PA-MC-E3 Multi-Channel E3 Port Adapter Installation and Configuration

Overview

This chapter describes the PA-MC-E3 multi-channel E3 port adapter. This chapter contains the following sections:

•Port Adapter Overview

•Configuration Options

•PA-MC-E3 LEDs

•Cables, Connectors, and Pinouts

•Port Adapter Slot Locations on the Supported Platforms

•Identifying Interface Addresses

Port Adapter Overview

The PA-MC-E3 provides one multi-channel E3, medium-speed serial interface. (See Figure 1-1.)

Figure 1-1 PA-MC-E3 Port Adapter—Faceplate View

The physical E3 link on the PA-MC-E3 port adapter consists of two female BNC connectors, one for receive (RX) and one for transmit (TX). You must use 75-ohm coaxial interface cables with male BNC connectors to connect the PA-MC-E3 interface with external E3 equipment. (For cable information, refer to the "Cables, Connectors, and Pinouts" section.)

The PA-MC-E3 divides the E3 signal stream into four multi-channel E2 data channels and then into 16 E1 lines. The E3 is designed to comply with the CCITT/ITU G.703 physical layer standard. E3 provides access to services at E3 (34.368 Mbps) data rates, transferring data bidirectionally. (The actual data rate depends on your configuration of the E1 lines.)

The PA-MC-E3 is also designed to comply with CCITT/ITU G.751 for E3, G.742 for E2, and G.704 and G.706 for E1 fault and alarm detection and response actions. Aggregation of multiple E1 lines for higher speed, called inverse multiplexing or bonding, is not supported in hardware, however Cisco IOS software supports features such as CEF and MLPPP that allow users to achieve equivalent functionality.

In addition to fault and alarm detection, the PA-MC-E3 provides SNMP support for status monitoring and statistics reporting. (The SNMP support includes RFC 1406 for E1 and RFC 1407 for E3.) The E3 signal stream uses HDB3 line code. The E3 physical layer alarms are processed and responded to according to CCITT/ITU G.751. (This is also true for E1 lines.) You can configure the source of the transmit clock to be either from an internal oscillator or recovered from the received E1 and E3 signals.

Caution To prevent potential system problems related to setting a clock source, we strongly recommend that you refer to the "Software and Hardware Requirements" section on page 2-2.

Configuration Options

The 16 E1 lines (1-16) have the following four configuration options:

•Channelized E1—Any of the 16 E1 lines can be configured as channelized E1 lines, but you are limited to a total of 128 logical channels. You can group the time slots in these E1 lines into several individual logical channel groups, each of which carries data with different data link layer protocol encapsulations. You can configure timeslot 16 as a data channel, although it is typically used for common channel signaling. (Channel associated signaling (CAS) for voice channels and E1 Facilities Data Link [FDL] on timeslot 16 are not supported.)

Each logical channel group can be composed of individual 64-kbps timeslots and/or ranges of timeslots, for example, 1,9,12-14. Each logical channel group can contain from 1-31 timeslots maximum; the same timeslot cannot be used in more than one logical channel group. Any unused timeslots are filled with programmable idle-channel data.

•PRI ISDN E1—Any of the E1 lines can be configured to support the PRI ISDN application. You assign a PRI group to the E1 line. Each PRI group can contain from 1-31 timeslots maximum. It is not necessary to allocate all 30 timeslots for the ISDN application. Timeslot 16 is used for common channel signaling. Any unused timeslot are filled with programmable idle-channel data.

•Fractional E1—Any of the 16 E1 lines can be configured as fractional E1 lines, each of which can be either E1 frames or E1 cyclic redundancy check (CRC) multiframes, as specified by CCITT/ITU G.704 and G.706. A fractional E1 line is a subset of the full E1 bandwidth, which uses n x 64 kbps; where n is a timeslot in the range of 1-31.

Fractional E1 lines contain only a single logical channel group that can be either a single 64-kbps timeslot or a range of timeslots; for example timeslot 1, or timeslots 15-23. Any unused timeslots are filled with programmable idle-channel data.

Note If you assign only one channel group to an E1 line, it is a fractional E1 line.
If you assign more than one channel group to an E1 line, it is a channelized E1 line.

•Unframed E1—Any of the 16 E1 lines can be configured as unframed E1 data lines. Each unframed E1 line contains no framing overhead and is not timeslot divided.

