Configuring Arp Suppression; Overview; Configuration Procedure - HPE FlexNetwork MSR Series Comware 7 Layer 3 - Ip Services Configuration Manuals

Configuring ARP suppression

Overview

The ARP suppression feature enables a device to directly answer ARP requests by using ARP
suppression entries. The device generates ARP suppression entries based on dynamic ARP entries
that it learns. This feature is typically configured on the PEs connected to base stations in an MPLS
L2VPN that provides access to an L3VPN network.
You can also configure the ARP suppression push feature to push ARP suppression entries by
broadcasting gratuitous ARP packets.
Figure 8 shows a typical application scenario. ARP suppression is enabled on the PE that connects
to the base station. The PE generates ARP suppression entries for the base station, PE-agg 1, and
PE-agg 2, and it directly replies subsequent ARP requests for these devices.
Figure 8 Typical application

Configuration procedure

Step
1. Enter system view.
2. Create a cross-connect
group and enter its view.
3. Create a cross-connect
and enter its view.
4. Enable ARP
suppression.
5. Return to cross-connect
Command
system-view
xconnect-group group-name
connection connection-name
arp suppression enable
quit
23
Remarks
N/A
By default, no cross-connect groups
exist.
For more information about this
command, see MPLS Command
Reference.
By default, no cross-connects exist.
For more information about this
command, see MPLS Command
Reference.
By default, ARP suppression is
disabled.
N/A