Specifications

Clarifications and Known Behaviors
ExtremeWare 7.0 Release Notes 39
BlackDiamond 6816 MIB Value for Input Power Voltage
On the BlackDiamond 6816, the extremeInputPowerVoltage attribute in extremeSytemCommonInfo is
shown as “0” and the extremePowerSupplyInputVoltage in the extremePowerSupplyTable is shown as
“unknown.” These values cannot be obtained from the switch (1-841J1).
Backplane Traffic
On the BlackDiamond switch, all backplane traffic is tagged. As a result, for cross-module traffic
traversing the switch, dot1P QoS has the highest priority on egress (1-CPL8B).
QoS
If you configure QoS on an untagged ingress port, the dot1p bit of a packet leaving a tagged port on a
different module is always replaced, even though dot1p replacement is disabled (1-E2UX2, 1-5I3VA).
Alpine
Alpine 3802 show switch Output Shows Incorrect PSU Placement
The output of the show switch command shows PSU A on top and PSU B on the bottom in an Alpine
3802 chassis (PD2-129291301).
System Health Check Events Might Not Be Logged
Messages for system health check events might not be logged due to the software not being intialized
(PD2-129795601).
Configuring Two Multilink groups on One T1 or E1 Module
If you configure two multilink groups to use the same T1 or E1 module, multilink throughput is
degraded slightly. A workaround is to disable WAN QoS (PD2-117966118).
Limited Commands Mode
When in limited commands mode, the slot status LED remains orange, though the link is taken down
(PD2-99107226).
T1 and E1 Error Message
A message similar to the following:
12/06/2002 11:58.28 <CRIT:KERN> Restarted fifo on slot 2
might appear in the log for T1 and E1 slots during the initialization of the T1 or E1 modules. These
messages are not critical and do not affect the operation of the modules (PD2-110059501).
VDSL Modules in a Half-Duplex Link
A VDSL CPE operating in a half-duplex link can lock up when used with a hub and running wire-rate
randomized traffic. This is a hardware limitation. A restart of the VDSL port will recover, but if the
traffic continues at wire-rate and is randomized, then the problem will reoccur (PD2-71538118).