure-access-port]
user@switch#
set interface ge-0/0/8 no–
dhcp-trusted
Results
Check the results of the configuration:
[edit ethernet-switching-options secure-access-port]
user@switch# show
interface ge-0/0/8.0 {
no-dhcp-trusted;
}
Verification
To confirm that the configuration is working properly:
•
Verifying That the DHCP Server Interface Is Untrusted on page 2862
Verifying That the DHCP Server Interface Is Untrusted
Purpose
Verify that the DHCP server is untrusted.
Action
Send some DHCP requests from network devices (here they are DHCP clients) connected
to the switch.
Display the DHCP snooping information when the port on which the DHCP server connects
to the switch is not trusted.
user@switch>
show dhcp snooping binding
Meaning
There is no output from the command because no entries are added to the DHCP snooping
database.
Related
Documentation
Example: Configuring Port Security, with DHCP Snooping, DAI, MAC Limiting, and MAC
Move Limiting, on an EX Series Switch on page 2849
•
•
Enabling a Trusted DHCP Server (CLI Procedure) on page 2912
•
Enabling a Trusted DHCP Server (J-Web Procedure) on page 2912
Copyright © 2010, Juniper Networks, Inc.
2862
Complete Software Guide for Junos
®
OS for EX Series Ethernet Switches, Release 10.3
Содержание JUNOS OS 10.3 - SOFTWARE
Страница 201: ...CHAPTER 10 Operational Mode Commands for Software Installation 105 Copyright 2010 Juniper Networks Inc ...
Страница 249: ...CHAPTER 13 Operational Mode Commands for User Interfaces 153 Copyright 2010 Juniper Networks Inc ...
Страница 325: ...CHAPTER 17 Operational Mode Commands for System Setup 229 Copyright 2010 Juniper Networks Inc ...
Страница 369: ... Temperature OK 273 Copyright 2010 Juniper Networks Inc Chapter 17 Operational Mode Commands for System Setup ...
Страница 483: ...CHAPTER 21 Configuration Statements for Power Management 387 Copyright 2010 Juniper Networks Inc ...
Страница 487: ...CHAPTER 22 Operational Mode Commands for Power Management 391 Copyright 2010 Juniper Networks Inc ...
Страница 543: ...CHAPTER 27 Operational Mode Commands for Configuration Management 447 Copyright 2010 Juniper Networks Inc ...
Страница 631: ...CHAPTER 33 Operational Mode Commands for User and Access Management 535 Copyright 2010 Juniper Networks Inc ...
Страница 709: ...CHAPTER 38 Operational Mode Commands for System Services 613 Copyright 2010 Juniper Networks Inc ...
Страница 763: ...CHAPTER 41 Configuration Statements for System Monitoring 667 Copyright 2010 Juniper Networks Inc ...
Страница 817: ...CHAPTER 42 Operational Mode Commands for System Monitoring 721 Copyright 2010 Juniper Networks Inc ...
Страница 1014: ...Copyright 2010 Juniper Networks Inc 918 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1016: ...Copyright 2010 Juniper Networks Inc 920 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 1163: ...CHAPTER 49 Operational Mode Commands for Virtual Chassis 1067 Copyright 2010 Juniper Networks Inc ...
Страница 1188: ...Copyright 2010 Juniper Networks Inc 1092 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 1323: ...CHAPTER 56 Operational Mode Commands for Interfaces 1227 Copyright 2010 Juniper Networks Inc ...
Страница 1378: ...Copyright 2010 Juniper Networks Inc 1282 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 1492: ...Copyright 2010 Juniper Networks Inc 1396 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1565: ...CHAPTER 63 Operational Mode Commands for Bridging and VLANs 1469 Copyright 2010 Juniper Networks Inc ...
Страница 1612: ...Copyright 2010 Juniper Networks Inc 1516 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1614: ...Copyright 2010 Juniper Networks Inc 1518 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 1730: ...Copyright 2010 Juniper Networks Inc 1634 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 1731: ...CHAPTER 69 Operational Mode Commands for Spanning Tree Protocols 1635 Copyright 2010 Juniper Networks Inc ...
Страница 1760: ...Copyright 2010 Juniper Networks Inc 1664 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 2106: ...Copyright 2010 Juniper Networks Inc 2010 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2107: ...CHAPTER 74 Operational Commands for Layer 3 Protocols 2011 Copyright 2010 Juniper Networks Inc ...
Страница 2408: ...Copyright 2010 Juniper Networks Inc 2312 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 2418: ...Copyright 2010 Juniper Networks Inc 2322 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 2438: ...Copyright 2010 Juniper Networks Inc 2342 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2517: ...CHAPTER 80 Operational Mode Commands for IGMP Snooping and Multicast 2421 Copyright 2010 Juniper Networks Inc ...
Страница 2618: ...Copyright 2010 Juniper Networks Inc 2522 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2643: ...Figure 51 Topology for Configuration 2547 Copyright 2010 Juniper Networks Inc Chapter 82 Examples Access Control Configuration ...
Страница 2732: ...Copyright 2010 Juniper Networks Inc 2636 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2841: ...CHAPTER 86 Operational Commands for 802 1X 2745 Copyright 2010 Juniper Networks Inc ...
Страница 2886: ...Copyright 2010 Juniper Networks Inc 2790 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2911: ...CHAPTER 92 Operational Mode Commands for Rate Limiting 2815 Copyright 2010 Juniper Networks Inc ...
Страница 2920: ...Copyright 2010 Juniper Networks Inc 2824 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 2944: ...Copyright 2010 Juniper Networks Inc 2848 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3081: ...CHAPTER 99 Operational Mode Commands for Port Security 2985 Copyright 2010 Juniper Networks Inc ...
Страница 3093: ...ge 0 0 13 0 100 voice 2997 Copyright 2010 Juniper Networks Inc Chapter 99 Operational Mode Commands for Port Security ...
Страница 3096: ...Copyright 2010 Juniper Networks Inc 3000 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 3217: ...CHAPTER 106 Operational Mode Commands for Firewall Filters 3121 Copyright 2010 Juniper Networks Inc ...
Страница 3240: ...Copyright 2010 Juniper Networks Inc 3144 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3268: ...Copyright 2010 Juniper Networks Inc 3172 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 3367: ...CHAPTER 113 Operational Mode Commands for CoS 3271 Copyright 2010 Juniper Networks Inc ...
Страница 3398: ...Copyright 2010 Juniper Networks Inc 3302 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 3422: ...Copyright 2010 Juniper Networks Inc 3326 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3435: ...CHAPTER 120 Operational Mode Commands for PoE 3339 Copyright 2010 Juniper Networks Inc ...
Страница 3444: ...Copyright 2010 Juniper Networks Inc 3348 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3446: ...Copyright 2010 Juniper Networks Inc 3350 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3529: ...CHAPTER 126 Operational Mode Commands for MPLS 3433 Copyright 2010 Juniper Networks Inc ...
Страница 3632: ...Copyright 2010 Juniper Networks Inc 3536 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3634: ...Copyright 2010 Juniper Networks Inc 3538 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
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Страница 3858: ...Copyright 2010 Juniper Networks Inc 3762 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3928: ...Copyright 2010 Juniper Networks Inc 3832 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...
Страница 3929: ...CHAPTER 135 Operational Mode Commands for General Network Management and Monitoring 3833 Copyright 2010 Juniper Networks Inc ...
Страница 3946: ...Copyright 2010 Juniper Networks Inc 3850 Complete Software Guide for Junos OS for EX Series Ethernet Switches Release 10 3 ...