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1.4
PORT/VLAN REDIRECT FUNCTIONS
The port redirect function, also referred to as "Port Mirroring," is a troubleshooting tool used to
map traffic from a single source port to a single destination port within the module. This feature
allows frames, including those with errors, to be copied and sent to an analyzer or RMON probe.
The analyzer or RMON probe will see the data as if it were directly connected to the LAN segment
of the source port.
The VLAN redirect function is similar to the port redirect function except that the frames received
by the module are redirected to a designated destination port according to the VLAN classification
of the frames received. Multiple VLANs can be directed to the same destination port. The VLAN
redirect function is only supported when the module is operating as an 802.1Q switch.
1.5
FLOW CONTROL
Flow control is a method of managing the flow of frames between two devices. It ensures that a
transmitting device does not overwhelm a receiving device with data. This is accomplished by the
transmitting device pausing its transmission while the receiving device processes the frames
already received.
The module supports Frame based 802.3x flow control. Frame based 802.3x flow control is
supported on all Ethernet ports operating in the full-duplex mode. The Gigabit Ethernet standard
requires all ports to utilize the full duplex mode of operation. Flow control can be enabled or
disabled on a port-by-port basis.
1.6
802.1 PORT PRIORITY
The 802.1 port priority is used to assign a default priority to the frames received without priority
information in their tag header, map prioritized frames to the appropriate transmit queues, and
prioritize frames according to protocol type. The 802.1 port priority is part of the IEEE 802.1D
standard.
1.7
MANAGEMENT
Management of the module can be either in-band or out-of-band. In-band remote management is
possible through any SNMP-compliant Network Management Software, such as Enterasys
Networks' NetSight. In-band management using Telnet and Enterasys Networks' WebView is also
provided. Out-of-band Local Management is provided through the RJ45 COM port on the front
panel using a VT100 terminal or a VT100 terminal emulator.
Local Management provides the ability to manage the module. Refer to the MATRIX E5 Series
Modules Local Management User's Guide for more information.
Port/VLAN Redirect Functions
Introduction
1-5
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Table of Contents
Troubleshooting