Example configurations would include the following:

1. A maximum of 16 channelized E1 lines.

2. A maximum of 16 PRI ISDN E1 lines. Not all the PRI will support 30 B-channels. See the following note for details.

3. A maximum of 16 fractional E1 lines.

4. A maximum of 16 unframed E1 lines.

5. Combinations of 1 through 4.

Note For PRI ISDN configurations, each timeslot you assign to a PRI group for a configured E1 line, including each timeslot within a range of timeslots, uses one of the 128 available logical channels. For example, if you assign the range of timeslots 1-31 to a PRI group, then 31 logical channels are used (30 B-channels plus the D-channel), whereas if you assign just 1-15 to a PRI group, only 16 timeslots are used.

For channelized, fractional, and unframed configurations each configured channel group, which might contain individual timeslots and/or ranges of timeslots, uses only one of the 128 available logical channels. For example, if you assign the range of timeslots 3-7 to a channel group, only one logical channel is used. Likewise, if you assign just timeslot 3 to a channel group, only one logical channel is used.

The channelized E1 portion of the port adapter contains onboard E1 bit error rate test (BERT) circuitry. With this, the port adapter software can send and detect a programmable pattern that is compliant with CCITT/ITU O.151, O.152, and O.153 pseudo-random and repetitive test patterns. The BER test functionality is configurable to any of the E1 lines. (For specific BER testing configuration information, see the "Configuring a BERT on an E1 Line" section.)

Note Onboard E3 BER testing is not supported.

PA-MC-E3 LEDs

The PA-MC-E3 has five status LEDs and one ENABLED LED. See Figure 1-2.

Figure 1-2 PA-MC-E3 LEDs—Partial Horizontal View

After system initialization, the green enable LED goes on to indicate that the port adapter has been enabled for operation.

The following conditions must be met before the PA-MC-E3 is enabled:

•The PA-MC-E3 is correctly connected to and receiving power from one of the following:

–The VIP motherboard in a Cisco 7000 series router or Cisco 7500 series router

–The Catalyst 6000 family FlexWAN module in a Catalyst 6000 family switch

–The Catalyst RSM/VIP2 motherboard in a Catalyst 5000 family switch

–Cisco 7304 PCI Port Adapter Carrier Card in a 7304 router

–The midplane in a Cisco 7200 series router, Cisco 7200 VXR router, Cisco uBR7200 series router, Cisco 7201 router, or Cisco 7301 router

•The bus recognizes the PA-MC-E3-equipped VIP, Catalyst RSM/VIP2, Catalyst 6000 family FlexWAN module, Cisco 7304 PCI Port Adapter Carrier Card, or the PA-MC-E3 in a Cisco 7200 series router, Cisco 7200 VXR router, Cisco uBR7200 series router, Cisco 7201 router, or Cisco 7301 router.

If either one of the preceding conditions is not met, or if the initialization fails for other reasons, the enable LED does not go on.

Table 1-1 lists LED colors and indications.

Note In addition to the interface status information provided by the LEDs, you can also retrieve detailed interface status information through either the router's console port or via Simple Network Management Protocol (SNMP).

Cables, Connectors, and Pinouts

The interface connectors on the PA-MC-E3 are coaxial BNC types, with one connector and cable for transmit (TX) and one for receive (RX). The BNC connectors are transformer coupled to the PA-MC-E3 line interface unit (LIU), which is the analog physical interface on the PA-MC-E3.

The pinout and signal descriptions for the BNC connectors on the PA-MC-E3 are as follows:

•Transmit (TX)—Transmitted signals appear on the center contact and the outer shield is ground for the 75-ohm coaxial cable you attach to the TX BNC connector.

•Receive (RX)—Received signals appear on the center contact, and the outer shield is ground, for the 75-ohm coaxial cable you attach to the RX BNC connector. The PA-MC-E3 contains an internal strapping option that you can remove if you require isolation between the receive connection outer shield and ground.

Caution To prevent problems, you must check your 75-ohm coaxial cable specifications when long cable lengths are required to connect the PA-MC-E3 to your external E3 equipment. Your coaxial cable's loss must be less than 12 dB at 17.184 MHz, when using maximum cable lengths. Ideally, the maximum cable length for unbalanced, 75-ohm coaxial cable is 1,300 feet (396.2 meters).

