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This chapter describes the PA-2H port adapter and contains the following sections:
The PA-2H dual-port HSSI port adapter (PA-2H, Rev. B), shown in Figure 1-1, provides two high-speed serial interfaces. The interfaces on the PA-2H are considered to be data terminal equipment (DTE) devices. (Port adapters have a handle attached, but this handle is occasionally not shown in figures in this document to allow a full view of detail on the port adapter faceplate.)
The HSSI network interfaces reside on modular port adapters, which provide a direct connection between the high-speed bus in the router or switch and the external networks.
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Note Although the VIP2, VIP4, and Catalyst RSM/VIP2 support online insertion and removal (OIR), individual port adapters do not. To replace port adapters, you must first remove the VIP2, VIP4, or Catalyst RSM/VIP2 from the chassis, and then replace port adapters as required. Cisco 7100 series, Cisco 7200 series, and Cisco uBR7200 series routers support OIR of all port adapter types. |
The newest dual-port PA-2H can be identified by Rev. B in the lower right corner of its front-panel label (see Figure 1-1). The older dual-port PA-2H does not have Rev. B on its label (see Figure 1-2).
To determine which PA-2H model you currently have installed, examine the front-panel label, or use the show diag command. (For information on using the show diag command, see "Configuring the PA-2H.")
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Note You should replace older PA-2H port adapters with the newer PA-2H Rev. B port adapter. Contact Cisco's Technical Assistance Center (TAC) for replacement details. (For information on the TAC, see the "Obtaining Documentation" section.) |
The PA-2H conforms to the BABT/TC/130, EIA/TIA-612, and EIA/TIA-613 standards for HSSI. The PA-2H provides two interfaces. Each interface provides a full-duplex high-speed synchronous serial interface (HSSI) for transmitting and receiving data at rates of up to 52 megabits per second (Mbps).
The HSSI, which has been standardized as EIA/TIA 612/613, provides access to services at T3 (45 Mbps), E3 (34 Mbps), and Synchronous Optical Network (SONET) STS-1 (51.82 Mbps) rates. The actual rate of the interface depends on the external DSU and the type of service to which it is connected.
Each HSSI port on the PA-2H is a female 50-pin SCSI-II-type receptacle. You must use an HSSI interface cable from Cisco Systems to connect the interface to an external data service unit (DSU). See the "Cables, Connectors, and Pinouts" section for descriptions of HSSI cables.
The PA-2H supports both 16- and 32-bit cyclic redundancy checks (CRCs). The default is 16-bit CRCs; to enable 32-bit CRCs, you use a configuration command. (For a description of the CRC function, see "Configuring the PA-2H.")
The PA-2H has two rows of five status LEDs (one row of five for each HSSI port) and one enabled LED. (See Figure 1-3.) The green- and amber-colored LED for each port indicates port status.
After system initialization, the enabled LED goes on to indicate that the port adapter has been enabled for operation.
The following conditions must be met before the PA-2H is enabled:
If any of the above conditions are not met, or if the initialization fails for other reasons, the enabled LED does not go on.
Table 1-1 lists LED colors and indications.
| LED Label | Color | State | Meaning |
ENABLED | Green | On | Port adapter is enabled for operation. |
Green | On | DTE---Transmit data out. DCE---Transmit data in. | |
TC | Green | On | DTE---Transmit clock in. DCE---Transmit clock in (TXCE). |
RD | Green | On | DTE---Receive data in. DCE---Receive data out. |
RC | Green | On | DTE---Receive clock in. DCE---Receive clock out. |
LB/CD | Green | On | Indicates DTR, DSR, RTS, CTS, or DCD is active. |
Green | Flashing | Indicates RTS, CTS, or DCD is sending and receiving data in half-duplex mode. | |
Yellow | On | Indicates local loop or internal loop active. |
This section provides information about the HSSI cables you should use with the PA-2H. Two types of cables are available for use with the PA-2H: the HSSI interface cable used to connect your router to an external DSU (and HSSI network), and a null modem cable with which you can connect two routers back to back. Both HSSI cables are available only from Cisco systems and conform to EIA/TIA-612 and EIA/TIA-613 specifications.
