Gsm-2108/Gsm-1008Sfp - Waters Network Systems GSM2108 Operating Manual

Table of Contents

The following table describes the cable and devices' bit-time delay (round trip):

1000Base-X TP, Fiber

Round trip Delay: 4096

CAT5

Fiber

Bit time unit: 1ns (1sec./1000 Mega bit)

Sum up all elements' bit-time delay and the overall bit-time delay of wires/devices must be

within Round Trip Delay (bit times) in a half-duplex network segment (collision domain). This will

not be applied for full duplex operation. You may use the TP-Fiber module to extend the TP

node distance over fiber optic and provide the long haul connection.

A hierarchical network with minimum levels of switching may reduce the timing delay between

server and client station. Basically, with this approach, it will minimize the number of switches in

any one path; will lower the possibility of network loop and will improve network efficiency. If

more than two switches are connected in the same network, select one switch as Level 1 switch

and connect all other switches to it at Level 2. It is recommended to connect the Server/Host to

the Level 1 switch. This generally applies if no VLAN or other special requirements are applied.

Example 1:

All switch ports are in the same local area network.

each other (See Figure 2-2).

If VLAN is enabled and configured, each node in the network that can communicate with each

other directly is contained in the same VLAN area.

In Example 2, the VLAN area is defined by the configured VLAN. The switch supports both port-

based VLAN and tag-based VLAN. They are different in practical deployment, especially in

physical locations. The following diagram shows how the VLAN works.

Example 2a: Port-based VLAN (See Figure3-5).

Waters Network Systems

100Base-TX TP

11.12/m

CAT5

10.10/m

TP to fiber converter: 56

Bit time unit: 0.01μs (1sec./100 Mega bit)

Table 3-2

Figure 3.4 - No VLAN Configuration Diagram

User's Manual