Allied-telesis AT-MR912TX Manual de usuario descargar pdf (Pagina 40)

Installation

7. Check the front panels to make sure the green power (PWR) LEDs are

illuminated.

8. As Figure 13 on page 18 illustrates, Port 12 (MDI) of the bottom hub is

connected to Port 11 on the upper hub in the cascaded sequence.

9. Plug all Category 5 STP/UTP cables into the 100Base-TX network ports

(RJ-45 connectors) on the front of the units.

10. Plug the opposite end of each 100Base-TX cable into a network node or

workstation as appropriate.

Collision Domain Diameters

A summary of the Collision Domain Diameters for 802.3u is shown in Table 8:

Table 8: Collision Domain Diameters per IEEE Standard 802.3u

Note

The Collision Domain Diameter for a Class II repeater cannot exceed

205 meters. That is, the hub-to-device connection should never be

more than 100 meters and the inter-repeater connection should be 5

meters.

Note, however, that this inter-repeater link can be greater if all

device-to-repeater links are shortened. You simply have to ensure

that the overall Collision Domain Diameter does not exceed 205

meters.

You are now ready to operate your AT-MR912TX hubs in a cascaded hub

conﬁguration.

Model All Copper All Fiber

T4 and

Fiber

TX and

Fiber

DTE to DTE 100m 412m na na

1 Class I Repeater 200m 272m 231m* 260.8m*

1 Class II Repeater 200m 320m 304m* 308.8m*

2 Class II repeaters 205m 228m 236.3m** 216.2m**

*Assumes 100m of copper + one fiber link

**Assumes 105m of copper + one fiber link

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 67 68

Sin comentarios

Allied-telesis AT-MR912TX Manual de usuario Pagina 40