|
|
This chapter describes the PA-A3 OC-12 and contains the following sections:
The PA-A3 OC-12 (see Figure 1-1 and Figure 1-2) is a dual-width ATM port adapter that provides a single-port, 622.08 Mbps connection from Cisco 7500 series routers to any ATM switch. The PA-A3 OC-12 includes two hardware versions (PA-A3-OC12MM and PA-A3-OC12SMI) that support the following standards-based physical interfaces:
 |
Note To allow a full view of the port adapter faceplate detail, port adapter handles are not shown in the following illustrations. |
|
Note Although the VIP4 supports online insertion and removal (OIR), individual port adapters do not. To replace port adapters, you must first remove the VIP4 from the chassis, and then replace port adapters as required. |
The PA-A3 OC-12 supports the following features:
The PA-A3 OC-12 supports the following protocols, services, and ATM-specific software:
The PA-A3 OC-12 complies with the environmental specifications and agency approvals listed in Table 1-1.
| Environmental | |
|---|---|
Operating temperature | 50 to 104°F (10 to 40°C) |
Humidity | 0 to 90%, noncondensing |
| Regulatory Compliance | |
Compliance:
| CE Marking UL 1950, CSA-C22.2 No. 950, EN 60950, IEC 950, FCC Class A (47 CFR, Part 15), EN 55022, Class B and VCCI Class B, AS/NZS 3590, Class B |
The PA-A3 OC-12 has one row of four status LEDs and one enabled LED. (See Figure 1-3.) Table 1-2 describes what each LED indicates.
| LED | Color | State | Description |
|---|---|---|---|
ENABLED | Green | On | Port adapter is enabled for operation. |
RX CELLS | Green | Flashing or On | Port adapter is receiving an ATM cell or a steady stream of ATM cells. |
RX CARRIER | Green | On | Valid frame is detected. |
RX ALARM | Red | On | Router has detected an alarm condition (such as loss of signal [LOS], loss of frame [LOF], or remote defect indication [RDI]. |
TX CELLS | Green | Flashing or On | Port adapter is transmitting an ATM cell or a steady stream of ATM cells. |
After system initialization, the enabled LED goes on, indicating that the PA-A3 OC-12 has been enabled for operation.
The following conditions must be met before the PA-A3 OC-12 is enabled:
If any of these conditions are not met, or if the initialization fails for other reasons, the enabled LED does not go on.
Use a single-mode or multimode fiber-optic interface cable to connect your Cisco 7500 series router to another router or switch. In general, multimode cables are gray or orange, and single-mode cables are yellow.
|
Note Single-mode and multimode fiber-optic cables are available from the following cable vendors: AMP, Anixter, AT&T, Red Hawk, and Siemens. These cables are not available from Cisco Systems. |
For SONET/SDH single-mode and multimode fiber-optic connections, use one duplex SC-type connector (see Figure 1-4) or two simplex SC-type connectors (see Figure 1-5).
Attach either one duplex fiber-optic cable or two simplex fiber-optic cables between the port adapter and the device to which the port adapter is connected. Observe the receive (RX) and transmit (TX) cable relationship shown in Figure 1-6.
The following warnings apply when you work with fiber-optic cable ports.
 |
Warning Invisible laser radiation can be emitted from the aperture of the port when no cable is connected. Avoid exposure to laser radiation and do not stare into open apertures. |
|
Warning Class 1 laser product (single-mode). |
|
Warning Class 1 LED product (multimode). |
This section discusses port adapter slot locations on the supported platform. The illustrations that follow summarize slot location conventions.
Figure 1-7 shows a partial view of a VIP4 motherboard with installed port adapters. With the motherboard oriented as shown in Figure 1-7, the left port adapter is in port adapter slot 0, and the right port adapter is in port adapter slot 1. The slots are always numbered 0 and 1.
|
Note In the Cisco 7507, and Cisco 7513 chassis, the VIP4 motherboard is installed vertically. In the Cisco 7505 chassis, the VIP4 motherboard is installed horizontally. |
When a dual-width port adapter is installed on a VIP motherboard (see Figure 1-8), the port adapter is always considered to be in port adapter slot 0.
|
Note In the Cisco 7507, and Cisco 7513 chassis, the VIP motherboard is installed vertically. In the Cisco 7505 chassis, the VIP motherboard is installed horizontally as shown in Figure 1-9. |
Interface processor slots are numbered as shown in Figure 1-9.
This section describes how to identify the interface address for a PA-A3 OC-12 installed on a VIP4 in a Cisco 7500 series router. Interface addresses specify the actual physical location of each interface on a router or switch.
The interface on a PA-A3 OC-12 installed on a VIP4 maintains the same address regardless of whether other interface processors are installed or removed. However, when you move a VIP4 to a different slot, the interface processor slot number changes to reflect the new interface processor slot.
For example, the address of the PA-A3 OC-12 is 3/0/0 when installed in interface processor slot 3. (See Figure 1-9.) If the PA-A3 OC-12 were in interface processor slot 2, its address would be 2/0/0.
Table 1-3 explains how to identify interface addresses.
| Platform | Interface Address Format | Numbers | Syntax |
|---|---|---|---|
VIP4 in Cisco 7500 series routers | Interface-processor-slot-number/ | Interface processor slot---0 through 12 (depends on the number of slots in the router) Port adapter slot---always 0 for the PA-A3 OC-12 Interface port---always 0 for the PA-A3 OC-12 | 3/0/0 |
|
Note Although the processor slots in the 7-slot Cisco 7507 and the 13-slot Cisco 7513 and Cisco 7576 are vertically oriented and those in the 5-slot Cisco 7505 are horizontally oriented, all Cisco 7500 series routers use the same method for slot and port numbering. |
Posted: Wed Jun 21 14:15:43 PDT 2000
Copyright 1989 - 2000©Cisco Systems Inc.