Nortel Networks 10BASE-T Manuel d'utilisateur télécharger pdf (Page 199)

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 “

Choosing a High Speed Flow Control Mode” on

page 3-57

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

1 2 ... 194 195 196 197 198 199 200 201 202 203 204 ... 329 330

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Nortel Networks 10BASE-T Manuel d'utilisateur Page 199