Enabling Arp Suppression Function; Enabling Layer 2 Topology Detection Function; Checking The Configuration - Huawei S9300 Configuration Manual

S9300&S9300E Terabit Routing Switch
Configuration Guide - IP Service
By default, the aging detection times of the dynamic ARP entries is three, and the aging timeout
period is 1200 seconds.
Step 5 Run:
arp detect-mode unicast
The interface is configured to send ARP Aging Detection packets in unicast mode.
By default, an interface sends ARP Aging Detection packets in broadcast mode.
----End

2.4.3 Enabling ARP Suppression Function

If the system receives a great number of ARP packets from the same source at a time, the system
needs to update ARP entries repeatedly. To ensure the performance of the system, you can enable
ARP suppression. In this manner, the system only responds to the ARP packets but does not
update ARP entries.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
arp-suppress enable
ARP suppression is enabled on the current device.
----End

2.4.4 Enabling Layer 2 Topology Detection Function

After Layer 2 topology detection is enabled, the system updates all the ARP entries
corresponding to the VLANs to which a Layer 2 interface belongs, if this Layer 2 interface goes
Up.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
l2-topology detect enable
The Layer 2 topology detection function is enabled.
By default, this function is not enabled.
----End

2.4.5 Checking the Configuration

You can view the configuration of dynamic ARP.
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2 ARP Configuration
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