Extreme Networks E4G Series User manual

Extreme Networks, Inc.
3585 Monroe Street
Santa Clara, California 95051
[phone]
[phone]
http://www.extremenetworks.com
Extreme Networks E4G Series Routers
Hardware Installation Guide
Published: February 2012
Part number: 120728-00 Rev. 01

E4G Series Routers Hardware Installation Guide
2
AccessAdapt, Alpine, Altitude, BlackDiamond, Direct Attach, EPICenter, ExtremeWorks Essentials, Ethernet
Everywhere, Extreme Enabled, Extreme Ethernet Everywhere, Extreme Networks, Extreme Standby Router
Protocol, Extreme Turbodrive, Extreme Velocity, ExtremeWare, ExtremeWorks, ExtremeXOS, Go Purple Extreme
Solution, ExtremeXOS ScreenPlay, ReachNXT, Ridgeline, Sentriant, ServiceWatch, Summit, SummitStack, Triumph,
Unified Access Architecture, Unified Access RF Manager, UniStack, XNV, the Extreme Networks logo, the Alpine
logo, the BlackDiamond logo, the Extreme Turbodrive logo, the Summit logos, and the Powered by ExtremeXOS
logo are trademarks or registered trademarks of Extreme Networks, Inc. or its subsidiaries in the United States
and/or other countries.
sFlow is the property of InMon Corporation.
Specifications are subject to change without notice.
All other registered trademarks, trademarks, and service marks are property of their respective owners.
© 2012 Extreme Networks, Inc. All Rights Reserved.

E4G Series Routers Hardware Installation Guide
3
Contents
Preface.........................................................................................................................................................7
Audience ..................................................................................................................................................................7
Conventions .............................................................................................................................................................8
Related Publications.................................................................................................................................................8
PART 1: ABOUT THE E4G SERIES ROUTERS
Chapter 1: About the E4G Series Routers .............................................................................................13
Overview ................................................................................................................................................................13
E4G-200 Cell Site Router.......................................................................................................................................14
E4G-200 CLK Module .....................................................................................................................................16
E4G-200 F16T1E1 Module .............................................................................................................................16
E4G-200 LEDs ................................................................................................................................................17
E4G-400 Cell Site Aggregation Router...................................................................................................................18
Combination Ports on the E4G-400 Router ....................................................................................................20
LEDs ...............................................................................................................................................................20
Power Supplies for the E4G-400.....................................................................................................................22
Optional Ports for the E4G-400 Router ...........................................................................................................23
XGM3S-2sf Option Card ..........................................................................................................................23
XGM3S-2xf Option Card ..........................................................................................................................23
XGM3SB-4sf Option Card........................................................................................................................24
E4G-B16T1E1 Option Card .....................................................................................................................24
Pluggable Interfaces for E4G Series Routers.........................................................................................................25
PART 2: INSTALLING HARDWARE
Chapter 2: Site Preparation .....................................................................................................................29
Planning Your Site..................................................................................................................................................30
Meeting Site Requirements ....................................................................................................................................30
Operating Environment Requirements............................................................................................................30
Building and Electrical Codes ..................................................................................................................30
Equipment Location Considerations ........................................................................................................31
Temperature ............................................................................................................................................32
Humidity ...................................................................................................................................................32
Spacing Requirements and Airflow..........................................................................................................32
Electrostatic Discharge ............................................................................................................................33
Rack and Cabinet Specifications and Recommendations...............................................................................33
Mechanical Recommendations for the Rack............................................................................................33
Protective Grounding for the Rack...........................................................................................................34
Space Requirements for an E4G-400 Router ..........................................................................................34
Securing the Rack....................................................................................................................................34
Outdoor Installation Sites ................................................................................................................................35
Evaluating and Meeting Cable Requirements ........................................................................................................35
Cabling Standards...........................................................................................................................................36
Cable Labeling and Record Keeping ..............................................................................................................36
Installing Cable................................................................................................................................................36
Fiber Optic Cable .....................................................................................................................................38
Cable Distances.......................................................................................................................................39