You must install a ferrite sleeve (also called a common-mode choke) on each 75-ohm coaxial cable to reduce the effects of electromagnetic interference (EMI). (Cisco Systems supplies two ferrite sleeves with the PA-MC-E3; one ferrite sleeve for each of the two 75-ohm coaxial cables you must attach to the PA-MC-E3.)

Note Attach the ferrite sleeve on the end of each coaxial cable, nearest the PA-MC-E3, as close to the BNC connector as possible. (See Figure 1-3.)

Caution The ferrite sleeve prevents electromagnetic interference (EMI) from affecting the E3-equipped system and is a required component for proper system operation.

Figure 1-3 Attaching the Ferrite Sleeve around a Coaxial Cable

Figure 1-4 shows the typical 75-ohm coaxial cable pair that you supply and should use with the PA-MC-E3. Use only this type of coaxial cable pair for PA-MC-E3 connections. Use one 75-ohm, RG-59 coaxial cable for each PA-MC-E3 connection: RX and TX.

Figure 1-4 75-Ohm, RG-59 Coaxial Cable Pair with Ferrite Sleeves Attached

Note We strongly recommend that you fasten together your transmit and receive cables along their entire length, as shown in Figure 1-4. Doing so reduces the effects of EMI. You can use standard heat-activated shrink tubing or cable ties for this purpose.

You can also order from Cisco Systems a 75-ohm coaxial cable pair with ferrite beads attached (as Cisco Product Number CAB-ATM-DS3/E3—see Figure 1-5). This 75-ohm coaxial cable pair is not available from outside commercial cable vendors.

Figure 1-5 CAB-ATM-DS3/E3 Cable—75-Ohm, RG-59 Coaxial Cable with BNC Connectors

Port Adapter Slot Locations on the Supported Platforms

This section discusses port adapter slot locations on the supported platforms. The illustrations that follow summarize slot location conventions on each platform:

•Catalyst RSM/VIP2 Slot Numbering

•Catalyst 6000 Family FlexWAN Module Slot Numbering

•Cisco 7100 Series Routers Slot Numbering

•Cisco 7200 Series Routers and Cisco 7200 VXR Routers Slot Numbering

•Cisco uBR7200 Series Router Slot Numbering

•Cisco 7201 Router Slot Numbering

•Cisco 7301 Router Slot Numbering

•Cisco 7304 PCI Port Adapter Carrier Card Slot Numbering

•Cisco 7000 Series Routers and Cisco 7500 Series Routers VIP Slot Numbering

Catalyst RSM/VIP2 Slot Numbering

The Catalyst RSM/VIP2 can be installed in any slot in a Catalyst 5000 family switch except the top slots, which contain the supervisor engine modules. The Catalyst RSM/VIP2 does not use interface processor slot numbering; therefore, the slots in which it is installed are not numbered. Port adapters 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.

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 in slot 2; otherwise, slot 2 can be used for other modules. Slot 13 is a dedicated slot, reserved for the ATM Switch Processor module. Refer to the Catalyst 5000 Series Route Switch Module Installation and Configuration Note for any additional slot restrictions for the Catalyst RSM/VIP2.

Figure 1-6 Catalyst 5000 Family Switch with Port Adapters Installed on Catalyst RSM/VIP2

Catalyst 6000 Family FlexWAN Module Slot Numbering

The Catalyst 6000 family FlexWAN module can be installed in any slot in a Catalyst 6000 family switch except slot 1, which is reserved for the supervisor engine. Port adapters can be installed into either port adapter bay 0 or bay 1 on a FlexWAN module. Figure 1-7 shows a FlexWAN module with two blank port adapters installed.

Note Slot 1 is reserved for the supervisor engine. If a redundant supervisor engine is used, it would go in slot 2; otherwise, slot 2 can be used for other modules.

Figure 1-7 Catalyst 6000 Family Switch with Port Adapters Installed on FlexWAN Module

Cisco 7100 Series Routers Slot Numbering

Port adapters 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 1-8 shows the slot numbering on a Cisco 7120 series router. Figure 1-9 shows the slot numbering on a Cisco 7140 series router.