The HSSI cable (CAB-HSI1=) connects the PA-2H with the external DSU. The HSSI cable is 10 feet (3.048 meters) long. The maximum HSSI cable length allowed is 50 feet (15.24 meters). Figure 1-4 shows the HSSI cable and the 50-pin connector used at each end of the HSSI cable. For connection instructions, see "Removing and Installing Port Adapters." Table 1-2 lists the pinouts.
| Signal Name | + Side Pin No. | - Side Pin No. | Direction1 Router DSU |
|---|---|---|---|
SG (signal ground) | 1 | 26 | --- |
RT (receive timing) | 2 | 27 | <--- |
CA (DCE available) | 3 | 28 | <--- |
RD (receive data reserved) | 4 | 29 | <--- |
LC (loopback circuit C) | 5 | 30 | <--- |
ST (send timing) | 6 | 31 | <--- |
SG (signal ground) | 7 | 32 | --- |
TA (DTE available) | 8 | 33 | ---> |
TT (terminal timing) | 9 | 34 | ---> |
LA (loopback circuit A) | 10 | 35 | ---> |
SD (send data) | 11 | 36 | ---> |
LB (loopback circuit B) | 12 | 37 | --- |
SG (signal ground) | 13 | 38 | ---> |
5 (ancillary to DCE) | 14-18 | 39-43 | --- |
SG (signal ground) | 19 | 44 | <--- |
5 (ancillary from DCE) | 20-24 | 45-49 | --- |
SG (signal ground) | 25 | 50 | --- |
| 1Router is + side (DTE). DSU is - side (DCE). |
The null modem cable (CAB-HNUL=) can connect two routers directly back to back. The null modem cable is 10 feet (3.048 meters) long. Figure 1-5 shows the null modem cable. The maximum null modem cable length allowed is 50 feet (15.24 meters). The two routers must be in the same location and can be two Cisco 7000 series routers, two Cisco 7100 series routers, two Cisco 7500 series routers, two Cisco 7200 series routers, two Cisco uBR7200 series routers, or any combination of each. With null modem connection, you can verify the operation of the HSSI or link the routers directly in order to build a larger node.
The null modem cable uses the same 50-pin connectors as the HSSI cable, but uses the pinouts listed in Table 1-2. For connection instructions, see "Removing and Installing Port Adapters."
| Signal Name | From Pins | Direction | To Pins | Signal Name |
|---|---|---|---|---|
RT (receive timing) | 2, 27 | ---> | 9, 34 | TT (terminal timing) |
CA (DCE available) | 3, 28 | ---> | 8, 33 | TA (DTE available) |
RD (receive data) | 4, 29 | ---> | 11, 36 | SD (send data) |
LC (loopback C) | 5, 30 | ---> | 10, 35 | LA (loopback A) |
ST (send timing) | 6, 31 | ---> | 6, 31 | ST (send timing) |
TA (DTE available) | 8, 33 | ---> | 3, 28 | CA (DCE available) |
TT (terminal timing) | 9, 34 | ---> | 2, 27 | RT (receive timing) |
LA (loopback A) | 10, 35 | ---> | 5, 30 | LC (loopback C) |
SD (send data) | 11, 36 | ---> | 4, 29 | RD (receive data) |
GND (ground) | 1, 26, | --- | 1, 26, | GND (ground) |
Loopback (not connected) | 12, 37 | --- |
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| 12, 37 | Loopback (not connected) |
Not used | 14-18, 20-24, 39-43, 45-49 |
| 14-18, 20-24, 39-43, 45-49 | Not used |
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Caution Although the HSSI connector and the HSSI cable are similar to SCSI-II format, they are not identical. The HSSI cable specification is more restrictive than that for the SCSI-II. If a SCSI-II cable is used instead of an HSSI cable, proper operation cannot be guaranteed. |
This section discusses port adapter slot locations on the supported platforms. The illustrations that follow summarize slot location conventions on each platform.
The Catalyst RSM/VIP2 can be installed in any slot except the top slots, which contain the supervisor engine modules. The Catalyst RSM/VIP2 in a Catalyst 5000 family switch does not use interface processor slot numbering; therefore, slots are not numbered in Figure 1-6. The PA-2H can be installed into either port adapter slot 0 or slot 1 on a Catalyst RSM/VIP2. Figure 1-6 shows a Catalyst RSM/VIP2 with two port adapters installed.
