Brocade Communications Systems Brocade Network OS 2.1 Manual de usuario descargar pdf (Pagina 23)

Network OS Documentation Update 13

53-1002606-06

qos flowcontrol

Activates and configures QoS flow control.

Synopsis qos flowcontrol tx [on | off] rx [on | off]

no qos flowcontrol

Operands tx [on | off] Activates or deactivates the transmission portion of flow control.

rx [on | off] Activates the receiving portion of flow control.

Defaults None

Command

Modes

Interface configuration mode

Description This command configures and activates QoS flow control.

When a 1Gbps local port is already online, and the qos flowcontrol command is issued, the pause

settings take effect immediately on that local port. However, when the link is toggled, pause is

re-negotiated. The local port will advertise the most recent qos flowcontrol settings. After auto

completes, the local port pause settings may change, depending on the outcome of the pause

negotiation, per 802.3 Clause 28B, as shown in Table 1.

Usage

Guidelines

None

Examples None

See Also None

TABLE 1 Pause negotiation results

Advertised LOCAL cfg Advertised REMOTE cfg Negotiated result

Rx=off Tx=on Rx=on Tx=on asymmetrical: LOCAL Tx=on --> pause --> REMOTE Rx=on

Rx=on Tx=on Rx=off Tx=on asymmetrical: LOCAL Rx=on <-- pause <-- REMOTE Tx=on

Rx=on Tx=n/a Rx=on Tx=n/a symmetrical : LOCAL Tx/Rx=on <-- pause --> REMOTE Tx/Rx=on

Rx=n/a Tx=n/a Rx=off Tx=off disable pause both sides

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Brocade Communications Systems Brocade Network OS 2.1 Manual de usuario Pagina 23