Filter
Top Products
Configuring Duplex Modes 5-25
Bridging
To delete an address:
1. Click to highlight the address entry in the Address Entry panel that you wish to
delete from the filtering database.
2. Click on .
Clearing All Permanent, Static, or Dynamic Entries
To erase all Permanent, Static, or Dynamic entries from the Filtering Database,
click on the associated button in the upper portion of the window.
Configuring Duplex Modes
Any standard Ethernet interface on a 9H42x-xx module which is connected to
another end station — i.e., another bridge interface — will support Duplex Mode
operation. (Ethernet interfaces connected to repeaters will not support this mode.)
Enabling Full Duplex mode on an interface allows the interface to receive and
transmit packets at the same time, effectively doubling the available bandwidth
(and, therefore, the wire speed) on the selected interface. Interfaces which are not
set to Full Duplex mode must receive and transmit separately, waiting for one
activity to be completed before the other is begun.
You can configure the duplex mode for each appropriate interface via the Duplex
Modes window accessible from both the Module View and Bridge Status window
Bridge menus, and via the Port Configuration window accessible from both the
Module View and Bridge Status window Port menus. From the Bridge menus, a
single window allows you to both display and set the configuration of each
WARNING
For standard Ethernet interfaces, Full Duplex should only be enabled on an interface that
has a connection to a single destination address at the other end of the connection (i.e., it is
not a segment with an attached repeater cascading the connection to multiple destination
addresses).
Full Duplex mode disables the collision detection circuitry at the interface, so that both
Transmit and Receive wires can be used simultaneously. With a single destination address
at the other end of the connection (for example, if the connection was to a full duplex
interface on another switching module, or if a single file server was connected to the full
duplex switch port), this essentially doubles the available bandwidth from 10 Mbit/sec to
20 Mbit/sec. Note that the interface at the other end of the connection must also have Full
Duplex enabled at the attached interface.
Full Duplex mode must be disabled if the interface is communicating with multiple
destinations simultaneously (i.e., if a repeater is cascaded from the interface), since
Ethernet relies on Collision Sense for proper operation.