Transition Networks Section Vl: FBRM/BFFG Software Features
Software feature descriptions, continued
Table 3: Device Software Configurable Features (continued)
Feature Description
Auto-Negotiation This feature allows the two Devices to configure
themselves to achieve the best possible mode of
operation over a link, automatically. The Device
broadcasts its speed and duplex (full or half) capabilities
to the other Device and negotiates the best mode of
operation. Auto-Negotiation allows quick connections
because the optimal link between the Devices is
established automatically.
In a scenario where the Device links to a non-
negotiating Device, disable Auto-Negotiations. In this
instance, the mode of operation will drop to the lowest
common denominator between the two Devices; e.g., 10
Mb/s at half-duplex.
Disabling this feature allows forcing the connection to
the desired speed and duplex mode of operation.
Backup Configuration The firmware uses TFTP to upload its present
configuration onto a TFTP server, and can also
download the configuration from the TFTP server and
update its settings. This is useful when you want to
program more than one unit to the same configuration.
One unit can be programmed and that configuration can
be used to populate the other units. Care should be taken
on some settings such as IP address and VLAN settings.
This feature can be used with ‘ingress/egress’ frames. Bandwidth Allocation by
priority (ingress/egress) It allows setting the bandwidth in varied increments,
starting at 64kps to full bandwidth.
Rate Limiting based on frame priorities can also be
configured. Each higher priority frame can be
configured to get twice the bandwidth of lower priority
frames; e.g., priority “3” frame configurations can get
twice the bandwidth of priority “2” frames.
Egress bandwidth allocation in 64Kbits/sec increments:
• Rate limit all frames
Ingress bandwidth allocation in 64Kbits/sec increments
with four filter selections:
• Rate limit all frames
• Rate limit multicast, flooded unicast, and broadcast
• Rate limit multicast and broadcast
• Rate limit broadcast
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