[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: [K12OSN] XDM too many retransmissions

Update on XDM, it was the switch! Thanks all and esp. Lewis for the help!


Les Mikesell wrote:
On Wed, 2004-06-23 at 13:47, Jeff Kinz wrote:

Its always good to have multiple options for network equipment
especially low end switches when doing an LTSP install.

Thank you for sharing this info. It is definitely useful.

A couple of things you may run into with switches:

If one end has been locked to a specific duplex setting, at
least with Cisco equipment that will disable negotiation and the
other end is forced to assume half-duplex if it isn't also locked,
which is almost always wrong.  The mismatch causes dropped packets
and a drastic reduction in throughput although tcp retries will
tend to hide the problem.

If the switch port does not pass data while doing spanning-tree
it may take an extra 20 to 30 seconds to connect whenever
the port has dropped.  For clients you'll see this before a PXE boot
and again after the kernel is loaded and tries to get it's DHCP

   Les Mikesell
    les futuresource com

_______________________________________________ K12OSN mailing list K12OSN redhat com https://www.redhat.com/mailman/listinfo/k12osn For more info see <http://www.k12os.org>

[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]