Filter
Top Products
What’s New at Revision 8.2.0? 17
5 Enter full to set the port to full-duplex mode or half to set the port
to half-duplex mode.
Default The port’s current setting is indicated in brackets. To select this default,
press Return. This action leaves the port duplex mode unchanged.
6 Repeat steps 4 and 5 to configure all the selected ports in all the
selected slots.
Changing the mode to full-duplex disables collision detection on these ports.
Intelligent Flow Management (IFM).
Intelligent flow management
(IFM) is a congestion control mechanism that is built into the
CoreBuilder system. You should implement IFM on any Fast Ethernet
port that has a high volume of traffic. By default, IFM is enabled on
CoreBuilder module ports.
Congestion is caused when one or more devices send traffic to an already
congested port. If the port is connected to another CoreBuilder system or to
an end station, IFM minimizes packet loss and inhibits the sending device
from generating more packets until the congestion ends.
Intelligent flow management is supported only on half-duplex ports. It is
disabled on port that are configured for full-duplex mode. 3Com
recommends that you disable IFM on network segments that are connected
to repeaters.
To apply IFM to a half-duplex Fast Ethernet port:
1 From the top level of the Administration Console, enter:
ethernet fastEthernet ifm
A prompt similar to the following one appears:
Select slot(s) (10-12|all):
This prompt indicates that the CoreBuilder 6000 system contains
configurable Fast Ethernet ports in slots 10, 11, and 12.
2 Enter the number(s) of the slot(s) that contain ports that you want to
set to IFM mode:
10-12
Default To select the default all, press Return.
Top-Level Menu
system
➧ethernet
fddi
tokenring
bridge
ip
ipx
appletalk
snmp
analyzer
script
logout
summary
detail
➧fastEthernet
label
portState
s
duplexMode
➧ifm