|author||hpa <hpa>||2001-03-28 19:15:10 +0000|
|committer||hpa <hpa>||2001-03-28 19:15:10 +0000|
Explain that old Intel PXE stacks have allergy to PMTU discovery.
1 files changed, 12 insertions, 4 deletions
diff --git a/pxelinux.doc b/pxelinux.doc
index ba4b0084..539ea4ee 100644
@@ -80,10 +80,10 @@ Lefebvre:
Unfortunately, the Intel LANDesk Service Agent II prior to version
-0.99h (PXE PDK V2.4) seems to have a rather serious bug: it requests
-the TFTP "blksize" option, but will be mortally confused if this
-option is actually accepted by the server! There are three possible
-workarounds for this bug:
+0.99h (PXE PDK V2.4) seems to have a host of serious bugs. Among
+other things, it requests the TFTP "blksize" option, but will be
+mortally confused if this option is actually accepted by the server!
+There are three possible workarounds for this bug:
1. Use a TFTP server with doesn't support "blksize".
@@ -101,6 +101,14 @@ workarounds for this bug:
request the "blksize" option if it has tried MTFTP and failed.
These DHCP options are beyond the scope of this document.
+These systems also break if PMTU discovery is enabled on the TFTP
+server. This has to be disabled in the kernel on the TFTP server. On
+Linux, you can disable PMTU discovery by setting:
+ echo 1 > /proc/sys/net/ipv4/ip_no_pmtu_disc
+Note that this may cause bad performance for other services on the machine.
++++ SETTING UP THE DHCP SERVER ++++