Enterasys Networks Enterasys Platinum Distributed Forwarding Engine 7G4285-49 - Manual (Page 22)

DFE Module and Interface Options
1-2 Introduction
• High‐availability services with stateful failover for services and management
• Self‐learning configuration modules with increased reliability and fault tolerance that
reduces configuration time and maximizes uptime
• Network‐wide configuration, change, and inventory management that is easier to
install, troubleshoot, and maintain
• Reduced support and maintenance costs, and decreased configuration time
• Support for a variety of converged applications including VoIP with Power‐over‐
Ethernet
DFE Module and Interface Options
This section provides an overview of the 7G4285‐49 ( Figure 1‐1 ) and 7G4205‐72
( Figure 1‐2 ). For information about the DFE module features and how to configure them,
refer to the Enterasys Matrix DFE‐Platinum Series Configuration Guide.
7G4285-49
The 7G4285‐49 has 48, 10BASE‐T/100BASE‐TX/1000BASE‐T, PoE‐compliant ports that are
accessed through the fixed front panel RJ45 connectors. There is also an option slot for an
network expansion module (NEM). The DFE module can be installed in a Matrix E7,
Matrix N3, Matrix N5, or Matrix N7 chassis. (See
Figure 1‐1 on page 1‐3.)
Each of the fixed front panel ports can operate in either half‐duplex or full‐duplex mode
of operation. The duplex mode can be determined by either auto‐negotiation or manual
configuration.
The DFE module ports can be configured to provide a high level of security, control traffic
by limiting the rate of traffic accepted into the module and prioritizing traffic to expedite
the flow of higher priority traffic through the module. For a complete list of capabilities,
refer to the Enterasys Matrix DFE‐Platinum Series Configuration Guide.
The DFE module receives power and backplane connectivity when it is inserted into the
Matrix E7, Matrix N7, Matrix N5, or Matrix N3 chassis. The power to support the DFE
module connections to 802.3af PoE‐compliant 48 Vdc PDs (powered devices) can be from
the backplane of a Matrix N5 chassis or from an optional external Matrix N‐POE Power
System.
The Matrix N‐POE Power System can provide 48 Vdc to support up to seven
PoE‐compliant DFE modules. The connection from the N‐POE Power System is by way of
the 48 Vdc ~ 20 A Maximum, optional Power Input connector on the front panel of the
DFE module.
Note: Only an N-POE Power System can be connected to the 48 Vdc ~ 20 A Maximum
Optional Power Input connector of a series PoE-compliant DFE module such as the
7G4285-49.