Gentoo Archives: gentoo-server

From: Ramon van Alteren <ramon@××××××××××.nl>
To: gentoo-server@l.g.o
Subject: Re: [gentoo-server] Disable ARP
Date: Tue, 16 Oct 2007 08:44:51
Message-Id: 471476EC.2030206@vanalteren.nl
In Reply to: Re: [gentoo-server] Disable ARP by Jeff Rooney
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4 Jeff Rooney wrote:
5 > Both methods appear to work as I hoped.
6
7 Good.
8
9 > Ramon: you where exactly right, I was following some documentation sent
10 > over with some load balancers that I am experimenting with. Unfortunatly
11 > their tech staff didn't have any real options for us other than blocking
12 > the arp responses via ebtables.
13
14 Mmmm interesting tech support, out of curiosity what loadbalancers are
15 you using ?
16
17 > Not sure why I didn't think about using
18 > the dummy interface instead of the loopback...guess its just been that
19 > sort of day for me =)
20
21 I have them too (those days), trying to ram the square block through the
22 round hole.... In some cases it even works :-)
23
24 > Thanks again for your help Ramon and RijilV.
25
26 You're welcome.
27 Word of warning: If you lose the noarp option on one of the real-servers
28 you will see very weird erratic behaviour which can be hard to debug.
29 Depending on the load you push through the loadbalancer the realserver
30 which sends an arp will die immediately or slowly whilst generating
31 weird bugs in your app.
32
33 Best way to check: login with ssh on the vip
34
35 Ramon
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43 --
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Replies

Subject Author
Re: [gentoo-server] Disable ARP Jeff Rooney <jtrooney@×××.com>