Technical data

Using Technician Interface Software

8-62

303561-A Rev 00

Enabling Internal Clocking Mode

Within test environments and when using the HSSI crossover cable (Order No.

7832), you may need to configure Bay Networks routers from the Technician

Interface to enable internal clocking mode. Enter the following at the Technician

Interface prompt:

set wfHssiEntry.wfHssiInternalClkTestMode.4.1 1;commit

The default value, 2, enables external clocking. The new value, 1, enables internal

clocking.

Enter the following to display the new value:

get wfHssiEntry.wfHssiInternalClkTestMode.4.1

The Technician Interface displays:

wfHssiEntry.wfHssiInternalClkTestMode.4.1 = 1

Be sure to enter the following to set the variable back to external clocking to use

the external clock source:

set wfHssiEntry.wfHssiInternalClkTestMode.4.1 2;commit

Responding to QENET Underflow Errors

Transmit underflow errors can occur when a QENET link module is connected to

a FRE module and all four ports are transmitting. This often occurs when

non-SNAP encapsulated frames received from an FDDI ring are routed out the

interface of a QENET module. An example of such a frame is a Novell proprietary

encapsulated frame on FDDI.

The wfCSMACDUfloTx attribute in the wfCSMACDEntry MIB object shows the

number of transmit underflow errors. These errors result in other stations

detecting CRC errors.

Enter the following Technician Interface command for each of the four connectors

only if you are experiencing transmit underflow errors as described previously:

set wfCSMACDEntry.wfCSMACDAlignmentMode.

1;commit