Contents
E4G Series Routers Hardware Installation Guide
4
RJ-45 Connector Jackets................................................................................................................................40
Radio Frequency Interference.........................................................................................................................40
Meeting Power Requirements ................................................................................................................................41
Power Supply Requirements...........................................................................................................................41
AC Power Cables............................................................................................................................................41
Uninterruptible Power Supply Requirements ..................................................................................................42
Selecting a UPS.......................................................................................................................................42
Calculating Volt-Amperage Requirements...............................................................................................42
UPS Transition Time................................................................................................................................43
DC Power Requirements ................................................................................................................................43
Applicable Industry Standards................................................................................................................................43
Chapter 3: Installing an E4G Series Router ...........................................................................................45
Pre-installation Requirements ................................................................................................................................45
Installing the E4G-200 Cell Site Router..................................................................................................................46
Installing the Router in the Rack .....................................................................................................................47
Grounding the Router......................................................................................................................................48
Preparing the DC Power Input Cable..............................................................................................................49
Connecting the Router to DC Power...............................................................................................................50
Installing and Connecting a Clock Module ......................................................................................................51
Connecting Timing Cables to the E4G-200 Router..................................................................................52
Installing a T1/E1 Module................................................................................................................................52
Connecting the Alarms Cable .........................................................................................................................53
Installing the E4G-400 Cell Site Aggregation Router .............................................................................................54
Mid-Mounting an E4G-400 Router in a Two-Post Rack ..................................................................................55
Front-Mounting an E4G-400 Router in a Two-Post Rack................................................................................56
Installing an AC Power Supply........................................................................................................................57
Installing a DC Power Supply..........................................................................................................................58
Preparing the DC Cables .........................................................................................................................58
Installing the Power Supply......................................................................................................................59
Connecting the Ground Wire ...................................................................................................................60
Connecting the Power Supply to the DC Source Voltage........................................................................61
Installing Port Option Cards ............................................................................................................................63
Connecting Timing Cables to the E4G-400 Router.........................................................................................64
Connecting Cables to the E4G-B16T1E1 Module...........................................................................................65
Initial Startup ..........................................................................................................................................................66
Initial Management Access ....................................................................................................................................66
Connecting Equipment to the Console Port ....................................................................................................66
Logging In for the First Time ...........................................................................................................................67
PART 3: MAINTENANCE
Chapter 4: Maintenance Procedures ......................................................................................................71
Replacing an AC Power Supply in the E4G-400 Router ........................................................................................71
Replacing a DC Power Supply in the E4G-400 Router ..........................................................................................74
Removing the Power Supply...........................................................................................................................74
Installing the Replacement Power Supply.......................................................................................................75
Connecting the Ground Wire...........................................................................................................................75
Connecting the DC Power Cables ..................................................................................................................76
Replacing a Fan Module in the E4G-400 Router....................................................................................................78
Replacing Optional Ports in the E4G-400 Router...................................................................................................79
Replacing a Clock Module in the E4G-200 Router.................................................................................................80
Replacing a T1E1 Module in the E4G-200 Router .................................................................................................81
Removing an E4G-200 Router from an Equipment Rack.......................................................................................82
Removing an E4G-400 Router from an Equipment Rack.......................................................................................83
Removing a 300 W AC Power Supply.............................................................................................................83

