Configuring IPv6 Reply or Ignore Echo Requests
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 17-28
Reply or Ignore Echo Requests
By default, the switch will reply to all echo requests, including those sent to anycast or multicast
addresses. The ipv6 echo command can be used to configure the switch to ignore echo requests sent to
anycast or multicast addresses.
Use the ipv6 echo command to reply to multicast or any echo requests:
-> ipv6 echo multicast
-> ipv6 echo anycast
Use no option in ipv6 echo command to ignore reply to anycast or multicast echo requests.
-> no ipv6 echo anycast
ICMPv6 Error Message Rate Limiting
The ipv6 icmp rate-limit command configures the rate limit interval and maximum burst size. This
command configures the maximum number of ICMPv6 error messages that may be sent in one burst,
regardless of the interval, per-VRF basis.
AOS uses the token bucket method for rate limiting ICMPv6 error messages on a per-interface basis.
Tokens are added to an interface’s bucket at the specified rate limit interval up to the maximum burst
value. When an ICMPv6 error message needs to be sent, a token is removed from the bucket. If a token
was available the message is sent, otherwise it is discarded.
-> ipv6 icmp rate-limit interval 100
-> ipv6 icmp rate-limit burst 20
Use no option to disable the ICMPv6 error message rate limiting.
-> no ipv6 icmp rate-limit
The show ipv6 information command displays the ICMPv6 rate limit values.
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