Figure 1-8 Port Adapter Slots in the Cisco 7120 Series Router

Figure 1-9 Port Adapter Slots in the Cisco 7140 Series Router

Cisco 7200 Series Routers and Cisco 7200 VXR Routers Slot Numbering

Cisco 7202 routers have two port adapter slots. The slots are numbered from left to right. You can place a port adapter in either of the slots (slot 1 or slot 2). The Cisco 7202 router is not shown.

Cisco 7204 routers and Cisco 7204VXR routers have four slots for port adapters, and one slot for an input/output (I/O) controller. The slots are numbered from the lower left to the upper right, beginning with slot 1 and continuing through slot 4. You can place a port adapter in any of the slots (slot 1 through slot 4). Slot 0 is always reserved for the I/O controller. The Cisco 7204 router and Cisco 7204VXR are not shown

Cisco 7206 routers and Cisco 7206VXR routers (including the Cisco 7206 and Cisco 7206VXR routers as router shelves in a Cisco AS5800 Universal Access Server) have six slots for port adapters, and one slot for an input/output (I/O) controller. The slots are numbered from the lower left to the upper right, beginning with slot 1 and continuing through slot 6. You can place a port adapter in any of the six slots (slot 1 through slot 6). Slot 0 is always reserved for the I/O controller. Figure 1-10 shows the slot numbering on a Cisco 7206 router. The Cisco 7206VXR router is not shown.

Figure 1-10 Port Adapter Slots in the Cisco 7206 Router

Cisco uBR7200 Series Router Slot Numbering

The Cisco uBR7223 router has one port adapter slot (slot 1). Slot 0 is always reserved for the I/O controller—if present. The Cisco uBR7223 router is not shown.

The Cisco uBR7246 router and Cisco uBR7246VXR router have two port adapter slots (slot1 and slot 2). Slot 0 is always reserved for the I/O controller—if present. Figure 1-11 shows the slot numbering of port adapters on a Cisco uBR7246 router or Cisco uBR7246VXR router.

Figure 1-11 Port Adapter Slots in the Cisco uBR7246 and Cisco uBR7246VXR Routers

Cisco 7201 Router Slot Numbering

Figure 1-12 shows the front view of a Cisco 7201 router with a port adapter installed. There is only one port adapter slot (slot 1) in a Cisco 7201 router.

Figure 1-12 Port Adapter Slot in the Cisco 7201 Router

Cisco 7301 Router Slot Numbering

Figure 1-13 shows the front view of a Cisco 7301 router with a port adapter installed. There is only one port adapter slot (slot 1) in a Cisco 7301 router.

Figure 1-13 Port Adapter Slot in the Cisco 7301 Router

Cisco 7304 PCI Port Adapter Carrier Card Slot Numbering

The Cisco 7304 PCI port adapter carrier card installs into Cisco 7304 router module slots 2 through 5. Figure 1-14 shows a Cisco 7304 PCI port adapter carrier card with a port adapter installed. The Cisco 7304 PCI port adapter carrier card accepts one single-width port adapter. Figure 1-15 shows the module slot numbering on a Cisco 7304 router. The port adapter slot number is the same as the module slot number. Slot 0 and slot 1 are reserved for the NPE module or NSE module.

Figure 1-14 Cisco 7304 PCI Port Adapter Carrier Card—Port Adapter Installed

Figure 1-15 Module Slots on the Cisco 7304 Router

Cisco 7000 Series Routers and Cisco 7500 Series Routers VIP Slot Numbering

Port adapters are supported on the VIPs (versatile interface processors) used in Cisco 7000 series and Cisco 7500 series routers. In the Cisco 7010 router and Cisco 7505 router, the VIP motherboard is installed horizontally in the VIP slot. In the Cisco 7507 router and Cisco 7513 router, the VIP motherboard is installed vertically in the VIP slot. The port adapter can be installed in either bay (port adapter slot 0 or 1) on the VIP. The bays are numbered from left to right on the VIP. Figure 1-16. shows the slot numbering on a VIP.

Figure 1-16 VIP Slot Locations

Cisco 7010 routers have three slots for port adapters, and two slots for Route Switch Processors (RSPs). The slots are numbered from bottom to top. You can place the port adapter in any of the VIP interface slots (slot 0 through 2). Slots 3 and 4 are always reserved for RSPs. The Cisco 7010 router is not shown.

Cisco 7505 routers have four slots for port adapters, and one slot for an RSP. The slots are numbered from bottom to top. You can place the port adapter in any of the VIP interface slots (slot 0 through 3). One slot is always reserved for the RSP. Figure 1-17 shows the slot numbering on a Cisco 7505 router.

