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Once the ring speed for the network is set, each port, trunk or module
assigned to that network will assume the speed of the network.
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Enable support for splitters and fan-out devices
If you are planning to attach passive modules to a segment and there are
splitters and fan-out devices attached to the ports of the passive module, you
must issue the following command to ensure that an accurate
port-to-address mapping is performed on the network:
SET NETWORK {network} MISMATCH_RESOLUTION {enable}
Note: This command is not required if the network consists of active
modules only.
9.3 8260 18-Port Active Per-Port Switching Module
This module is a single-slot module that supports 18 active ports. The main
features of this module are:
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18 ports with shielded RJ-45 connectors.
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Each port has its own DPLL, which actively re-times and re-generates the
signal on that port. This provides longer lobe distances on both UTP and
STP. For the lobe distances supported on the active ports, please refer to
Table 26 on page 143.
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Each port can be connected to one of the 10 token-ring segments on the
ShuntBus or one of the 11 isolated segments on the module. All the ports
can be connected to a maximum of 11 segments consisting of backplane and
isolated segments.
Note: When you use a backplane (or isolated) segment the equivalent
isolated (or backplane) segment is not available. For example if one or more
ports are assigned to token_ring_1 segment, no port can be assigned to
isolated_1 segment.
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Simultaneous UTP and STP cabling is supported on the module. Also, UTP
and STP attached stations can be connected to the same segment.
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Ports 17 and 18 can optionally be configured to be used as RI/RO ports for
connection to another hub. This module supports RI/RO connections to an
8228, 8230, 8250 and 8260.
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Support for beacon recovery using the Recovery ASIC which is implemented
on the module. Unlike 8250, there is no need for a management module to
resolve beacon conditions.
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Support for address-to-port mapping using the recovery ASIC.
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Support for fan-out devices and splitters for attaching up to 8 stations to each
port. Note that the fan-out device or the splitter is required to provide a
phantom signal; therefore, 8228 cannot be used as the fan-out device with
this module.
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Support for connection of MAC-less stations (such as token-ring tracing
tools) to all ports except port 18.
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Automatic speed detection of the attached stations so that only the stations
with the correct ring speed settings can attach to the network.
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Support for simultaneous 4 and 16 Mbps token-ring networks on the module.
174 8260 Multiprotocol Intelligent Switching Hub