HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Services Command Referen - Page 203

ipv6 unreachables enable, reset ipv6 neighbors

Page 203 highlights

ipv6 unreachables enable Use ipv6 unreachables enable to enable sending ICMPv6 destination unreachable packets. Use undo ipv6 unreachables to disable sending ICMPv6 destination unreachable packets. Syntax ipv6 unreachables enable undo ipv6 unreachables enable Default Sending ICMPv6 destination unreachable packets is disabled. Views System view Predefined user roles network-admin Usage guidelines If the device fails to forward a received IPv6 packet because of a destination unreachable error, it drops the packet and sends a corresponding ICMPv6 Destination Unreachable error message to the source. If the device is generating ICMPv6 destination unreachable messages abnormally, disable sending ICMPv6 destination unreachable packets to prevent attack risks. Examples # Enable sending ICMPv6 destination unreachable packets. system-view [Sysname] ipv6 unreachables enable reset ipv6 neighbors Use reset ipv6 neighbors to clear IPv6 neighbor information. Syntax reset ipv6 neighbors { all | dynamic | interface interface-type interface-number | slot slot-number | static } Views User view Predefined user roles network-admin Parameters all: Clears static and dynamic neighbor information for all interfaces. dynamic: Clears dynamic neighbor information for all interfaces. interface interface-type interface-number: Clears dynamic neighbor information for the interface specified by its type and number. 195

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195
ipv6 unreachables enable
Use
ipv6 unreachables enable
to enable sending ICMPv6 destination unreachable packets.
Use
undo ipv6 unreachables
to disable sending ICMPv6 destination unreachable packets.
Syntax
ipv6 unreachables enable
undo ipv6 unreachables enable
Default
Sending ICMPv6 destination unreachable packets is disabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
If the device fails to forward a received IPv6 packet because of a destination unreachable error, it drops
the packet and sends a corresponding ICMPv6 Destination Unreachable error message to the source.
If the device is generating ICMPv6 destination unreachable messages abnormally, disable sending
ICMPv6 destination unreachable packets to prevent attack risks.
Examples
# Enable sending ICMPv6 destination unreachable packets.
<Sysname> system-view
[Sysname] ipv6 unreachables enable
reset ipv6 neighbors
Use
reset ipv6 neighbors
to clear IPv6 neighbor information.
Syntax
reset ipv6 neighbors
{
all
|
dynamic
|
interface
interface-type interface-number
|
slot
slot-number
|
static
}
Views
User view
Predefined user roles
network-admin
Parameters
all
: Clears static and dynamic neighbor information for all interfaces.
dynamic
: Clears dynamic neighbor information for all interfaces.
interface
interface-type interface-number
: Clears dynamic neighbor information for the interface
specified by its type and number.