C
HAPTER
24
| General Security Measures
DHCPv6 Snooping
– 923 –
C
OMMAND
U
SAGE
◆
A trusted interface is an interface that is configured to receive only
messages from within the network. An untrusted interface is an
interface that is configured to receive messages from outside the
network or fire wall.
◆
Set all ports connected to DHCv6 servers within the local network or
fire wall to trusted, and all other ports outside the local network or fire
wall to untrusted.
◆
When DHCPv6 snooping is enabled globally using the
ipv6 dhcp
snooping
command, and enabled on a VLAN with
ipv6 dhcp snooping
vlan
command, DHCPv6 packet filtering will be performed on any
untrusted ports within the VLAN according to the default status, or as
specifically configured for an interface with the
no ipv6 dhcp
snooping trust
command.
◆
When an untrusted port is changed to a trusted port, all the dynamic
DHCPv6 snooping bindings associated with this port are removed.
◆
Additional considerations when the switch itself is a DHCPv6 client
–
The port(s) through which it submits a client request to the DHCPv6
server must be configured as trusted.
E
XAMPLE
This example sets port 5 to untrusted.
Console(config)#interface ethernet 1/5
Console(config-if)#no ipv6 dhcp snooping trust
Console(config-if)#
R
ELATED
C
OMMANDS
ipv6 dhcp snooping (917)
ipv6 dhcp snooping vlan (921)
clear ipv6 dhcp
snooping binding
This command clears DHCPv6 snooping binding table entries from RAM.
Use this command without any optional keywords to clear all entries from
the binding table.
S
YNTAX
clear ipv6 dhcp snooping binding
[
mac-address ipv6-address
]
mac-address
- Specifies a MAC address entry.
(Format: xx-xx-xx-xx-xx-xx)
ipv6-address
- Corresponding IPv6 address. This address must be
entered according to RFC 2373 “IPv6 Addressing Architecture,”
using 8 colon-separated 16-bit hexadecimal values. One double
colon may be used in the address to indicate the appropriate
number of zeros required to fill the undefined fields.
Summary of Contents for ECS3510-10PD
Page 1: ...Management Guide www edge core com 10 Port Layer 2 Fast Ethernet Switch...
Page 2: ......
Page 4: ......
Page 48: ...CONTENTS 48...
Page 68: ...SECTION I Getting Started 68...
Page 78: ...CHAPTER 1 Introduction System Defaults 78...
Page 96: ...CHAPTER 2 Initial Switch Configuration Managing System Files 96...
Page 98: ...SECTION II Web Configuration 98...
Page 118: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 118...
Page 150: ...CHAPTER 4 Basic Management Tasks Resetting the System 150...
Page 196: ...CHAPTER 5 Interface Configuration VLAN Trunking 196 Figure 66 Configuring VLAN Trunking...
Page 238: ...CHAPTER 7 Address Table Settings Configuring MAC Address Mirroring 238...
Page 264: ...CHAPTER 8 Spanning Tree Algorithm Configuring Interface Settings for MSTP 264...
Page 274: ...CHAPTER 9 Congestion Control Automatic Traffic Control 274...
Page 288: ...CHAPTER 10 Class of Service Layer 3 4 Priority Settings 288...
Page 304: ...CHAPTER 11 Quality of Service Attaching a Policy Map to a Port 304...
Page 424: ...CHAPTER 13 Security Measures DHCP Snooping 424...
Page 568: ...CHAPTER 14 Basic Administration Protocols OAM Configuration 568...
Page 596: ...CHAPTER 15 IP Configuration Setting the Switch s IP Address IP Version 6 596...
Page 614: ...CHAPTER 1 IP Services Configuring the PPPoE Intermediate Agent 614...
Page 784: ...CHAPTER 20 System Management Commands Powered Device 784...
Page 814: ...CHAPTER 22 Remote Monitoring Commands 814...
Page 1008: ...CHAPTER 26 Interface Commands Power Savings 1008...
Page 1022: ...CHAPTER 27 Link Aggregation Commands Trunk Status Display Commands 1022...
Page 1052: ...CHAPTER 29 Congestion Control Commands Automatic Traffic Control Commands 1052...
Page 1064: ...CHAPTER 31 UniDirectional Link Detection Commands 1064...
Page 1070: ...CHAPTER 32 Address Table Commands 1070...
Page 1130: ...CHAPTER 34 ERPS Commands 1130...
Page 1172: ...CHAPTER 35 VLAN Commands Configuring Voice VLANs 1172...
Page 1186: ...CHAPTER 36 Class of Service Commands Priority Commands Layer 3 and 4 1186...
Page 1302: ...CHAPTER 38 Multicast Filtering Commands MVR for IPv6 1302...
Page 1368: ...CHAPTER 40 CFM Commands Delay Measure Operations 1368...
Page 1390: ...CHAPTER 42 Domain Name Service Commands 1390...
Page 1448: ...CHAPTER 44 IP Interface Commands ND Snooping 1448...
Page 1450: ...SECTION IV Appendices 1450...
Page 1455: ...APPENDIX A Software Specifications Management Information Bases 1455 UDP MIB RFC 2013...
Page 1456: ...APPENDIX A Software Specifications Management Information Bases 1456...
Page 1482: ...COMMAND LIST 1482...
Page 1493: ......