Contents
E4G Series Routers Hardware Installation Guide
5
Removing a 300 W DC Power Supply ............................................................................................................83
Removing the E4G-400 Router from the Rack................................................................................................84
PART 4: APPENDICES
Appendix A: Safety Information..............................................................................................................87
Considerations Before Installing.............................................................................................................................88
General Safety Precautions ...................................................................................................................................88
Maintenance Safety................................................................................................................................................89
Cable Routing for LAN Systems.............................................................................................................................89
Installing Power Supply Units and Connecting Power............................................................................................90
Selecting Power Supply Cords...............................................................................................................................91
Battery Replacement and Disposal ........................................................................................................................92
Fiber Optic Ports and Optical Safety ......................................................................................................................92
SFP (Mini-GBIC), SFP+, and XFP Regulatory Compliance............................................................................93
Safety Information for the E4G Series Routers ......................................................................................................93
Appendix B: Technical Specifications .................................................................................................101
E4G-200 Cell Site Router.....................................................................................................................................101
E4G-400 Cell Site Aggregation Router.................................................................................................................105
Power Supplies for the E4G-400 Router ..............................................................................................................111
Power Cord Requirements for AC Power Supplies.......................................................................................112
E4G-200 Connector Pinouts ................................................................................................................................113
E4G-400 Connector Pinouts ................................................................................................................................116
Conformity Statements.........................................................................................................................................120
Declaration of Conformity to R&TTE Directive 1999/5/EC for the European Community, Switzerland, Norway,
Iceland, and Liechtenstein ............................................................................................................................120
EMC Class A Statements..............................................................................................................................121
International—CISPR 22 Class A ..........................................................................................................121
FCC Class A ..........................................................................................................................................121
Canada Class A .....................................................................................................................................121
Japan (VCCI Class A)............................................................................................................................121
Class A Notice for Taiwan and Other Traditional Chinese Markets.......................................................122
Telecom Approvals .......................................................................................................................................122
FCC Part 68 Notice................................................................................................................................122
Canada CS-03 Certification ...................................................................................................................122
Japan: JATE Green Book ......................................................................................................................123
GR-1089-CORE Issue 6 Documentation Statements ...................................................................................123
ESD Mitigation .......................................................................................................................................123
Telcordia GR-1089 NEBS Standard for Electromagnetic Compatibility and Safety...............................123
Intrabuilding Lightning Surge and AC Power Fault ................................................................................123
Equipment Bonding Networks................................................................................................................124
Equipment Interfacing with AC Power Ports ..........................................................................................124

Contents
E4G Series Routers Hardware Installation Guide
6

E4G Series Routers Hardware Installation Guide
7
Preface
This guide provides the instructions and supporting information needed to install the Extreme
Networks® E4G series routers.
The guide includes information about site preparation and router functionality.
Audience
This guide is intended for use by network administrators and equipment installers who are responsible
for installing and setting up network equipment. It assumes a basic working knowledge of:
●Standard equipment installation procedures, including remote location and electrical safety practices
●Local area networks (LANs)
●Ethernet concepts
●Ethernet switching and bridging concepts
●Routing concepts
●Time division multiplexing (TDM)
●Simple Network Management Protocol (SNMP)
See the ExtremeXOS Concepts Guide and the ExtremeXOS Command Reference Guide for information about
configuring Extreme Networks E4G series routers.
NOTE
If the information in an installation note or release note shipped with your Extreme Networks equipment
differs from the information in this guide, follow the installation or release note.

Preface
E4G Series Routers Hardware Installation Guide
8
Conventions
Table 1 and Table 2 list conventions used throughout this guide.
Related Publications
The documentation set for Extreme Networks ExtremeXOS®switches and routers includes:
● ExtremeXOS Concepts Guide
● ExtremeXOS Command Reference Guide
● ExtremeXOS Release Notes
● ExtremeXOS Hardware and Software Compatibility Matrix
●Extreme Networks E4G Series Routers Hardware Installation Guide (this guide)
● BlackDiamond 8800 Series Switches Hardware Installation Guide
● BlackDiamond X8 Series Switches Hardware Installation Guide
●BlackDiamond®20800 Series Switches Hardware Installation Guide (legacy product)
● BlackDiamond 10808 Switch Hardware Installation Guide (legacy product)
● BlackDiamond 12800 Series Switches Hardware Installation Guide (legacy product)
●Summit Family Switches Hardware Installation Guide
● Extreme Networks Pluggable Interface Modules Installation Guide
Hardware and software documentation for Extreme Networks products is available from the Extreme
Networks website at the following location:
http://www.extremenetworks.com/go/documentation
Table 1: Notice Icons
Icon Notice Type Alerts you to...
Note Important features or instructions.
Caution Risk of personal injury, system damage, or loss of data.
Warning Risk of severe personal injury.
Table 2: Text Conventions
Convention Description
Screen displays This typeface represents information as it appears on the screen, or command
syntax.
Words in italicized type Italics emphasize a point of information or denote new terms at the place where
they are defined in the text.
Book titles are printed in italics.

