Foundation Summary
Foundation Summary is a section presented in a concise format to provide quick reference information relating to the objectives covered in this chapter.
Table 4-11 Ethernet CSMA/CD Based Media
Specification |
Speed |
Max Segment Size |
Encoding |
Media |
10Base5 |
10 Mbps |
500m |
Manchester |
0.4in 50ohm Coax (Thicknet) |
10Base2 |
10 Mbps |
185m |
Manchester |
0.2in 50ohm Coax (Thinnet) |
10BaseT |
10 Mbps |
100m |
Manchester |
UTP |
100BaseT |
100 Mbps |
100m |
4B/5B |
UTP |
1000BaseT |
1000 Mbps |
100m |
5-level |
Cat 5 UTP |
1000BaseLX (long wave) |
1000 Mbps |
550m |
8B/10B |
Single/multimode fiber |
1000BaseSX (short wave) |
1000 Mbps |
62.5 micrometers: 220m 50 micrometers: 500m |
8B/10B |
Multimode fiber |
1000BaseCX |
1000 Mbps |
25m |
8B/10B |
Shielded balanced copper |
Table 4-12 Token Access Based Media
Type |
Speed |
Ring types |
Encoding |
Media |
Token Ring |
4/16 Mbps |
Unidirectional single ring |
Differential Manchester |
UTP, STP |
FDDI |
100 Mbps |
Dual counter rotation rings |
4B/5B with nonreturn to zero inverted (NRZI) |
Fiber |
Table 4-13 Network Devices
Device |
OSI Layer |
Protocol |
Domains |
Understands |
Repeaters |
Layer 1: Physical |
Transparent |
Amplify signal |
Bits |
Hubs |
Layer 1: Physical |
Transparent |
Amplify signal |
Bits |
Bridges |
Layer 2: Data link |
Transparent |
Collision domain |
Frames |
Switches |
Layer 2: Data link |
Transparent |
Collision domain |
Frames |
Routers |
Layer 3: Network |
Aware |
Broadcast domain |
Packets |
Layer 3 Switches |
Layer 3: Network |
Aware |
Broadcast domain |
Packets |
Table 4-14 LAN Types
LAN Type |
Characteristics |
Large building LAN |
Large number of users, data center, floor closet switches |
Campus LAN |
High-speed backbone switching |
Small/remote LAN |
Small number of users, small hubs/switches |