
Chapter 9
| General Security Measures
ARP Inspection
– 343 –
.
.
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show ipv6 source-
guard binding
This command shows the IPv6 source guard binding table.
Syntax
show ipv6 source-guard binding
[
dynamic
|
static
]
dynamic
- Shows dynamic entries configured with ND Snooping or
DHCPv6 Snooping commands (see
static
- Shows static entries configured with the
command.
Command Mode
Privileged Exec
Example
Console#show ipv6 source-guard binding
MAC Address IPv6 Address VLAN Interface Type
-------------- --------------------------------------- ---- --------- ----
00AB-11CD-2345 2001::1 1 Eth 1/5 STA
Console#
ARP Inspection
ARP Inspection validates the MAC-to-IP address bindings in Address Resolution
Protocol (ARP) packets. It protects against ARP traffic with invalid address bindings,
which forms the basis for certain “man-in-the-middle” attacks. This is accomplished
by intercepting all ARP requests and responses and verifying each of these packets
before the local ARP cache is updated or the packet is forwarded to the appropriate
destination, dropping any invalid ARP packets.
ARP Inspection determines the validity of an ARP packet based on valid IP-to-MAC
address bindings stored in a trusted database – the DHCP snooping binding
database. ARP Inspection can also validate ARP packets against user-configured
ARP access control lists (ACLs) for hosts with statically configured IP addresses.
This section describes commands used to configure ARP Inspection.
Table 64: ARP Inspection Commands
Command
Function
Mode
Enables ARP Inspection globally on the switch
GC
Specifies an ARP ACL to apply to one or more VLANs
GC
ip arp inspection log-buffer
logs
Sets the maximum number of entries saved in a log
message, and the rate at these messages are sent
GC
Содержание ECS4120-28F
Страница 36: ...Contents 36...
Страница 38: ...Figures 38...
Страница 46: ...Section I Getting Started 46...
Страница 70: ...Chapter 1 Initial Switch Configuration Setting the System Clock 70...
Страница 86: ...Chapter 2 Using the Command Line Interface CLI Command Groups 86...
Страница 202: ...Chapter 5 SNMP Commands Additional Trap Commands 202...
Страница 210: ...Chapter 6 Remote Monitoring Commands 210...
Страница 216: ...Chapter 7 Flow Sampling Commands 216...
Страница 278: ...Chapter 8 Authentication Commands PPPoE Intermediate Agent 278...
Страница 360: ...Chapter 9 General Security Measures Port based Traffic Segmentation 360...
Страница 384: ...Chapter 10 Access Control Lists ACL Information 384...
Страница 424: ...Chapter 11 Interface Commands Power Savings 424...
Страница 446: ...Chapter 13 Power over Ethernet Commands 446...
Страница 456: ...Chapter 14 Port Mirroring Commands RSPAN Mirroring Commands 456...
Страница 488: ...Chapter 17 UniDirectional Link Detection Commands 488...
Страница 494: ...Chapter 18 Address Table Commands 494...
Страница 554: ...Chapter 20 ERPS Commands 554...
Страница 620: ...Chapter 22 Class of Service Commands Priority Commands Layer 3 and 4 620...
Страница 638: ...Chapter 23 Quality of Service Commands 638...
Страница 772: ...Chapter 25 LLDP Commands 772...
Страница 814: ...Chapter 26 CFM Commands Delay Measure Operations 814...
Страница 826: ...Chapter 27 OAM Commands 826 1 1 00 12 CF 6A 07 F6 000084 Enabled Disabled Enabled Disabled Console...
Страница 836: ...Chapter 28 Domain Name Service Commands 836...
Страница 848: ...Chapter 29 DHCP Commands DHCP Relay Option 82 848...
Страница 902: ...Section III Appendices 902...
Страница 916: ...Glossary 916...
Страница 926: ...CLI Commands 926...
Страница 937: ......
Страница 938: ...E092017 CS R02...