EXP Computer PathBuilder S200 - Manual (Page 10)

6 Bridging
Bridging Features and Capabilities
Ethernet LAN
What Is It? Ethernet is a common implementation of LAN topology wherein stations are
connected using a bus topology. Stations access the Ethernet using Carrier Sense
with Multiple Access and Collision Detection (CSMA/CD).
PathBuilder S200
Series Switch
Support for
Ethernet PathBuilder S200 series switch Ethernet functionality complies with the IEEE 802.3
specifications and provides Transparent Bridging to transport many different
protocols over the Wide Area Network (WAN) to remote destinations. Supported
protocols include:
• Novell Netware
• DECnet
• Banyan Vines
Example of Basic
Ethernet Frame
Format Figure 3 shows the basic frame formats for Ethernet frames supported by
PathBuilder S200 series switches.
Figure 3. Frame Format for Ethernet Frames
802.3 MAC Frame
Format Figure 4 shows the supported 802.3 Ethernet MAC Frame format.
Figure 4. 802.3 Ethernet MAC Frame Format Example
Preamble
Ethernet Frame Format
Destination Source Type Data FCS
8 Octets
64-1518
6 6 2 4 45-1500
Preamble
802.3 MAC Frame Format
SFD Destination Source Len Data Unit Pad FCS
DSAP SSAP Control Higher Layer Information
1 1 1 or 2
Octets 42-1497
802.3.LLC