Preparing to Install the Cisco Multiport Serial Routers 2-9
Cabling Considerations
Distance Limitations
Following are the distance limitation specifications for Ethernet, Token Ring, and serial
interfaces.
Ethernet Connections
The distance limitations for the IEEE 802.3 (10Base5 coaxial cable) specification indicate
a maximum segment distance of 1,640 feet (500 m) at a transmission rate of 10 megabits
per second (Mbps).
The distance limitations for Ethernet 10BaseT indicate a maximum segment distance of
328 feet (100 m); Ethernet 10Base2 has a maximum segment distance of 606 feet (185 m).
Token Ring Connections
The distance limitations for the IEEE 802.5 specification indicate a maximum segment
distance of 328 feet (100 m) at a transmission rate of 4 or 16 Mbps for unshielded
twisted-pair (UTP) cable. The distance limitation when using shielded twisted-pair (STP)
cabling is 1,640 feet (500 m).
Serial Connections
As with all signaling systems, EIA/TIA-232 signals can travel a limited distance at any
given bit rate; generally, the slower the data rate, the greater the distance. Table 2-1 shows
the standard relationship between baud rate and maximum distance.
Table 2-1
EIA/TIA-232 Speed and Distance Limitations
Data Rate
(Baud)
Distance
(Feet)
Distance
(Meters)
2400
200
60
4800
100
30
9600
50
15
19200
50
15
Содержание CPA2501
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Страница 41: ...Installing the Router 3 9 Setting Up the Chassis Figure 3 9 Wall Mounting the Chassis H6572 TOKEN RING ...
Страница 54: ...3 22 Router Installation and Configuration Guide What to Do after Installing the Router Hardware ...
Страница 78: ...4 24 Router Installation and Configuration Guide Getting More Information ...
Страница 84: ...A 6 Router Installation and Configuration Guide Reading the LEDs ...
Страница 122: ...C 24 Router Installation and Configuration Guide ISDN BRI Port and Cable Pinouts ...
Страница 138: ...2 16 Cisco 2500 Series Multiport Serial Router User Guide Inspecting the System ...