Chapter 27
| IP Interface Commands
IPv6 Interface
– 663 –
Interface Address Configuration and Utilities
ipv6 default-gateway
This command sets an IPv6 default gateway to use for
destinations
with no known
next hop. Use the
no
form to remove a previously configured default gateway.
Syntax
ipv6 default-gateway
ipv6-address
no ipv6 address
ipv6-address - The IPv6 address of the default next hop router to use for
destinations with no known next hop.
Default Setting
No default gateway is defined
Command Mode
Global Configuration
Command Usage
◆
All IPv6 addresses must be 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.
◆
The same link-local address may be used by different interfaces/nodes in
different zones (RFC 4007). Therefore, when specifying a link-local address,
include zone-id information indicating the VLAN identifier after the % delimiter.
For example, FE80::7272%1 identifies VLAN 1 as the interface.
◆
An IPv6 default gateway should be defined if the destination has been assigned
an IPv6 address that is located in a different IP segment.
traceroute6 Shows the route packets take to the specified host PE
Neighbor Discovery
ipv6 nd dad attempts Configures the number of consecutive neighbor
solicitation messages sent on an interface during duplicate
address detection
IC
ipv6 nd ns-interval Configures the interval between IPv6 neighbor solicitation
retransmissions on an interface
IC
ipv6 nd reachable-time Configures the amount of time that a remote IPv6 node is
considered reachable after some reachability confirmation
event has occurred
IC
clear ipv6 neighbors Deletes all dynamic entries in the IPv6 neighbor discovery
cache
PE
show ipv6 neighbors Displays information in the IPv6 neighbor discovery cache PE
Table 139: IPv6 Configuration Commands (Continued)
Command Function Mode
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