Configuring ICMPv6 Message Control

In ICMPv6 message control, the token bucket algorithm is adopted, and one token represents one ICMPv6 message. Tokens are placed in the virtual bucket at fixed intervals until the capacity of the token bucket reaches the upper threshold. If the number of ICMPv6 messages exceeds the upper threshold, extra messages are discarded.

Pre-configuration Tasks

Before configuring ICMPv6 message control, complete the following tasks:

Connect interfaces and configure physical parameters for the interfaces to ensure that the physical status of the interfaces is Up.
Configure link layer protocol parameters for the interfaces to ensure that the link layer protocol status of the interfaces is Up.
Configure IPv6 addresses for interfaces.

Procedure

Run system-view
The system view is displayed.
Run ipv6 icmp-error { bucket bucket-size | ratelimit interval } ^*
The ICMPv6 error message transmission interval is set.
(Optional) Run undo ipv6 icmp { icmpv6-type icmpv6-code | icmpv6-name | all-famous } send
The system is disabled from sending ICMPv6 messages.
(Optional) Run undo ipv6 icmp { icmpv6-type icmpv6-code | icmpv6-name | all-famous } receive
The system is disabled from accepting ICMPv6 messages.
(Optional) Run undo ipv6 icmp too-big-rate-limit
The device is disabled from suppressing ICMPv6 Packet Too Big messages.
(Optional) Run ipv6 icmp multicast-address echo receive disable
The device is disabled from responding to received ICMPv6 multicast Echo messages.
(Optional) Run interface interface-type interface-number
The interface view is displayed.
(Optional) Run undo ipv6 icmp hop-limit-exceeded send
An interface is disabled from sending ICMPv6 Hop Limit Exceeded messages.
(Optional) Run undo ipv6 icmp host-unreachable send
An interface is disabled from sending ICMPv6 Host Unreachable messages.
(Optional) Run undo ipv6 icmp port-unreachable send
An interface is disabled from sending ICMPv6 Port Unreachable messages.
(Optional) Run ipv6 icmp multicast-address echo receive disable
The device is disabled from responding to received ICMPv6 multicast Echo messages.
Run commit
The configuration is committed.

Verifying the Configuration of ICMPv6 Message Control

After configuring ICMPv6 message control, verify the configuration.

Run the display ipv6 interface [ interface-type interface-number | brief ] command to check IPv6 configurations on an interface.
Run the display icmpv6 statistics [ interface-type interface-number ] command to check statistics about ICMPv6 traffic on an interface.