[Pkg-ofed-commits] r360 - /trunk/howto/infiniband-howto.sgml

[gmpc-guest at alioth.debian.org]

Author: gmpc-guest
Date: Thu Jul 23 14:28:00 2009
New Revision: 360

URL: http://svn.debian.org/wsvn/pkg-ofed/?sc=1&rev=360
Log:
Add section on ARP and dual ported IB cards

Modified:
    trunk/howto/infiniband-howto.sgml

Modified: trunk/howto/infiniband-howto.sgml
URL: http://svn.debian.org/wsvn/pkg-ofed/trunk/howto/infiniband-howto.sgml?rev=360&op=diff
==============================================================================
--- trunk/howto/infiniband-howto.sgml (original)
+++ trunk/howto/infiniband-howto.sgml Thu Jul 23 14:28:00 2009
@@ -519,6 +519,18 @@
 In order to obtain maximum IPoIB throughput you may need to tweak the MTU and various kernel TCP buffer and window settings. 
 See the details in the ipoib_release_notes.txt document in the ofed-docs package.
 
+<sect1>ARP and dual ported cards.
+<p>
+If you have dual ported card with both ports on the same IB subnet but you have configured a different IP subnet on each port, you
+will need to tweak the ARP settings for the IPoIB interfaces.  See the ipoib_release_notes.txt in the ofed-docs package for a full
+discussion of this issue.
+
+<tscreen>
+<verb>
+   sysctl -w net.ipv4.conf.ib0.arp_ignore=1
+   sysctl -w net.ipv4.conf.ib1.arp_ignore=1
+</verb>
+</tscreen>
 
 <sect>OpenMPI
 <p>