Alcatel-Lucent 6850-48 参照ガイド
Ethernet Port Commands
page 19-14
OmniSwitch CLI Reference Guide
September 2009
interfaces pause
Configures whether or not the switch will transmit, honor, or transmit and honor flow control PAUSE
frames on the specified interface. PAUSE frames are used to temporarily pause the flow of traffic between
two connected devices to help prevent packet loss when traffic congestion occurs between switches.
frames on the specified interface. PAUSE frames are used to temporarily pause the flow of traffic between
two connected devices to help prevent packet loss when traffic congestion occurs between switches.
interfaces slot[/port[-port2]] pause {tx | rx | tx-and-rx | disable}
Syntax Definitions
slot
Slot number you want to configure.
port
Port number of the interface you want to configure.
port2
Last port number in a range of ports you want to configure.
tx
Transmits PAUSE frames to peer switches when traffic congestion
occurs on the local interface. Does not honor PAUSE frames from peer
switches.
occurs on the local interface. Does not honor PAUSE frames from peer
switches.
rx
Allows interface to honor PAUSE frames from peer switches and
temporarily stop sending traffic to the peer. Does not transmit PAUSE
frames to peer switches.
temporarily stop sending traffic to the peer. Does not transmit PAUSE
frames to peer switches.
tx-and-rx
Transmits and honors PAUSE frames when traffic congestion occurs
between peer switches.
between peer switches.
disable
Disables flow control on the interface.
Platforms Supported
OmniSwitch 6400, 6850, 6855, 9000, 9000E
Defaults
By default, flow control is disabled on all switch interfaces.
Usage Guidelines
• Note that if the standalone switch is a 24-port unit, then only the interfaces pause command is
required to enable end-to-end (E2E) flow control. However, if the switch is a 48-port unit, then a flow
control VLAN, which is configured using the
control VLAN, which is configured using the
command, is required in addi-
tion to enabling RX/TX pause flow control.
• A stack of switches or a chassis-based switch will honor receive pause frames.
• Flow control is only supported on interfaces configured to run in full-duplex mode; half-duplex mode
is not supported.
• If both autonegotiation and flow control are enabled on the same local interface, autonegotiation calcu-
lates operational flow control settings for that interface. Note that the operational settings, as shown in
the following table, override the configured settings as long as autonegotiation and flow control are
both enabled for the interface:
the following table, override the configured settings as long as autonegotiation and flow control are
both enabled for the interface: