Bridge/Router Installation and Configuration Guide

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Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
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Chapter 2 Preparing for Installation
GRP Port Connection Guidelines
Table 2-6 lists the cabling specifications for 100-Mbps transmission over
unshielded twisted-pair (UTP) cables.
Table 2-7 lists IEEE 802.3u physical characteristics for 100BASE-TX cabling.
Ta b l e 2-6 Specifications and Connection Limits for 100-Mbps Transmission
Parameter RJ-45 MII
Cable specification Category 5
1
UTP, 22 - 24 AWG
2
1. EIA/TIA-568 or EIA-TIA-568 TSB-36 compliant. Not supplied by Cisco.
2. AWG = American Wire Gauge. This gauge is specified by the EIA/TIA-568 standard.
Category 3, 4, or 5, 150-ohm UTP or STP,
or multimode optical fiber
Cable length (max) — 1.64 ft (0.5 m) (MII-to-MII cable
3
)
3. The cable between the MII port on the GRP and the appropriate transceiver.
Segment length (max) 328 ft (100 m) for 100BASE-TX 3.28 ft (1 m)
4
or 1,312 ft (400 m)
for 100BASE-FX
4. Specifically, the length between any two stations on a repeated segment.
Network length (max) 656 ft (200 m)
4
with 1 repeater —
Ta b l e 2-7 IEEE 802.3u Physical Characteristics
Parameter 100BASE-TX
Data rate (Mbps) 100
Signaling method Baseband
Segment length (max meters) 100 m between DTE and repeaters
Media Category 5 UTP (for RJ-45) or MII
Topology Star/hub