E4G Series Routers Hardware Installation Guide
9
Related Publications
You can download software concepts guides and reference guides, hardware installation guides, and
other documents.
Under your product warranty or with a current support contract, you can access software release notes
and entitled software from the eSupport web pages at:
https://esupport.extremenetworks.com/
For instructions on accessing and downloading software and software release notes, see the Technical
Assistance Center User Guide at:
http://www.extremenetworks.com/services/tac-userguide.aspx
NOTE
You must have an active support agreement or a product registered to you in order to receive an eSupport
login and access to Extreme Networks software release notes.
To request an eSupport user name and password, select the Request Web Login link on the eSupport
home page at:
https://esupport.extremenetworks.com
You can see complete information about all of our services online at:
http://www.extremenetworks.com/solutions/service-solutions.aspx

Preface
E4G Series Routers Hardware Installation Guide
10

PART
About the E4G Series
Routers

E4G Series Routers Hardware Installation Guide
13
CHAPTER
1
About the E4G Series Routers
This chapter describes the Extreme Networks E4G series routers and includes the following sections:
●Overview on page 13
●E4G-200 Cell Site Router on page 14
●E4G-400 Cell Site Aggregation Router on page 18
●Pluggable Interfaces for E4G Series Routers on page 25
Overview
The Extreme Networks E4G router family consists of the E4G-200 cell site router and the E4G-400 cell
site aggregation router. These routers provide high-bandwidth capacity, highly accurate and flexible
timing, and Operations Administration and Maintenance (OAM) capabilities that support service level
agreement (SLA) metrics. They support time-division multiplexing pseudowire end-to-end emulation
(TDM PWE3). PWE allows the simultaneous support of multiple generations of services (2G, 3G and
4G) over the same Ethernet backhaul network without having to remove legacy T1/E1 equipment and
incur associated costs.
The E4G-200 Cell Site Router collects traffic from cell site towers for handoff to the mobile backhaul
network. The E4G-200 router connects to the E4G-400 Cell Site Aggregation Router, which aggregates
T1, E1. and Ethernet traffic for handoff to the mobile core (see Figure 1).

Chapter 1: About the E4G Series Routers
E4G Series Routers Hardware Installation Guide
14
Figure 1: Mobile Backhaul Architecture
E4G-200 Cell Site Router
The Extreme Networks E4G-200 router provides 12 resilient synchronous Gigabit Ethernet ports and 16
T1/E1 ports in a compact 1RU unit. The Ethernet ports support both IEEE 1588v2 and Synchronous
Ethernet (SyncE) timing, and the T1/E1 ports support time division multiplexing (TDM) timing. The
router provides high-performance pseudowire capability, supporting both CESoPSN (channelized) and
SAToP (unframed and unchannelized) TDM services. Deployed at the cell site, the E4G-200 cell site
router collects traffic from 2G, 3G, and 4G radio towers for handoff to the mobile backhaul over fiber
or microwave.
The E4G-200 extended temperature range of -40°C to +65°C allows service providers to deploy the
E4G-200 router at sites without climate control.
The E4G-200 cell site router front panel (Figure 2) has the following features:
●Alarms port implemented as a DB-15 connector.
For details about the connector, see “E4G-200 Connector Pinouts” on page 113.
●Management and console ports
●Eight 10/100/1000BASE-T (RJ-45) dedicated ports
●Four 100/1000BASE-X (SFP) ports
These ports require Extreme Networks optical modules that are designed for use within the
temperature range of the router.
●Slot for hot-swappable clock module
●Slot for hot-swappable T1/E1 module with 16 ports
CSR_025
Data Center
Switch Servers and
Storage
Mobile Data
Center
Mobile Core
Cell Site
Router
Cell Site
Router
Cell-Site
Aggregation
Router
Cell-Site AggregationCell Site
Aggregation
Hub
Building Integrated
Timing System
Stratum Timing
GE over Fiber
Resilient Synchronous
Gigabit Ethernet
2G / 3G / 4G
2G/3G/4G
2G/3G/4G
Microwave
Microwave
2G/3G/4G Mobile Service
Core
Packet Core
Network

