Cabling Requirements; Twisted-Pair Ports; Fiber Transceiver Ports; Switch Cascading - Black Box 12-Port 1000BASE-TX L2 Managed PoE Switch User Manual

12-Port 1000BASE-TX L2 Managed PoE
Switch with 2 SFP Dual Media Ports

3.3 Cabling Requirements

3.3.1 T -P P
WISTED AIR ORTS
For Fast Ethernet or Gigabit Ethernet twisted-pair (TP) connections, use CAT5 or CAT5e cable up to 328 feet
(100 m) long.
3.3.2 F T
IBER RANSCEIVER
For Gigabit Ethernet fiber transceiver ports, use fiber optic cable as described below.
• 62.5/125-μm multimode Gigabit fiber with multimode LC SFP module (LGB200C-MLC).
• 9/125-μm single-mode Gigabit fiber with single-mode LC SFP module (LGB200C-SLC10 orLGB200C-SLC30).
• 9/125-μm single-strand single-mode Gigabit fiber with BiDi LC1310-nm SFP module (LGB204C).
• 9/125-μm single-strand single-mode Gigabit fiber with BiDi LC1550-nm SFP module (LGB205C).
3.3.3 S C
WITCH ASCADING
Theoretically, the switch partitions the collision domain for each port in switch cascading so that you may
up-link an unlimited number of switches. In practice, the network extension (cascading levels and overall
diameter) must comply with the IEEE 802.3/802.3u/802.3z and other 802.1 series protocol specifications,
which limit the timing requirement from physical signals defined by the Media Access Control (MAC) and
PHY802.3 series specification, and timer from some OSI layer 2 protocols such as 802.1d, 802.1q, and LACP.
The fiber, TP cables, and devices' bit-time (round-trip) delay are as described in Table 3-1.
Figure 3-2. Installing the switch chassis in a 19"rack.
P
ORTS
CHAPTER 3: Installation
17