Specifying The Source Address For Icmpv6 Packets; Displaying And Maintaining Ipv6 Basics - H3C MSR 2600 Configuration Manual

The interface receiving the packet is the interface forwarding the packet.
•
• The selected route is not created or modified by any ICMPv6 redirect message.
The selected route is not a default route.
•
The forwarded packet does not contain the routing extension header.
•
The ICMPv6 redirect function simplifies host management by enabling hosts that hold few routes to
gradually optimize their routing table. However, to avoid adding too many routes on hosts, this function
is disabled by default.
To enable sending ICMPv6 redirect messages:
Step
1. Enter system view.
2. Enable sending ICMPv6 redirect
messages.

Specifying the source address for ICMPv6 packets

Perform this task to specify the source IPv6 address for outgoing ping echo request and ICMPv6 error
messages. It is a good practice to specify the IPv6 address of the loopback interface as the source IPv6
address. This feature helps users to locate the sending device easily.
If you specify an IP address in the ping command, ping echo requests use the specified address as the
source IP address rather than the IP address specified by the ipv6 icmpv6 source command.
To specify the source IPv6 address for ICMPv6 packets:
Step
1. Enter system view.
2. Specify an IPv6 address as the
source address for outgoing
ICMPv6 packets.

Displaying and maintaining IPv6 basics

Execute display commands in any view and reset commands in user view.
Task
Display IPv6 FIB entries.
Display IPv6 information about the
interface.
Display IPv6 prefix information about the
interface.
Command
system-view
ipv6 redirects enable
Command
system-view
ipv6 icmpv6 source [ vpn-instance
vpn-instance-name ] ipv6-address
Command
display ipv6 fib [ vpn-instance vpn-instance-name ] [ ipv6-address
[ prefix-length ] ]
display ipv6 interface [ interface-type [ interface-number ] ] [ brief ]
display ipv6 interface interface-type interface-number prefix
196
Remarks
N/A
By default, sending ICMPv6
redirect messages is disabled.
Remarks
N/A
By default, the device uses the
IPv6 address of the sending
interface as the source IPv6
address for outgoing ICMPv6
packets.