Messages in this thread | | | Date | Mon, 13 Sep 1999 01:19:00 +0000 | From | "Stephen D. WIlliams" <> | Subject | Urgent Need: Ensure certain interfaces don't ARP reply, esp. lo:0 |
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For certain high transaction rate clustering situations (specifically LinuxDirector with Direct Routing), it is required that certain interfaces (normally a loopback alias) do not generate ARP replies. The reason for this is that there is a router device (the LinuxDirector director) that is acting as the incoming router for load distribution (a type of reverse NAT). This is state of the art, although layer three analysis and routing is the next step.
The notes for LinuxDirector mention that Solaris, Linux 2.0.36, and 2.2.10 with the LinuxDirector patch will not ARP reply for the IP address attached to lo:0. Unfortunately I have currently settled on 2.2.13Pre6 as a stable kernel and this is a problem for me.
Using arpwatch I can see ARP replies from both the director and servers.
It would be nice if there were a way to configure an interface to explicitly disable ARP replies. Is this possible now?
If I were to add it, what method would be most desirable? /proc/net/*, fattening the ifconfig interfaces a little?
Thanks! sdw
-- OptimaLogic - Finding Optimal Solutions Web/Crypto/OO/Unix/Comm/Video/DBMS sdw@lig.net Stephen D. Williams Senior Consultant/Architect http://sdw.st 43392 Wayside Cir,Ashburn,VA 20147-4622 703-724-0118W 703-995-0407Fax 5Jan1999
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