Nortel Networks 10BASE-T Manual Do Utilizador

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Using the Console Interface
309985-C Rev 00
3-57
 
Choosing a High Speed Flow Control Mode
The High Speed Flow Control feature allows you to control traffic and avoid 
congestion on the gigabit full-duplex link. If the receive port buffer becomes full, 
the gigabit MDA issues a flow-control signal to the device at the other end of the 
link to suspend transmission. When the receive buffer is no longer full, the MDA 
issues a signal to resume the transmission.
You can choose Symmetric or Asymmetric flow-control mode.
Flow Control
Allows you to control traffic and avoid congestion on the gigabit MDA port. Two 
modes are available (see 
 on 
 for details about the two modes). Autonegotiation must be disabled 
for this port when using this feature.
Default
Disabled
Range
Disabled, Symmetric, Asymmetric
Note: 
The following two fields appear only when a (single MAC) MDA with a 
separate redundant Phy port is installed.
Preferred Phy
Allows you to choose the preferred Phy port; the other Phy port reverts to 
backup.
Default
Right
Range
Right, Left
Active Phy
Indicates the operational Phy port.
Default
None
Range
None, Right, Left
Table 3-20.
High Speed Flow Control Configuration Screen Fields
 (continued)
Field
Description