reset nd snooping user-bind
Function
The reset nd snooping user-bind command clears ND snooping dynamic binding entries on the device.
Format
reset nd snooping user-bind [ interface interface-type interface-number | ipv6-address ipv6-address | mac-address mac-address | vlan vlan-id | bridge-domain bd-id ]
Only the S5720-HI, S5730-HI, S6720-HI, S6730-H, S6730S-H, S6730-S, S6730S-S, S5732-H, S5731-S, S5731S-S, S5731S-H, S5731-H, S6720-EI, and S6720S-EI support the bridge-domain parameter.
Parameters
Parameter |
Description |
Value |
|---|---|---|
interface interface-type interface-number |
Specifies the interface in the ND snooping dynamic binding entry to be cleared.
|
- |
ipv6-address ipv6-address |
Specifies the IPv6 address in the ND snooping dynamic binding entry to be cleared. |
The value is a 32-digit hexadecimal number in X:X:X:X:X:X:X:X format. |
mac-address mac-address |
Specifies the MAC address in the ND snooping dynamic binding entry to be cleared. |
The value is in the format of H-H-H. An H is a hexadecimal number of 1 to 4 digits. |
vlan vlan-id |
Specifies the VLAN ID in the ND snooping dynamic binding entry to be cleared. |
The value is an integer ranging from 1 to 4094. |
bridge-domain bd-id |
Specifies the BD ID in the ND snooping dynamic binding entry to be cleared. |
The value is an integer ranging from 1 to 16777215. |
Usage Guidelines
You need to manually delete ND snooping dynamic binding entries if the following requirements are met:
- The ND snooping dynamic binding entry does not reach the aging time, so the entry cannot age automatically.
- The user is no longer connected to the network.
- The user VLAN or interface information changes.
The networking environment change may lead to the change in the VLAN or interface information, while the ND snooping dynamic binding entry mapping a user does not age out and cannot update in real time. As a result, the device discards valid ND packets that do not match the old ND snooping dynamic binding entries. Before changing the networking environment, clear all ND snooping dynamic binding entries manually so that a device generates a new ND snooping dynamic binding table based on the new networking environment.
Example
# Delete the ND snooping dynamic binding entry that contains the IPv6 address being fc00:1::1.
<HUAWEI> reset nd snooping user-bind ipv6-address fc00:1::1
# Delete the ND snooping dynamic binding entry that contains the MAC address being 00e0-1111-2222.
<HUAWEI> reset nd snooping user-bind mac-address 00e0-1111-2222