Figure 1-17 VIP Slots in the Cisco 7505 Router

Cisco 7507 routers have five slots for port adapters, and two slots for RSPs. The slots are numbered from left to right. You can place the port adapters in any of the VIP interface slots (slot 0, 1, 4, 5, or 6). Slots 2 and 3 are always reserved for RSPs. The Cisco 7507 router is not shown.

Cisco 7513 routers have eleven slots for port adapters, and two slots for RSPs. The slots are numbered from left to right. You can place the port adapter in any of the VIP interface slots (slots 0 through 5, or slots 9 through 12). Slots 6 and 7 are always reserved for RSPs. The Cisco 7513 router is not shown.

Identifying Interface Addresses

This section describes how to identify interface addresses for the PA-MC-E3 in supported platforms. Interface addresses specify the actual physical location of each interface on a router or switch.

Interfaces on a PA-MC-E3 installed in a router 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-MC-E3 installed in a VIP or FlexWAN module maintain the same address regardless of whether other interface processors or modules are installed or removed. However, when you move a VIP or FlexWAN module to a different slot, the interface processor or module slot number changes to reflect the new interface processor or module slot.

Note Interface ports are numbered from left to right starting with 0.

The following subsections describe the interface address formats for the supported platforms:

•Catalyst RSM/VIP2 Interface Addresses

•Catalyst 6000 Family FlexWAN Module Interface Addresses

•Cisco 7200 Series Routers and Cisco 7200 VXR Routers Interface Addresses

•Cisco uBR7200 Series Routers Interface Addresses

•Cisco 7201 Router Interface Addresses

•Cisco 7301 Router Interface Addresses

•Cisco 7304 PCI Port Adapter Carrier Card Interface Addresses

•Cisco 7000 Series Routers and Cisco 7500 Series Routers VIP Interface Addresses

Table 1-2 summarizes the interface address formats for the supported platforms.

.

0/0

3/0/0

1/0

1/0

1/0

1/0

1/0

3/0

3/1/0

Catalyst RSM/VIP2 Interface Addresses

In Catalyst 5000 family switches, 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, the slots in which it is installed are not numbered. A port adapter can be installed into either port adapter slot 0 or slot 1 on a Catalyst RSM/VIP2. See Figure 1-6.

The interface address is composed of a two-part number in the format port-adapter-slot number/interface-port number. See Table 1-2. For example, if a single-port PA-MC-E3 is installed in port adapter slot 1 of a Catalyst RSM/VIP2 in a Catalyst 5000 family switch, the interface address would be 1/0.

Catalyst 6000 Family FlexWAN Module Interface Addresses

In Catalyst 6000 family switches, the Catalyst 6000 family FlexWAN module can be installed in module slots 2 through 13 (depending on the number of slots in the router). Slot 1 is reserved for the supervisor engine. A port adapter can be installed into either port adapter bay 0 or bay 1 on a FlexWAN module. See Figure 1-7.

The interface address is composed of a three-part number in the format module-number/port-adapter-bay-number/interface-port-number. See Table 1-2.

The first number identifies the module slot of the chassis in which the FlexWAN module is installed (slot 2 through slot 3, 6, 9, or 13 depending on the number of slots in the chassis). These module slots are generally numbered from top to bottom, starting with 1.

The second number identifies the bay of the FlexWAN module in which the port adapter is installed (0 or 1). The bays are numbered from left to right on the FlexWAN module.

The third number identifies the physical port number on the port adapter. The PA-MC-E3 port adapter is a single-port port adapter, therefore the port is always 0.

For example, if the FlexWAN module is inserted in module slot 3, then the interface address of the port adapter is 3/0/0 (module slot 3, port adapter bay 0, and interface 0). If the port adapter is in port adapter bay 1 on the FlexWAN module, this same interface address would be numbered 3/1/0. If you remove the FlexWAN module with the port adapter from module slot 3 and install it in module slot 6, the interface address becomes 6/0/0.

Note The FlexWAN module physical port address uses a zero- (0-) based port address, which differs from the conventional Catalyst 6000 family one- (1-) based port address.

