Release M.10.07 Enhancements; Release M.10.08 Enhancements; Release M.10.09 Enhancements; Uni-Directional Link Detection (Udld) - HP ProCurve Series 3400cl Release Notes

Enhancements

Release M.10.07 Enhancements

Release M.10.07 Enhancements
Release M.10.07 includes the following enhancement:
■ Added support for PIM Dense Mode. For details, refer to Chapter 5, "PIM-DM (Dense Mode)
on the 5300xl Switches" in the Advanced Traffic Management Guide for the ProCurve Series
6400cl/5300xl/4200vl/3400cl Switches.

Release M.10.08 Enhancements

Software fixes only, no new enhancements.

Release M.10.09 Enhancements

Release M.10.09 includes the following enhancement:
Added support for Unidirectional Link Detection (UDLD). See
■
tion (UDLD)" on page 80

Uni-Directional Link Detection (UDLD)

Uni-directional Link Detection (UDLD) monitors a link between two ProCurve switches and blocks
the ports on both ends of the link if the link fails at any point between the two devices. This feature
is particularly useful for detecting failures in fiber links and trunks.
In the example shown in
a trunk group. Without the UDLD feature, a link failure on a link that is not directly attached to one
of the ProCurve switches remains undetected. As a result, each switch continues to send traffic on
the ports connected to the failed link. When UDLD is enabled on the trunk ports on each ProCurve
switch, the switches detect the failed link, block the ports connected to the failed link, and use the
remaining ports in the trunk group to forward the traffic.
80
for details.
Figure 20, each ProCurve switch load balances traffic across two ports in
"Uni-Directional Link Detec-