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icmpv6-flood detect ipv6
Use
icmpv6-flood detect ipv6
to configure IPv6 address-specific ICMPv6 flood attack detection.
Use
undo icmpv6-flood detect ipv6
to remove the IPv6 address-specific ICMPv6 flood attack
detection configuration.
Syntax
icmpv6-flood detect ipv6 ipv6-address
[
vpn-instance vpn-instance-name
] [
threshold
threshold-value
] [
action
{ {
drop
|
logging
} * |
none
} ]
undo icmpv6-flood detect ipv6 ipv6-address
[
vpn-instance vpn-instance-name
]
Default
IPv6 address-specific ICMPv6 flood attack detection is not configured.
Views
Attack defense policy view
Predefined user roles
network-admin
mdc-admin
Parameters
Ipv6-address
: Specifies the IPv6 address to be protected.
vpn-instance vpn-instance-name
: Specifies the MPLS L3VPN instance to which the protected IPv6
address belongs. The
vpn-instance-name
argument is a case-sensitive string of 1 to 31 characters.
Do not specify this option if the protected IPv6 address is on the public network.
threshold
threshold-value
: Specifies the threshold for triggering ICMPv6 flood attack prevention.
The value range is 1 to 1000000 in units of ICMPv6 packets sent to the specified IP address per
second.
action
: Specifies the actions when an ICMPv6 flood attack is detected. If no action is specified, the
global actions set by the
icmpv6-flood action
command apply.
drop
: Drops subsequent ICMPv6 packets destined for the protected IPv6 address.
logging
: Enables logging for ICMPv6 flood attack events.
none
: Takes no action.
Usage guidelines
With ICMPv6 flood attack detection configured for an IPv6 address, the device is in attack detection
state. When the sending rate of ICMPv6 packets to the IPv6 address reaches the threshold, the
device enters prevention state and takes the specified actions. When the rate is below the silence
threshold (three-fourths of the threshold), the device returns to the attack detection state.
You can configure ICMPv6 flood attack detection for multiple IPv6 addresses in one attack defense
policy.
Examples
# Configure ICMPv6 flood attack detection for 2012::12 in attack defense policy
atk-policy-1
.
<Sysname> system-view
[Sysname] attack-defense policy atk-policy-1
[Sysname-attack-defense-policy-atk-policy-1] icmpv6-flood detect ipv6 2012::12 threshold
2000