Cisco 7200 Series Routers and Cisco 7200 VXR Routers Interface Addresses

In Cisco 7200 series routers and Cisco 7200 VXR routers, port adapter slots are numbered from the lower left to the upper right, beginning with slot 1 and continuing through 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. A port adapter can be installed in any available port adapter slot from 1 through 6 (depending on the number of slots in the router). (Slot 0 is reserved for the I/O controller.) See Figure 1-10.

The interface address is composed of a two-part number in the format port-adapter-slot-number/interface-port-number. See Table 1-2. For example, if a single-port PA-MC-E3 is installed in slot 1of a Cisco 7200 series router, the interface address would be 1/0. If a single-port PA-MC-E3 is installed in slot 4, the interface address would be 4/0.

Cisco uBR7200 Series Routers Interface Addresses

In the Cisco uBR7223 router, only one slot accepts port adapters and it is numbered slot 1.

In the Cisco uBR7246 router and Cisco uBR7246VXR router, port adapters can be installed in two port adapter slots (slot1 and slot 2). Slot 0 is always reserved for the I/O controller—if present. See Figure 1-11.

The interface address is composed of a two-part number in the format port-adapter-slot-number/interface-port-number. See Table 1-2. For example, if a single-port port adapter is installed in slot 1of a Cisco uBR7223 series router, the interface addresses would be 1/0. If the single-port port adapter were installed in slot 2 of a Cisco uBR7246 or Cisco uBR7248VXR router, the interface addresses would be 2/0.

Cisco 7201 Router Interface Addresses

In the Cisco 7201 router, only one slot accepts port adapters and it is numbered as slot 1. See Figure 1-12.

The interface address is composed of a two-part number in the format port-adapter-slot-number/interface-port-number. See Table 1-2. For example, if a single-port PA-MC-E3 is installed in a Cisco 7201 router, the interface address would be 1/0.

Cisco 7301 Router Interface Addresses

In the Cisco 7301 router, only one slot accepts port adapters and it is numbered as slot 1. See Figure 1-13.

The interface address is composed of a two-part number in the format port-adapter-slot-number/interface-port-number. See Table 1-2. For example, if a single-port PA-MC-E3 is installed in a Cisco 7301 router, the interface address would be 1/0.

Cisco 7304 PCI Port Adapter Carrier Card Interface Addresses

In the Cisco 7304 router, port adapters are installed in a Cisco 7304 PCI port adapter carrier card, which installs in Cisco 7304 router module slots 2 through 5. The port adapter slot number is the same as the module slot number. See Figure 1-15.

The interface address is composed of a two-part number in the format module-slot-number/interface-port-number. See Table 1-2. For example, if a single-port PA-MC-E3 is installed in the Cisco 7304 PCI port adapter carrier card in Cisco 7304 router module slot 3, the interface address would be 3/0.

Cisco 7000 Series Routers and Cisco 7500 Series Routers VIP Interface Addresses

In Cisco 7000 series routers and Cisco 7500 series routers, port adapters are installed on a versatile interface processor (VIP), which installs in interface processor slots 0 through 12 (depending on the number of slots in the router). The port adapter can be installed in either bay (port adapter slot 0 or 1) on the VIP. See Figure 1-16, and Figure 1-17.

The interface address for the VIP is composed of a three-part number in the format interface-processor-slot-number/port-adapter-slot-number/interface-port-number. See Table 1-2.

The first number identifies the slot in which the VIP is installed (slot 0 through 12, depending on the number of slots in the router).

The second number identifies the bay (port adapter slot) on the VIP in which the port adapter is installed (0 or 1). The bays are numbered from left to right on the VIP.

The third number identifies the physical port number (interface port number) on the port adapter. The port numbers always begin at 0 and are numbered from left to right. The number of additional ports depends on the number of ports on the port adapter. The PA-MC-E3 port adapter is a single-port port adapter, therefore the port is always 0.

For example, if a single-port PA-MC-E3 is installed in a VIP in interface processor slot 3, port adapter slot 1, the interface addresses would be 3/1/0. If the PA-MC-E3 is in port adapter slot 0 on the VIP, the same interface address would be 3/0/0.

Note Although the processor slots in the seven-slot Cisco 7507 and the thirteen-slot Cisco 7513 chassis are vertically oriented and those in the five-slot Cisco 7010 and Cisco 7505 chassis are horizontally oriented, all Cisco 7500 series routers use the same method for slot and port numbering.