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C
HAPTER
25
| General Security Measures
ARP Inspection
– 755 –
ip arp inspection
validate
This command specifies additional validation of address components in an
ARP packet. Use the
no
form to restore the default setting.
S
YNTAX
ip arp inspection validate
{
dst-mac
[
ip
] [
src-mac
] |
ip
[
src-mac
] |
src-mac
}
no ip arp inspection validate
dst-mac
- Checks the destination MAC address in the Ethernet
header against the target MAC address in the ARP body. This check
is performed for ARP responses. When enabled, packets with
different MAC addresses are classified as invalid and are dropped.
ip
- Checks the ARP body for invalid and unexpected IP addresses.
Addresses include 0.0.0.0, 255.255.255.255, and all IP multicast
addresses. Sender IP addresses are checked in all ARP requests and
responses, while target IP addresses are checked only in ARP
responses.
src-mac
- Checks the source MAC address in the Ethernet header
against the sender MAC address in the ARP body. This check is
performed on both ARP requests and responses. When enabled,
packets with different MAC addresses are classified as invalid and
are dropped.
D
EFAULT
S
ETTING
No additional validation is performed
C
OMMAND
M
ODE
Global Configuration
C
OMMAND
U
SAGE
By default, ARP Inspection only checks the IP-to-MAC address bindings
specified in an ARP ACL or in the DHCP Snooping database.
E
XAMPLE
Console(config)#ip arp inspection validate dst-mac
Console(config)#
ip arp inspection
vlan
This command enables ARP Inspection for a specified VLAN or range of
VLANs. Use the
no
form to disable this function.
S
YNTAX
[
no
]
ip arp inspection vlan
{
vlan-id
|
vlan-range
}
vlan-id
- VLAN ID. (Range: 1-4093)
vlan-range
- A consecutive range of VLANs indicated by the use a
hyphen, or a random group of VLANs with each entry separated by
a comma.
Содержание DG-FS4526E
Страница 4: ...ABOUT THIS GUIDE 4...
Страница 34: ...CONTENTS 34...
Страница 50: ...TABLES 50...
Страница 52: ...SECTION I Getting Started 52...
Страница 62: ...CHAPTER 1 Introduction System Defaults 62...
Страница 80: ...CHAPTER 2 Initial Switch Configuration Managing System Files 80...
Страница 82: ...SECTION II Web Configuration 82...
Страница 100: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 100...
Страница 128: ...CHAPTER 4 Basic Management Tasks Resetting the System 128...
Страница 166: ...CHAPTER 5 Interface Configuration VLAN Trunking 166...
Страница 198: ...CHAPTER 6 VLAN Configuration Configuring VLAN Mirroring 198...
Страница 516: ...CHAPTER 17 IP Services Displaying the DNS Cache 516...
Страница 562: ...CHAPTER 19 Using the Command Line Interface CLI Command Groups 562...
Страница 652: ...CHAPTER 22 SNMP Commands 652...
Страница 660: ...CHAPTER 23 Remote Monitoring Commands 660...
Страница 714: ...CHAPTER 24 Authentication Commands Management IP Filter 714...
Страница 802: ...CHAPTER 27 Interface Commands 802...
Страница 824: ...CHAPTER 29 Port Mirroring Commands RSPAN Mirroring Commands 824...
Страница 846: ...CHAPTER 32 Address Table Commands 846...
Страница 874: ...CHAPTER 33 Spanning Tree Commands 874...
Страница 886: ...CHAPTER 34 ERPS Commands 886...
Страница 928: ...CHAPTER 35 VLAN Commands Configuring Voice VLANs 928...
Страница 942: ...CHAPTER 36 Class of Service Commands Priority Commands Layer 3 and 4 942...
Страница 998: ...CHAPTER 38 Multicast Filtering Commands Multicast VLAN Registration 998...
Страница 1022: ...CHAPTER 39 LLDP Commands 1022...
Страница 1064: ...CHAPTER 40 CFM Commands 1064...
Страница 1084: ...CHAPTER 42 Domain Name Service Commands 1084...
Страница 1090: ...CHAPTER 43 DHCP Commands DHCP Client 1090...
Страница 1122: ...CHAPTER 44 IP Interface Commands IPv6 Interface 1122...
Страница 1124: ...SECTION IV Appendices 1124...
Страница 1129: ...APPENDIX A Software Specifications Management Information Bases 1129 Trap RFC 1215 UDP MIB RFC 2013...
Страница 1130: ...APPENDIX A Software Specifications Management Information Bases 1130...
Страница 1152: ...COMMAND LIST 1152...
Страница 1161: ......
Страница 1162: ...DG FS4526E 042012 HW R01...