Configuring ICMPv6 Attributes

If many ICMPv6 error packets are sent on the network within a short period, network congestion may occur. To prevent this situation, you can set the maximum number of ICMPv6 error packets that can be sent within a specified period.

Context

ICMPv6 error packets can be classified into the following types:

Destination unreachable error packet

Unreachable destination packets are as follows:
- No route to the destination
- Address unreachable
- Port unreachable
  
  Only port unreachable messages are supported.
Datagram Too Big message
Timeout error packet
Parameter error packet
Route redirection packet

Procedure

Access the system view.
```
system-view
```
Disable the function of sending ICMPv6 route redirection packets or set the rate for sending ICMPv6 error packets.
- To disable the function of sending ICMPv6 route redirection packets, run the undo firewall icmpv6-error enable command.
- To set the rate for sending ICMPv6 error packets, run the ipv6 icmp-error { bucket bucket-size | ratelimit interval } ^* command.