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Note The Catalyst 5500 switch has 13 slots. Slot 1 is reserved for the supervisor engine module. If a redundant supervisor engine module is used, it would go ins lot 2; otherwise, slot 2 can be used for other modules. Slot 13 is a dedicated slot, reserved for the ATM Switch Processor (ASP) module. Refer to the Catalyst 5000 Series Route Switch Module Installation and Configuration Note for any additional slot restrictions for the Catalyst RSM/VIP2. |
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Note For additional information, see the "VIP2 and VIP4 Slot Numbering" section. |
The PA-H can be installed in port adapter slot 3 in Cisco 7120 series routers, and in port adapter slot 4 in Cisco 7140 series routers. Figure 1-7 shows a Cisco 7120 with a port adapter installed in slot 3. Figure 1-8 shows a Cisco 7140 with a port adapter installed in slot 4.
Figure 1-9 shows a Cisco 7206 with port adapters installed. In the Cisco 7206 (including the Cisco 7206 and Cisco 7206VXR as router shelves in a Cisco AS5800 Universal Access Server), port adapter slot 1 is in the lower left position, and port adapter slot 6 is in the upper right position. (The Cisco 7204 and Cisco 7204VXR are not shown; however, the PA-2H can be installed in any available port adapter slot.)
Figure 1-10 shows the slot numbering of port adapters in a Cisco uBR7200 series router. The port adapter slots are numbered slot 1 and slot 2 for the Cisco uBR7246 and Cisco uBR7246 VXR and slot 1 for the Cisco uBR7223. (Slot 0 is always reserved for the Fast Ethernet port on the I/O controller---if present.)
Figure 1-11 shows a partial view of a VIP motherboard with installed port adapters. With the motherboard oriented as shown in Figure 1-11, the left port adapter is in port adapter slot 0, and the right port adapter is in port adapter slot 1. The slot numbering is the same for the Catalyst RSM/VIP2. The slots are always numbered 0 and 1.
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Note In the Cisco 7000, Cisco 7507, Cisco 7513, and Cisco 7576 chassis, the VIP motherboard is installed vertically. In the Cisco 7010 and Cisco 7505 chassis, the VIP motherboard is installed horizontally. |
Figure 1-12 shows a VIP2 or VIP4 installed in an interface processor slot of a Cisco 7505 router.
This section describes how to identify interface addresses for the PA-2H in supported platforms. Interface addresses specify the actual physical location of each interface on a router or switch.
Interfaces on the PA-2H installed in a router or switch maintain the same address regardless of whether other port adapters are installed or removed. However, when you move a port adapter to a different slot, the first number in the interface address changes to reflect the new port adapter slot number.
Interfaces on a PA-2H installed in a VIP2 or VIP4 maintain the same address regardless of whether other interface processors are installed or removed. However, when you move a VIP2 or VIP4 to a different slot, the interface processor slot number changes to reflect the new interface processor slot.
Table 1-4 explains how to identify interface addresses.
| Platform | Interface Address Format | Numbers | Syntax |
|---|---|---|---|
Catalyst RSM/VIP2 in | Port-adapter-slot-number/interface-port-number | Port adapter slot---always 0 or 1 Interface port---0 and 1 | 0/1 |
Cisco 7120 series routers | Port-adapter-slot-number/interface-port-number
| Port adapter slot---always 3 Interface port---0 and 1 | 3/1 |
Cisco 7140 series routers | Port-adapter-slot-number/interface-port-number
| Port adapter slot---always 4 Interface port---0 and 1 | 4/0 |
Cisco 7200 series routers | Port-adapter-slot-number/interface-port-number | Port adapter slot---0 through 6 (depends on the number of slots in the router)1 Interface port---0 and 1 | 1/0 |
Cisco uBR7223 router | Port-adapter-slot-number/interface-port-number | Port adapter slot---always 11 Interface port---0 and 1 | 1/0 |
Cisco uBR7246 and Cisco uBR7246 VXR routers | Port-adapter-slot-number/interface-port-number | Port adapter slot---always 1 or 21 Interface port---0 and 1 | 1/2 |
VIP2 or VIP4 in Cisco 7000 series or Cisco 7500 series routers | Interface-processor-slot-number/ port-adapter-slot-number/interface-port-number | Interface processor slot---0 through 12 (depends on the number of slots in the router) Port adapter slot---always 0 or 1 Interface port---0 and 1 | 3/1/0 |
| 1Port adapter slot 0 is reserved for the Fast Ethernet port on the I/O controller (if present). |
This section describes how to identify the interface addresses used for the PA-2H on the Catalyst RSM/VIP2 in Catalyst 5000 family switches. The interface address is composed of a two-part number in the format port-adapter-slot-number/interface-port number.
