How to disable gratuitous ARP on Sun[TM] Fire V60x & V65x

Asset ID:	1-71-1006100.1
Update Date:	2016-11-04
Keywords:

Solution Type Technical Instruction Sure

Solution 1006100.1 : How to disable gratuitous ARP on Sun[TM] Fire V60x & V65x

Applies to:

Sun Fire V60x Server - Version Not Applicable and later
Sun Fire V65x Server - Version Not Applicable and later
All Platforms

Goal

Gratuitous ARP on Sun[TM] Fire V60x & V65x can impact on network performance

Solution

Sun Fire V60x and V65x send gratuitous ARP over the network when Serial Over LAN is enabled. BMC send these gratuitously to allow the console server to make the Sun Fire V60x or V65X serial over lan console update the ARP table on that server.

If you are not going to use Serial Over Lan, disable it via BMC setup.
- Boot though Diagnostics CD
- select System Utilities --> Run System Setup Utility
(this will create a RAM disk, so you need to wait)
- On the Task Window select Platform Event Manager --> Configure LAN
- Select the LAN Access mode option to disable
After that save and leave.
If you need to use serial over LAN and want to disable gratuitous ARP you
will need the ipmitool package.
After installing ipmitool run the ipmitool lan set command to disable
gratuitous APR.  For example:
ipmitool -I... lan set <channel> arp <generate|respond> <on|off>
ipmitool -I... lan print 6 | grep "ARP Control"
BMC ARP Control         : 0x01
ipmitool -I... lan set 6 arp generate off
ipmitool -I... lan print 6 | grep "ARP Control"
BMC ARP Control         : 0x00
At this point BMC stops sending ARP packages over the network and you will
no longer be able to reach the server console.
You need to fix on the Console server the V60/5x MAC address of all
disabled gratuitous ARP machines.

The following is strictly for the use of Oracle employees:

You can get the ipmitool from MOS Patches & Updates

Previously Published As 73965

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