Foundation Summary

The Foundation Summary is a collection of tables that provides a convenient review of many key concepts in this chapter. If you are already comfortable with the topics in this chapter, this summary might help you recall a few details. If you just read this chapter, this review should help solidify some key facts. If you are doing your final prep before the exam, the following tables are a convenient way to review the day before the exam.

Table 5-6. Ethernet Standards

Ethernet Type	Media Name	Standard Name
10-Mbps Ethernet	10BASE-X	IEEE 802.3
Fast Ethernet	100BASE-X	IEEE 802.3u
Gigabit Ethernet	1000BASE-X	IEEE 802.3z (fiber) IEEE 802.3ab (UTP)
10-Gigabit Ethernet	10GBASE-X	IEEE 802.3ae

Table 5-7. Ethernet Cabling Specifications

Technology	Wiring Type	Pairs	Cable Length
10BASE-T	EIA/TIA Category 5 UTP	2	100 m
100BASE-TX	EIA/TIA Category 5 UTP	2	100 m
100BASE-T2	EIA/TIA Category 3, 4, 5 UTP	2	100 m
100BASE-T4	EIA/TIA Category 3, 4, 5 UTP	4	100 m
100BASE-FX	Multimode fiber (MMF); 62.5-micron core, 125-micron outer cladding (62.5/125)	1	400 m half duplex 2000 m full duplex
	Single-mode fiber (SMF)	1	10 km
1000BASE-CX	Shielded twisted pair (STP)	1	25 m
1000BASE-T	EIA/TIA Category 5 UTP	4	100 m
1000BASE-SX	MMF with 62.5-micron core; 850-nm laser	1	275 m
	MMF with 50-micron core; 850-nm laser	1	550 m
1000BASE-LX/LH	MMF with 62.5-micron core; 1300-nm laser	1	550 m
	SMF with 50-micron core; 1300-nm laser	1	550 m
	SMF with 9-micron core; 1300-nm laser	1	10 km
1000BASE-ZX	SMF with 9-micron core; 1550-nm laser	1	70 km
	SMF with 8-micron core; 1550-nm laser	1	100 km
10GBASE-SR/SW (850 nm serial)	MMF: 50 micron MMF: 62.5 micron	1 1	66 m 33 m
10GBASE-LR/LW (1310 nm serial)	SMF: 9 micron	1	10 km
10GBASE-ER/EW (1550 nm serial)	SMF: 9 micron	1	40 km
10GBASE-LX4 (1310 nm WWDM)	MMF: 50 micron MMF: 62.5 micron SMF: 9 micron	1 1 1	300 m 300 m 10 km

Table 5-8. Switch Port Configuration Commands

Task	Command Syntax
Select a port	interface type module/number
Select multiple ports	interface range type module/number [, type module/number ...] or interface range type module/first-number last-number
Define an interface macro	define interface-range macro-name type module/number [, type module/number ...] [type module/first-number last-number] [...] interface range macro macro-name
Identify port	description description-string
Set port speed	speed {10 | 100 | 1000 | auto}
Set port mode	duplex {auto | full | half}
Detect port error conditions	errdisable detect cause [all | cause-name]
Automatically recover from errdisable	errdisable recovery cause [all | cause-name] errdisable recovery interval seconds
Manually recover from errdisable	shutdown no shutdown