Setting the Switch’s IP Address (IP Version 6)
4-17
4
Configuring Neighbor Detection Protocol and Static Entries
IPv6 Neighbor Discovery Protocol supersedes IPv4 Address Resolution Protocol in
IPv6 networks. IPv6 nodes on the same network segment use Neighbor Discovery
to discover each other's presence, to determine each other's link-layer addresses, to
find routers and to maintain reachability information about the paths to active
neighbors. The key parameters used to facilitate this process are the number of
attempts made to verify whether or not a duplicate address exists on the same
network segment, and the interval between neighbor solicitations used to verify
reachability information.
Command Attributes
Protocol Settings
•
VLAN
– VLAN ID (Range: 1-4093)
•
IPv6 ND DAD Attempts
– The number of consecutive neighbor solicitation
messages sent on an interface during duplicate address detection. (Range: 0-600,
Default: 1)
- Configuring a value of 0 disables duplicate address detection.
- Duplicate address detection determines if a new unicast IPv6 address already
exists on the network before it is assigned to an interface.
- Duplicate address detection is stopped on any interface that has been
suspended (see "Creating VLANs" on page 11-6). While an interface is
suspended, all unicast IPv6 addresses assigned to that interface are placed in a
“pending” state. Duplicate address detection is automatically restarted when the
interface is administratively re-activated.
- An interface that is re-activated restarts duplicate address detection for all
unicast IPv6 addresses on the interface. While duplicate address detection is
performed on the interface’s link-local address, the other IPv6 addresses remain
in a “tentative” state. If no duplicate link-local address is found, duplicate address
detection is started for the remaining IPv6 addresses.
- If a duplicate address is detected, it is set to “duplicate” state, and a warning
message is sent to the console. If a duplicate link-local address is detected, IPv6
processes are disabled on the interface. If a duplicate global unicast address is
detected, it is not used. All configuration commands associated with a duplicate
address remain configured while the address is in “duplicate” state.
- If the link-local address for an interface is changed, duplicate address detection
is performed on the new link-local address, but not for any of the IPv6 global
unicast addresses already associated with the interface.
•
IPv6 ND NS Interval
– The interval between transmitting IPv6 neighbor solicitation
messages on an interface. (Range: 1000-3600000 milliseconds;
Default: 1000 milliseconds is used for neighbor discovery operations,
0 milliseconds is advertised in router advertisements)
- This attribute specifies the interval between transmitting neighbor solicitation
messages when resolving an address, or when probing the reachability of a
neighbor. Therefore, avoid using very short intervals for normal IPv6 operations.
Summary of Contents for 8926EM
Page 6: ...ii ...
Page 34: ...Getting Started ...
Page 44: ...Introduction 1 10 1 ...
Page 62: ...Initial Configuration 2 18 2 ...
Page 64: ...Switch Management ...
Page 76: ...Configuring the Switch 3 12 3 ...
Page 118: ...Basic Management Tasks 4 42 4 ...
Page 164: ...User Authentication 6 28 6 ...
Page 176: ...Access Control Lists 7 12 7 ...
Page 284: ...Quality of Service 14 8 14 ...
Page 294: ...Multicast Filtering 15 10 15 ...
Page 300: ...Domain Name Service 16 6 16 ...
Page 310: ...Dynamic Host Configuration Protocol 17 10 17 ...
Page 320: ...Configuring Router Redundancy 18 10 18 ...
Page 344: ...IP Routing 19 24 19 ...
Page 356: ...Unicast Routing 20 12 20 Web Click Routing Protocol RIP Statistics Figure 20 5 RIP Statistics ...
Page 386: ...Unicast Routing 20 42 20 ...
Page 388: ...Command Line Interface ...
Page 400: ...Overview of the Command Line Interface 21 12 21 ...
Page 466: ...SNMP Commands 24 16 24 ...
Page 520: ...Access Control List Commands 26 18 26 ...
Page 546: ...Rate Limit Commands 30 2 30 ...
Page 612: ...VLAN Commands 34 24 34 ...
Page 626: ...Class of Service Commands 35 14 35 ...
Page 670: ...DHCP Commands 39 16 39 ...
Page 716: ...IP Interface Commands 41 36 41 ...
Page 768: ...IP Routing Commands 42 52 42 ...
Page 770: ...Appendices ...
Page 791: ......