
Chapter 2 Using the console interface
115
System Configuration Guide
When a pause frame is received (by either the GBIC port or its link partner), the
port suspends transmission of frames for a number of slot times specified in the
control frame or until a pause-release control frame is received. Both devices on
the link must support this mode when it is selected.
Asymmetric mode
This mode allows the link partner to send flow control pause frames to the GBIC
port. When a pause frame is received, the receiving port suspends transmission of
frames for a number of slot times specified in the control frame or until a
pause-release control frame is received.
In this mode, the GBIC port is disabled from transmitting pause frames to its link
partner. Use this mode when the GBIC port is connected to a buffered repeater
device.
You can choose a high speed flow control mode using CLI commands. For more
information about the commands see
“Enabling flow control” on page 326
.
Rate Limiting Configuration screen
The Rate Limiting feature allows you to configure the threshold limits for
broadcast and multicast packets ingressing on a port for a given time interval. The
Ethernet Switch 325/425 drops any packets received above the threshold value if
the traffic ingressing on the port exceeds the threshold. The hardware restrictions
on this platform do not allow you to determine if the traffic from a port is the
cause of excess broadcast or multicast traffic. Consequently you cannot perform
port specific actions such as disabling a port. You can generate a trap to detect the
excess traffic or you can configure the switch to store a message in the system log
when the traffic on the port exceeds the threshold value. This message in the
system log conveys that some traffic to the switch will be dropped.
Summary of Contents for 425-24T
Page 20: ...20 Contents 320985 A Rev 01 ...
Page 38: ...38 Preface 320985 A Rev 01 ...
Page 198: ...198 Chapter 4 Getting Started with Device Manager 320985 A Rev 01 ...
Page 212: ...212 Chapter 5 Using the Web based management interface 320985 A Rev 01 ...
Page 318: ...318 Chapter 7 System configuration using the CLI 320985 A Rev 01 ...
Page 336: ...336 Chapter 8 Ethernet port management using the CLI 320985 A Rev 01 ...
Page 384: ...384 Chapter 11 Administering the switch using Web based management 320985 A Rev 01 ...
Page 404: ...404 Chapter 12 Configuring the switch using Web based management 320985 A Rev 01 ...
Page 424: ...424 Installing an SFP Transceiver 320985 A Rev 01 ...
Page 442: ...442 Default settings 320985 A Rev 01 ...
Page 468: ...468 Command List 320985 A Rev 01 ...
Page 474: ...474 Technical specifications 320985 A Rev 01 ...
Page 488: ...488 Index 320985 A Rev 01 ...