
C
HAPTER
49
| IP Interface Commands
ND Snooping
– 1704 –
ND S
NOOPING
Neighbor Discover (ND) Snooping maintains an IPv6 prefix table and user
address binding table. These tables can be used for stateless address auto-
configuration or for address filtering by IPv6 Source Guard.
ND snooping maintains a binding table in the process of neighbor
discovery. When it receives an Neighbor Solicitation (NS) packet from a
host, it creates a new binding. If it subsequently receives a Neighbor
Advertisement (NA) packet, this means that the address is already being
used by another host, and the binding is therefore deleted. If it does not
receive an NA packet after a timeout period, the binding will be bound to
the original host. ND snooping can also maintain a prefix table used for
stateless address auto-configuration by monitoring Router Advertisement
(RA) packets sent from neighboring routers.
ND snooping can also detect if an IPv6 address binding is no longer valid.
When a binding has been timed out, it checks to see if the host still exists
by sending an NS packet to the target host. If it receives an NA packet in
response, it knows that the target still exists and updates the lifetime of
the binding; otherwise, it deletes the binding.
This section describes commands used to configure ND Snooping.
Table 244: ND Snooping Commands
Command
Function
Mode
Enables ND snooping globally or on a specified VLAN
or range of VLANs
GC
Enables automatic validation of binding table entries
by periodically sending NS messages and awaiting
NA replies
GC
Sets the number of times to send an NS message to
determine if a binding is still valid
GC
Sets the interval between sending NS messages to
determine if a binding is still valid
GC
Sets the time to wait for an RA message before
deleting an entry in the prefix table
GC
Sets the maximum number of address entries which
can be bound to a port
IC
Configures a port as a trusted interface from which
prefix information in RA messages can be added to
the prefix table, or NS messages can be forwarded
without validation
IC
Clears all entries in the address binding table
PE
Clears all entries in the prefix table
PE
Shows configuration settings for ND snooping
PE
Shows entries in the binding table
PE
Show entries in the prefix table
PE
Содержание ECS4660-28F
Страница 1: ...Management Guide www edge core com ECS4660 28F Layer 3 Gigabit Ethernet Switch...
Страница 2: ......
Страница 4: ......
Страница 12: ...ABOUT THIS GUIDE 12...
Страница 64: ...CONTENTS 64...
Страница 90: ...TABLES 90...
Страница 92: ...SECTION I Getting Started 92...
Страница 122: ...SECTION II Web Configuration 122 Multicast Routing on page 825...
Страница 148: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 148...
Страница 224: ...CHAPTER 5 Interface Configuration VLAN Trunking 224 Figure 68 Configuring VLAN Trunking...
Страница 262: ...CHAPTER 6 VLAN Configuration Configuring VLAN Translation 262...
Страница 304: ...CHAPTER 9 Congestion Control Automatic Traffic Control 304...
Страница 340: ...CHAPTER 11 Quality of Service Attaching a Policy Map to a Port 340...
Страница 452: ...CHAPTER 13 Security Measures DHCP Snooping 452...
Страница 740: ...CHAPTER 17 IP Services Configuring the PPPoE Intermediate Agent 740...
Страница 866: ...CHAPTER 21 Multicast Routing Configuring PIMv6 for IPv6 866...
Страница 882: ...CHAPTER 22 Using the Command Line Interface CLI Command Groups 882...
Страница 1024: ...CHAPTER 26 Remote Monitoring Commands 1024...
Страница 1030: ...CHAPTER 27 Flow Sampling Commands 1030...
Страница 1088: ...CHAPTER 28 Authentication Commands PPPoE Intermediate Agent 1088...
Страница 1162: ...CHAPTER 29 General Security Measures Configuring Port based Traffic Segmentation 1162...
Страница 1186: ...CHAPTER 30 Access Control Lists ACL Information 1186...
Страница 1214: ...CHAPTER 31 Interface Commands Transceiver Threshold Configuration 1214...
Страница 1238: ...CHAPTER 33 Port Mirroring Commands RSPAN Mirroring Commands 1238...
Страница 1258: ...CHAPTER 34 Congestion Control Commands Automatic Traffic Control Commands 1258...
Страница 1270: ...CHAPTER 36 UniDirectional Link Detection Commands 1270...
Страница 1276: ...CHAPTER 37 Address Table Commands 1276...
Страница 1336: ...CHAPTER 39 ERPS Commands 1336...
Страница 1386: ...CHAPTER 40 VLAN Commands Configuring Voice VLANs 1386...
Страница 1406: ...CHAPTER 41 Class of Service Commands Priority Commands Layer 3 and 4 1406...
Страница 1424: ...CHAPTER 42 Quality of Service Commands 1424...
Страница 1536: ...CHAPTER 43 Multicast Filtering Commands MLD Proxy Routing 1536...
Страница 1602: ...CHAPTER 45 CFM Commands Delay Measure Operations 1602...
Страница 1624: ...CHAPTER 47 Domain Name Service Commands 1624...
Страница 1646: ...CHAPTER 48 DHCP Commands DHCP Server 1646...
Страница 1974: ...SECTION IV Appendices 1974...
Страница 1980: ...APPENDIX A Software Specifications Management Information Bases 1980...
Страница 2020: ...ECS4660 28F E102013 ST R03 149100000140A...