From: Satyam Sharma <[email protected]>
[4/9] netconsole: Add some useful tips to documentation
Add some useful general-purpose tips.
Signed-off-by: Satyam Sharma <[email protected]>
Cc: Keiichi Kii <[email protected]>
---
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
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