E4G-200 Cell Site Router
E4G Series Routers Hardware Installation Guide
15
●Grounding lug
●Redundant DC input power connectors
Figure 2: E4G-200 Cell Site Router Front Panel
The alarms interface is implemented as a DB-15 female connector. This interface relays alarms to an
external device (output alarms) and monitors alarms from an external device (input alarms). The alarms
are controlled from the ExtremeXOS software.
The alarms interface provides two input alarms and eleven output alarms. Input alarms can be
configured to monitor alarms from an external source and raise a trap or flag, or to be an input source
to clear Minor or Major alarms. The output alarms can be connected to an external visual or an audible
interface. The output alarms can be either persistent or non-persistent. For information about
configuring alarms, refer to the ExtremeXOS Concepts Guide.
For details about the connector, see “E4G-200 Connector Pinouts” on page 113.
The E4G-200 router has an integrated DC power supply with dual feeds on the front panel. Power
feed A can be connected to one power source and power feed B can be connected to a different power
source to provide protection should either source of power fail. The power supply is not
field-replaceable.
The back panel of the E4G-200 router provides an alternate attachment point for the grounding lug.
Status LEDs on the E4G-200 router are described in Table 3 on page 17.
CSR_020
1
78
2 3 54 6
1 = Alarms connection
2 = Management and console ports
3 = RJ-45 dedicated ports
4 = SFP ports
5 = Slot for E4G-200 CLK module
6 = Slot for F16T1E1 module
7 = Grounding lug
8 = DC input power connectors

Chapter 1: About the E4G Series Routers
E4G Series Routers Hardware Installation Guide
16
E4G-200 CLK Module
An optional clock module (Figure 3) for the E4G-200 router provides timing based on either of the
following protocols:
●ITU-T Synchronous Ethernet (SyncE) protocol
●Precision Time Protocol based on the IEEE specification 1588v2
The clock module has four mini-BNC connectors providing Sync In/Sync Out timing interfaces and an
RJ-45 connector that provides an RS-422 BITS-IN interface. Clock modules can be installed or removed
without powering down the router, although a system reboot is required to initialize the module.
Figure 3: E4G-200 Clock Module
E4G-200 F16T1E1 Module
The F16T1E1 module for the E4G-200 router provides 16 T1/E1 ports implemented as RJ-45 connectors
(Figure 4. These support circuit emulations via industry-standard pseudowires, allowing the
transformation of TDM cell sites to Ethernet/IP/MPLS cell sites. T1/E1 modules can be installed
or removed without powering down the router, although a system reboot is required to initialize
the module.
Figure 4: E4G-200 F16T1E1 Module
CSR_012
1 32
1 = LED
2 = Sync In/Sync Out interfaces
3 = BITS IN interface
CSR_015
1 2
1 = LEDs
2 = T1/E1 ports

