Black Box Mixed-Media Fiber Hubs
Installation and User Guide (4/99)
iv
TABLE OF CONTENTS PAGE
1.
T
ECHNICAL
S
PECIFICATIONS
,
H
UB
C
HASSIS
................................................................... 1
1.1 Specifications - Port Modules (PMs) for front ports ........................................ 3
1.2 Specifications - Switch Port Module (SPM) for bonus port.............................. 3
1.3 Ordering Information .......................................................................................... 4
2.
I
NTRODUCTION
-
LH8050A
M
IXED
-
MEDIA FIBER HUB
............................................ ……5
2.1 Inspecting the Package and Product.................................................................... 5
2.2 General Information ............................................................................................ 6
2.3 Product Description - LH8050A Fiber Hub ........................................................ 6
2.3.1 The LH8050A Fiber Hub Chassis ........................................................... 7
2.4 Port Modules (PMs) ........................................................................................... 8
2.5
Hubs with Switch Port Modules (SPMs) built in ............................................. 9
2.5.1 LH8050A-SST ...................................................................................... 12
2.5.2 LH8050A-SSC ...................................................................................... 13
2.5.3 LH8050A-SSCSM................................................................................. 14
2.5.4 LH8050A-SRJ ....................................................................................... 14
2.5.5 SPM Specificatons Summary Table...................................................... 14
2.6 10/100 Speed Auto-Sensing (front ports, copper only) ..................................... 14
2.7 Stacking Mixed-Media LH8050A..................................................................... 14
2.8 Bridge module between the 10/100Mbps domains ........................................... 16
2.9 Features and Benefits ........................................................................................ 17
2.10 Applications .................................................................................................... 18
3.
INSTALLATION
-
LH8050A
I
NSTALLATION
...................................................... ……21
3.1 Locating the LH8050A ................................................................................ 21
3.2 Connecting Ethernet Media.......................................................................... 21
3.3 Connecting Fiber Optic ST-type “twist-lock”.............................................. 22
3.4 Connecting Fiber Optic SC-type “snap-in”.................................................. 22
3.5 Connecting Fiber Optic Single-Mode ........................................................ 23
3.7 Connecting Twisted-Pair, RJ-45 .................................................................. 23
3.6.1 100Mbps collision domain diameter, cable distances and PDV ....... 24
3.6.2 Connection to NICs, that support Auto-negotiation .......................... 27
3.7 Table-Top or Shelf Mounting ...................................................................... 27
3.8 Rack-Mounting ............................................................................................ 27
3.9 Port Module (PM) Installation .................................................................... 28
3.9.1 Preparation for Installing and Removing PMs ................................. 28
3.9.2 Installing PM Cards in the LH8050A................................................ 30
3.9.3 Removing PM cards.......................................................................... 31
3.10 Powering the LH8050A ............................................................................. 32
