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The Catalyst 2900 series switches support four types of ATM modules.
Each module provides a physical-layer interface between the ATM module and an ATM switch. You can use the ATM module to connect workstations, hubs, and other switches to the following ATM devices:
Figure 1-1 shows a typical ATM-to-LAN topology. Two Catalyst 2900 series switches are connected to other ATM-supported devices through the ATM modules. The link between the LightStream 1010 ATM switch and the other devices provides 155 Mbps of bandwidth over a 2-kilometer MM fiber-optic cable, 15-kilometer medium-reach SM fiber-optic cable, 40-kilometer long-reach SM fiber-optic cable, or 100-meter UTP cable.
Each ATM module includes the following features:
Each ATM module supports the following ATM management features:
Each ATM module complies with the following standards:
The ATM 155 MM Fiber module (shown in Figure 1-2) is a multimode ATM module that has one LED and one SC fiber-optic connector.
The indicator on the front panel of the MM Fiber module illuminates in two-colors to indicate the operating status of the module. The LED is described in Table 1-1.
| Color | Operating Status |
|---|---|
Green | The module port is connected to an operational ATM switch at the remote end; it is steady when there is no activity. |
Flashing green | The module is transmitting or receiving data. The LED flashes rapidly when the traffic level is high. |
Amber | The module is disabled because it did one of the following:
|
Off | The module is not connected to the ATM network of the Catalyst 2900 series switches or another ATM device. |
The ATM 155 MM Fiber module requires an SC connector and fiber-optic cable as shown in Figure 1-3. The maximum distance for multimode fiber-optic network connections is 2 kilometers.
The module transmits data through the transmit (Tx) fiber-optic port and receives data from the receive (Rx) fiber-optic port. The fiber-optic port transmits on a 1300-nanometer wavelength.
The ATM 155 SM Fiber modules (shown in Figure 1-4 and Figure 1-5) consist of two single-mode ATM modules: a medium-reach version (SM-MR) and a long-reach version (SM-LR). Like the ATM 155 MM Fiber module, the ATM 155 SM Fiber modules have one LED and one SC fiber-optic connector.
The indicator on the front panels of the SM-MR and SM-LR Fiber modules illuminates in two-colors to indicate the operating status of the modules. The LED is described in Table 1-2.
| Color | Operating Status |
|---|---|
Green | The module port is connected to an operational ATM switch at the remote end; it is steady when there is no activity. |
Flashing green | The module is transmitting or receiving data. The LED flashes rapidly when the traffic level is high. |
Amber | The module is disabled because it did one of the following:
|
Off | The module is not connected to the ATM network of the Catalyst 2900 series switches or another ATM device. |
The ATM 155 SM-MR and SM-LR Fiber modules require an SC connector and fiber-optic cable as shown in Figure 1-6. The maximum distance for single-mode fiber-optic network connections is 15 kilometers for medium reach and 40 kilometers for long reach.
The module transmits data through the transmit (Tx) fiber-optic port and receives data from the receive (Rx) fiber-optic port. The fiber-optic port transmits on a 1300-nanometer wavelength.
The ATM 155 UTP module (shown in Figure 1-7) has one LED indicator and one RJ-45 connector.
The indicator on the front panel of the ATM 155 UTP module illuminates in two colors to indicate the operating status of the module. The LED is described in Table 1-3.
| Color | Operating Status |
|---|---|
Green | The module port is connected to an operational ATM switch at the remote end; it is steady when there is no activity. |
Flashing green | The module is transmitting or receiving data. The LED flashes rapidly when the traffic level is high. |
Amber | The module is disabled because it did one of the following:
|
Off | The module is not connected to the ATM network of the Catalyst 2900 series switches or another ATM device. |
The ATM 155 UTP module requires an RJ-45 connector and Category 5 UTP straight-through cable as shown in Figure 1-8. The maximum distance for UTP network connections is 328 feet (100 meters).
The RJ-45 connector shown in Figure 1-9 is on the ATM 155 UTP module front panel. The figure also lists the pin assignments.
Posted: Mon Mar 20 15:37:47 PST 2000
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