E4G-200 Cell Site Router
E4G Series Routers Hardware Installation Guide
17
E4G-200 LEDs
Table 3 describes the LEDs on the E4G-200 Cell Site Router.
Table 3: LEDs on the E4G-200 Cell Site Router
Label/type Color/State Meaning
System LEDs
MGMT Steady green Power-on self- test (POST) passed, normal operation
Blinking green POST in progress
Amber POST failed or system has overheated.
Off No power
FAN Steady green Normal operation
Blinking amber Failure
Off No power
PSU-1, PSU-2 Steady green Normal operation.
Blinking amber Power failure.
Off No power attached to this connector.
MGMT Port LEDs
ACT Blinking green Packet transmitting or receiving
Off No packet transmitting or receiving
LINK Blinking green Link up
Off No link or port disabled
Port LEDs
Ports 1 through 8
(above ports) Steady green Link exists
Blinking green Activity occurring
Off No link or port is disabled
Ports 9
through 12
(on SFP cages)
Steady green Link exists
Blinking green Activity occurring
Off No link or port is disabled
Clock Module LED
PWR Steady green 3.3V power OK
Off No power
F16T1E1 Module LEDs
Local
(Alarm LED) Steady green Local alarm active
Blinking green Local alarm active but silenced
Off No local alarm active
Remote
(Alarm LED) Steady green Remote alarm active
Blinking green Remote alarm active but silenced
Off No remote alarm active
On-Line Steady green On line
Off Off line

Chapter 1: About the E4G Series Routers
E4G Series Routers Hardware Installation Guide
18
E4G-400 Cell Site Aggregation Router
The E4G-400 cell site aggregation router is a 1RU unit that allows networks to aggregate multiple
Ethernet links from various cell sites and route the traffic to the mobile core. The E4G-400 router
provides 28 Gigabit Ethernet ports and port options for up to six 10-Gigabit Ethernet ports, as well as a
16-port T1/E1 module with pseudowire capability. The T1/E1 module is used where 2G and 3G radios
are co-located at the aggregation site, and eliminates the need for separate cell site routers.
The Gigabit and 10-Gigabit Ethernet ports on the E4G-400 router support Synchronous Ethernet (SyncE)
and IEEE 1588v2 timing. Integrated timing connectors on the front panel provide timing based on either
the ITU-T Synchronous Ethernet (SyncE) protocol or the Precision Time Protocol based on IEEE
specification 1588v2. Four mini-BNC connectors providing Sync In/Sync Out timing interfaces and an
RJ-422 connector provides a BITS-IN interface.
The E4G-400 router has 4 shared ports. For each pair of shared ports, either the 10/100/1000BASE-T
port (RJ45) or 100/1000BASE-X (SFP) port can be used as needed.
The E4G-400 router supports stacking using ports on installed port option cards at the back of the unit.
Up to eight units can be connected into a single management entity that has up to 192 Gigabit Ethernet
ports and up to 32 10-Gigabit Ethernet ports.
At the back of the unit are two bays for either AC or DC power supplies. One 300 W AC or DC power
supply is included with the base unit. A redundant power supply must be ordered separately. You can
mix any combination of 300 W AC and DC power supplies based on the need at the particular site. For
example, you can have a DC main power feed and an AC input backup from an uninterruptible power
supply (UPS).
The front panel of the E4G-400 router (Figure 5) has the following features:
●Twenty 10/100/1000BASE-T (RJ-45) dedicated ports
●Four 100/1000BASE-X (SFP) or 10/100/1000BASE-T (RJ-45) shared ports
●Four 100/1000BASE-X (SFP) dedicated ports
●Timing interfaces
●BITS-IN interface
●Console port
●Stack number indicator
●Management and USB ports
PWR Steady green Normal operation
Off No power
Port LEDs
(1 through16) Steady green Link OK
Blinking green Activity
Off No link, or port is disabled.
Table 3: LEDs on the E4G-200 Cell Site Router (Continued)
Label/type Color/State Meaning