See Table 1-4 for the interface address format.
This section describes how to identify the interface addresses used for the PA-2H in Cisco 7100 series routers. The interface address is composed of a two-part number in the format port-adapter-slot-number/interface-port-number. See Table 1-4 for the interface address format.
This section describes how to identify the interface addresses used for the PA-2H in Cisco 7200 series routers or Cisco uBR700 series routers. The interface address is composed of a two-part number in the format port-adapter-slot-number/interface-port-number. See Table 1-4 for the interface address format.
In Cisco 7200 series routers, port adapter slots are numbered from the lower left to the upper right, beginning with port adapter slot 1 and continuing through port adapter slot 2 for the Cisco 7202, slot 4 for the Cisco 7204 and Cisco 7204VXR, and slot 6 for the Cisco 7206 and Cisco 7206VXR. (Port adapter slot 0 is reserved for the optional Fast Ethernet port on the I/O controller---if present.)
The interface addresses of the interfaces on the PA-2H in port adapter slot 1 are
1/0 and 1/1 (port adapter slot 1 and interfaces 0 and 2). If the PA-2H was in port adapter slot 4, these same interfaces would be numbered 4/0 and 4/1 (port adapter slot 4 and interfaces 0 and 1).
In Cisco uBR7200 series routers, port adapter slots are numbered slot 1 and slot 2 for the Cisco uBR7246 and Cisco uBR7246 VXR and slot 1 for the Cisco uBR7223. (Slot 0 is always reserved for the Fast Ethernet port on the I/O controller---if present.) The individual interfaces always begin with 0. The number of additional interfaces depends on the number of interface ports on a port adapter.
The interface addresses of the interfaces on a PA-2H in port adapter slot 2 of a Cisco uBR7246 or Cisco uBR7246 VXR are 2/0 and 2/1 (port adapter slot 2 and interfaces 0 and 1). If the PA-2H was in port adapter slot 1, these same interfaces would be numbered 1/0 and 1/1 (port adapter slot 1 and interfaces 0 and 1).
This section describes how to identify the interface addresses used for the PA-2H on a VIP2 or a VIP4 in Cisco 7000 series and Cisco 7500 series routers.
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Note Although the processor slots in the 7-slot Cisco 7000 and Cisco 7507 and 13-slot Cisco 7513 and Cisco 7576 are vertically oriented and those in the 5-slot Cisco 7010 and Cisco 7505 are horizontally oriented, all Cisco 7000 series and Cisco 7500 series routers use the same method for slot and port numbering. |
See Table 1-4 for the interface address format. The interface address is composed of a three-part number in the format interface-processor-slot-number/port-adapter-slot-number/interface-port-number.
If the VIP2 or VIP4 is inserted in interface processor slot 3, then the interface addresses of the PA-2H are 3/1/0 and 3/1/1 (interface processor slot 3, port adapter slot 1, and interfaces 0 and 1). If the PA-2H was in port adapter slot 0 on the VIP2 or VIP4, these same interface addresses would be numbered 3/0/0 and 3/0/1.
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Note If you remove the VIP2 or VIP4 with the PA-2H from interface processor slot 3 and install it in interface processor slot 2, the interface addresses become 2/1/0 and 2/1/1. |
Posted: Thu Apr 27 20:54:33 PDT 2000
Copyright 1989 - 2000©Cisco Systems Inc.
