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HP Netelligent 2008 User Manual: Runtime Features; Backup Port Usage

Hp netelligent 2008: user guide.
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Administration and Management

Runtime Features

The Runtime component of the repeater firmware v1.3 provides a backup port
feature, intrusion protection, and RJ-45 autopolarity reversal.

Backup Port Usage

You can designate a backup port that provides a redundant connection for a
primary port to protect mission-critical applications (e.g., order entry PCs
connected to a file server). The repeater activates the backup port when the
primary port loses link test or is autopartitioned by the hardware. Any port on
the repeater can back up any other port on the same repeater. However, a port
on the repeater cannot back up a port on another repeater.
During normal operation, the backup port is disabled. About every 5 seconds,
the repeater monitors the status of the primary port. If the primary port loses its
link test (e.g., the NIC loses power) or has been autopartitioned by the
hardware, the repeater disables the primary port, enables the backup port, and
sends an SNMP "health state trap" to each management station contained in its
IP and IPX trap tables. The primary port remains disabled to prevent it from
being incorrectly re-enabled. If the backup port fails, the repeater does not re-
enable the primary port.
To re-enable the primary port after a backup port has been activated, you must
use an SNMP network manager to change the backup port status.
The repeater does not monitor backup ports during BOOTP/RARP initialization
and downloading of new firmware.
VT100 Refresh rate
Modem Initialization string up to 40 characters in length
BOOTP/RARP timeout interval
Maximum retry count for BOOTP/RARP


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