E4G-400 Cell Site Aggregation Router
E4G Series Routers Hardware Installation Guide
19
Figure 5: E4G-400 Front Panel
Status LEDs on the E4G-400 router are described in Table 4 on page 20.
The rear panel of the E4G-400 router (Figure 6) has the following features:
●Slot A for one of the following port option cards:
- XGM3S-2xf option card (2 XFP with Sync-E for stacking or data links)
- XGM3S-2sf option card (2 SFP+ with Sync-E for stacking or data links)
●Slot B for one of the following optional port cards:
- XGM3SB-4sf option card (4 SFP+ with Sync-E for data links)
- E4G-B16T1E1 option card (2 MRJ21 with 8 TDM ports per MRJ21 connector)
Option cards in Slot A and Slot B are hot-pluggable.
●Hot-swappable fan tray
●Two bays for AC or DC power supplies
To provide redundant power to the router, you can install two AC power supplies, two DC power
supplies, or a combination of an AC and DC power supply.
Figure 6: E4G-400 Back Panel
CSR_001
2 3 41
8
7
5 6
1 = RJ-45 ports
2 = SFP ports
3 = Timing connections (Mini-BNC connectors)
4 = BITS IN connector (RJ-45 connector)
5 = Stack number indicator
6 = Management and USB ports
7 = Shared ports
8 = Console port
CSR_021
1 2 3 4
1 = Slot A
2 = Slot B
3 = Fan tray
4 = Power supply bays

Chapter 1: About the E4G Series Routers
E4G Series Routers Hardware Installation Guide
20
Combination Ports on the E4G-400 Router
The E4G-400 Cell Site Aggregation Router provides four uplink ports implemented as combination
ports that pair a copper port using RJ-45 connectors with an optical port using LC connectors. The
copper port operates as an autonegotiating 10/100/1000BASE-T port. The optical port allows Gigabit
Ethernet uplink connections through Extreme Networks small form factor pluggable (SFP) interface
modules.
The E4G-400 router supports automatic failover from an active fiber port to a copper backup or from an
active copper port to a fiber port. If one of the uplink connections fails, the uplink connection
automatically fails over to the second connection. To set up a redundant link on a combination port,
connect the active 1000BASE-T and fiber links to both the RJ-45 and SFP interfaces of that port.
Gigabit Ethernet uplink redundancy on the E4G-400 router follows these rules:
●With both the SFP and 1000BASE-T interfaces connected on a combination port, only one interface
can be activated. The other is inactive.
●If only one interface is connected, the switch activates the connected interface.
●The router determines whether the port uses the fiber or copper connection based on the order in
which the connectors are inserted into the router. When the router senses that an SFP and a copper
connector are inserted, the router enables the uplink redundancy feature. For example, if you first
connect copper ports 21 and 22, and then insert SFPs into optical ports 21 and 22, the router assigns
the copper ports as active ports and the fiber ports as redundant ports.
Hardware identifies when a link is lost and responds by swapping the primary and redundant ports to
maintain stability. After a failover occurs, the router keeps the current port assignment until another
failure occurs or a user changes the assignment using the CLI. For more information about configuring
automatic failover on combination ports, see the ExtremeXOS Concepts Guide.
LEDs
Table 4 describes the LEDs on the E4G-400 Cell Site Aggregation Router
Table 4: LEDs on the E4G-400 Cell Site Aggregation Router
Type/Label Color/State Meaning
Front Panel LEDs
MGMT Steady green Power-on self test (POST) completed successfully; normal
operation.
Blinking green POST is in progress.
Amber POST failed, or the system has over-heated.
Off No external power attached.
FAN Steady green Normal operation.
Blinking amber Failure.
Off No power.
PSU-1, PSU-2 Steady green Normal operation.
Steady amber Power is attached, but no power is on.
Blinking amber Failure.
Off No power is attached.