Gigabitethernet ports, Mini-gbic fiber, copper port – Enterasys Networks XSR-3020 User Manual
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Cable, CompactFlash and Accessory Specifications
XSR Getting Started Guide A-5
GigabitEthernet Ports
The XSR comes equipped with three GigabitEthernet (LAN) ports that support full-duplex 10, 100,
or 1000 Mbps transmission. The ports conform to IEEE 802.3 standards with 8-pin modular RJ-45
connectors. Because these ports have internal MDI crossover capabilities which allow them to
detect which mode (DTE or DCE) the link partner is operating at, you can use any cable to attach
the XSR with a PC or uplink port as long as a fully populated cable (all four pairs) is connected to
take advantage of full gigabit bandwidth.
When GigabitEthernet interface 1 is used, the Mini-GBIC port is unavailable, and vice versa.
Refer to
Figure A-2 GigaBitEthernet Port Pinouts
Mini-GBIC Fiber, Copper Port
The XSR offers a 1000Base-T GigabitEthernet port that supports full or half-duplex 1000 Mbps
transmission. The 20-pin, Mini-GBIC socket accepts all SFP MSA compliant Mini-GBIC modules.
Be aware of the following conditions when using Fiber or Copper ports:
•
When the Mini-GBIC port is used, GigabitEthernet port 1 is disabled.
•
When GigabitEthernet port 1 is used, the Mini-GBIC port is disabled.
•
If both Fiber and Copper ports are plugged in, only Fiber is enabled.
•
On GigabitEthernet port 1, when the far end of the line is active, the Fiber port takes
precedence.
•
If the Fiber port is connected, speed must be set to auto to achieve 1000 Mbits.
•
If the fiber port is connected, speed and duplex must be set to auto on both ends of the line
otherwise the connection will be unpredictable.
Refer to the XSR CLI Reference Guide for more command details.
Cabling for the Mini- GBIC is supported using an MT-RJ connector with a fiber link or the
appropriate connector with a copper link.
Pin Signal
1
TRDO+
2
TRDO-
3
TRD1+
4
TRD2+
5
TRD2-
6
TRD1-
7
TRD3+
8
TRD3-
Eth 2 & 3
Pin 1
Pin 8
Pin 8
Pin 1
Eth 1