In this section:
The SBC sends Gratuitous ARP with the 'opcode' reply to advertise the IP/MAC binding. Some routers support Gratuitous ARPs (GARPs) with the opcode 'request' by default. It is the recommended option for routers to send GARPs in response to ARP requests sent by any node in the same broadcast domain for address conflict detection, as mentioned in RFC 5227. In order to support the 'request' opcode and maintain backward compatibility, a configurable option to set the opcode for GARP based on the opcode supported by the router is available.
Configure GARP Opcode
Use the following procedure to configure the GARP Opcode.
On the SBC mainscreen, go to All > System > Admin > Gratuitous ARP.
Edit Gratuitous ARP
The default value for opcode is set to Reply (2). Set the Opcode as required.
GARP Parameters
Use the following table to edit the settings as needed, then click Save.
GARP Parameters
| Parameter | Length/Range | Default | Description | M/O |
|---|---|---|---|---|
| Op Code | 1- Arp Request 2- Arp Reply | Reply (2) | GARP opcode for request and reply | Optional |
Overview
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