ipv6 nd neighbor-limit

Function

The ipv6 nd neighbor-limit command configures the maximum number of dynamic neighbor entries that can be learned by an interface.

The undo ipv6 nd neighbor-limit command restores the default maximum number of dynamic neighbor entries that can be learned by an interface.

By default, the maximum of dynamic neighbor entries that an interface can learn is 1000 for the S2720-EI, S5720-LI, and S5720S-LI, 1024 for the S5735-L, S5735S-L, and S5735S-L-M, 2048 for the S5720I-SI, S5720-SI, and S5720S-SI, 3072 for the S5735-S, S5735-S-I, and S5735S-S, 8192 for the S5720-EI, S5731-S, S5731S-S, S6720-LI, and S6720S-LI, 64000 for the S5720-HI, 65536 for the S5731S-H, S5730-HI and S5731-H, 10240 for the S5730-SI, S5730S-EI, S6720-SI, and S6720S-SI, 49152 for the S6720-EI and S6720S-EI, and 32768 for the S5732-H, S6720-HI, S6730-S, S6730-H, S6730S-H, and S6730S-S.

Format

ipv6 nd neighbor-limit limit-number

undo ipv6 nd neighbor-limit

Parameters

Parameter	Description	Value
limit-number	Specifies the maximum number of dynamic neighbor entries that can be learned by a specified interface.	The value is an integer. The value ranges from 2 to 1000 for the S2720-EI, S5720-LI, and S5720S-LI. The value ranges from 2 to 1024 for the S5735-L, S5735S-L, and S5735S-L-M. The value ranges from 2 to 2048 for the S5720I-SI, S5720-SI, and S5720S-SI. The value ranges from 2 to 3072 for the S5735-S, S5735-S-I, and S5735S-S. The value ranges from 2 to 8192 for the S5720-EI, S5731-S, S5731S-S, S6720-LI, and S6720S-LI. The value ranges from 2 to 64000 for the S5720-HI. The value ranges from 2 to 65536 for the S5730-HI, S5731S-H, and S5731-H. The value ranges from 2 to 10240 for the S5730-SI, S5730S-EI, S6720-SI, and S6720S-SI. The value ranges from 2 to 49152 for the S6720-EI and S6720S-EI. The value ranges from 2 to 32768 for the S5732-H, S6730-S, S6730S-S, S6720-HI, S6730S-H, and S6730-H.

Views

VLANIF interface view, VBDIF interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

If an interface learns too many neighbor entries, the processing load for the device will be increased and the performance of the device will be degraded. You can run the ipv6 nd neighbor-limit command to configure the maximum number of dynamic neighbor entries that can be learned by a specified interface.

Prerequisites

The IPv6 function has been enabled on the interface using the ipv6 enable command.

Example

# Set the maximum number of dynamic neighbor entries that can be learned by the VLANIF100 interface to 10.

<HUAWEI> system-view
[HUAWEI] ipv6
[HUAWEI] interface vlanif 100
[HUAWEI-Vlanif100] ipv6 enable
[HUAWEI-Vlanif100] ipv6 nd neighbor-limit 10