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Message-Id: <20070710091941.23907.45658.sendpatchset@cselinux1.cse.iitk.ac.in> Date: Tue, 10 Jul 2007 14:49:41 +0530 From: Satyam Sharma <ssatyam@....iitk.ac.in> To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Cc: Matt Mackall <mpm@...enic.com>, Keiichi Kii <k-keiichi@...jp.nec.com>, Satyam Sharma <ssatyam@....iitk.ac.in>, Netdev <netdev@...r.kernel.org>, Joel Becker <joel.becker@...cle.com>, Stephen Hemminger <shemminger@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, David Miller <davem@...emloft.net> Subject: [PATCH v2 -mm 4/9] netconsole: Add some useful tips to documentation From: Satyam Sharma <ssatyam@....iitk.ac.in> [4/9] netconsole: Add some useful tips to documentation Add some useful general-purpose tips. Signed-off-by: Satyam Sharma <ssatyam@....iitk.ac.in> Cc: Keiichi Kii <k-keiichi@...jp.nec.com> --- Documentation/networking/netconsole.txt | 13 +++++++++++++ 1 file changed, 13 insertions(+) --- diff -ruNp a/Documentation/networking/netconsole.txt b/Documentation/networking/netconsole.txt --- a/Documentation/networking/netconsole.txt 2007-04-26 08:38:32.000000000 +0530 +++ b/Documentation/networking/netconsole.txt 2007-07-10 07:31:12.000000000 +0530 @@ -44,6 +44,19 @@ WARNING: the default target ethernet set ethernet address to send packets, which can cause increased load on other systems on the same ethernet segment. +TIP: some LAN switches may be configured to suppress ethernet broadcasts +so it is advised to explicitly specify the remote agents' MAC addresses +from the config parameters passed to netconsole. + +TIP: to find out the MAC address of, say, 10.0.0.2, you may try using: + + ping -c 1 10.0.0.2 ; /sbin/arp -n | grep 10.0.0.2 + +TIP: in case the remote logging agent is on a separate LAN subnet than +the sender, it is suggested to try specifying the MAC address of the +default gateway (you may use /sbin/route -n to find it out) as the +remote MAC address instead. + NOTE: the network device (eth1 in the above case) can run any kind of other network traffic, netconsole is not intrusive. Netconsole might cause slight delays in other traffic if the volume of kernel - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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