494 | IPv6 Addressing
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Figure 22-3. NDP Router Redistribution
IPv6 Neighbor Discovery of MTU packets
With FTOS 8.3.1.0, you can set the MTU advertised through the RA packets to incoming routers, without
altering the actual MTU setting on the interface. The
ip nd mtu command sets the value advertised to
routers. It does not set the actual MTU rate. For example, if
ip nd mtu is set to 1280, the interface will still
pass 1500-byte packets, if that is what is set with the
mtu command.
Advertise Neighbor Prefixes
Specify which IPv6 prefixes are include in Neighbor Advertisements. By default, all prefixes configured as
addresses on the interface are advertised. You can control the advertise parameters per prefix; the
default
keyword can be used to use the default parameters for all prefixes.
QoS for IPv6
IPv6 QoS is supported on platforms: c e s
Command Syntax Command Mode Purpose
ipv6 nd prefix {ipv6-address/prefix-length> |
default} [no-advertise] | [no-autoconfig]
[no-rtr-address] [off-link] [lifetime {valid |
infinite} {preferred | infinite}]
INTERFACE Specify which IPv6 prefixes are
include in Neighbor
Advertisements.
Network 2001:db8::1428:57ab
Network 2001:db8::1428:57ab
Router C
Router A
Router B
Send a Packet to
Network 2001:db8::1428:57ab
Local Link
Packet Destination (2001:db8::1428:57ab)
ICMPv6 Redirect (Data: Use Router C)
Packet Destination (Destination 2001:db8::1428:57ab)