PowerConnect 5500 Series Release Notes
System Firmware Version 4.1.0.16 Subject to Change Without Notice Page 4
Known Restrictions and Limitations
When 2 PoE capable
switches are connected to
each other, one of the 2
switches may consume
power form the neighboring
switch and not from its
internal power supply.
“Receiving” switch is not able to provide
PoE power to PD devices attached to it.
Disable PoE on the ports which connect
2 PoE enabled devices.
WEB GUI Page “Utilization
Summary”, "Interface
Utilization field" sometimes
displays “-“
When sending wire-speed traffic and the
refresh rate is longer than 15 seconds,
the WEB GUI displays “-“ instead of a
real value.
When sending wire-speed traffic, use
refresh rate of 15 seconds.
USB key might hang after
several quick inserts and
removals requiring a reboot.
After the USB key is inserted and
removed several times very quickly
(within a second) along with the "dir usb:"
command, the key stops responding.
The USB key becomes operational after
reboot.
Wait a few seconds between insertion
and removal of the USB key.
interoperability problem with
Cisco Phones 7960/ Inter-Tel
8560 IP Phones, Ruckus
7372 AP
Some of IP Phones create a short on
Ethernet wires when connected to
PC55xx POE ports. Connecting such
phone to PC55xxP might cause a
leakage of power to other POE devices
connected on the same switch. This may
cause POE issues on neighboring ports.
Two options are available to work
around this issue:
• Use a RJ45-Cat5 splitter cable
(2-to-1 RJ45 Splitter Cable
Adapter-F/M)
• Use a two pair Ethernet cable
Portfast shows status "No"
when interface is down
When port is in portfast status and in
down state, after reboot the port is
presented in show spanning-tree as not
supporting the portfast.
Once the interface moves to up state,
portfast functions as expected
When the interface is down, refer to
the running-configuration output
instead the show spanning –tree.
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