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This chapter describes the PA-MC-2E1 or PA-MC-8E1 port adapter and contains the following sections:
The multichannel E1/PRI port adapters (PA-MC-2E1 and PA-MC-8E) integrate data service unit (DSU) functionality and E1 channel support into the Cisco router.
The PA-MC-2E1 or PA-MC-8E1 port adapter provides two or eight independent E1 (120-ohm) connections via RJ-48C connectors. (See Figure 1-1 and Figure 1-2.) The PA-MC-8E1 port adapter can provide up to 128 separate full-duplex High-Level Data Link Control (HDLC) channelized E1, fractional E1, full E1, or unframed E1 interfaces and the PA-MC-2E1 port adapter can provide up to 62 separate full-duplex HDLC channelized E1, fractional E1, full E1, or unframed E1 interfaces.
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Note The Catalyst RSM/VIP2 supports only the PA-MC-8E1 port adapter. |
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Note Each port adapter has a handle attached, but this handle is occasionally not shown in this publication to allow a full view of detail on the port adapter's face plate. |
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Note The VIP2 and Catalyst RSM/VIP2 support online insertion and removal (OIR), but individual port adapters do not. To replace port adapters, you must first remove the VIP2 or Catalyst RSM/VIP2 and replace port adapters as required. OIR is supported for port adapters in the Cisco 7200 series and Cisco uBR7200 series routers. |
When you are running channelized E1, each E1 interface can provide up to 31 E1 channel groups, which are numbered from 0 to 30. Each channel group provides up to 31 64-kbps time slots (E1 channels), which are numbered 1 to 31. Multiple time slots can be mapped to a single channel group. Each channel group is presented to the system as a serial interface that can be configured individually. Usable bandwidth for each channel group is calculated as n x 56 kbps or n x 64 kbps, where n is a number of E1 channels (1 to 31).
When you are running ISDN PRI, each E1 interface provides 30 bearer (B) channels that can transmit and receive data at the rate of 64 kbps, full-duplex, and one data (D) channel that can transmit and receive data at the rate of 64 kbps, full-duplex. The B channels are used for transmitting user data. The D channel is used for call setup control and network connection teardown, and provides the communication from the router to the ISDN switch. The B and D channels are presented to the system as serial interfaces that support HDLC and Point-to-Point Protocol (PPP) encapsulation. The multichannel E1/PRI port adapter supports dial-on-demand routing (DDR) when you are running ISDN PRI.
Each of the E1 channels on the multichannel E1/PRI port adapter uses a portion of the E1 bandwidth (fractional E1) or the entire E1 bandwidth for data transmission. Usable bandwidth for each E1 is n x 64 or n x 56 kbps, where n is a number from 1 to 31. The unused portion of the E1 bandwidth, when you are not running at full E1 speeds, cannot be used and is filled with idle channel data.
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Note E1 time slots on the PA-MC-2E1 or PA-MC-8E1 port adapter are numbered 1 to 31, rather than following the more traditional zero-based scheme (0 to 30) used with other Cisco products. This is to ensure consistency with telco numbering schemes for E1 channels within channelized equipment. |
The PA-MC-2E1 or PA-MC-8E1 port adapter supports network and payload loopbacks. Bit error rate (BER) testing is supported on each of the E1 links. The bit error rate tester (BERT) can be run only on one port at a time.
The PA-MC-2E1 or PA-MC-8E1 port adapter supports the aggregation of multiple E1s (called inverse multiplexing or bonding) for higher bandwidth data rates. The PA-MC-2E1 or PA-MC-8E1 port adapter also supports Cisco HDLC, Frame Relay, PPP, and SMDS Data Exchange Interface (DXI) encapsulations over each E1 link. For SMDS only, DXI is sent on the E1 line, so it needs to connect to an SMDS switch that has direct DXI input.
| Router Platform | Port Adapter | Number of PRI Groups Allowed Per Port Adapter | Maximum Number of Interfaces Per Port Adapter | PRI-Groups Allowable Per Router |
|---|---|---|---|---|
7200 | PA-MC-8E1 | See information and examples below. | 128 | 48 |
7200 VXR | PA-MC-8E1 | See information and examples below. | 128 | 48 |
7500 | PA-MC-8E1 | See information and examples below. | 128 | Both port adapters: 20 with Cisco IOS 11.2 release and Cicso IOS 11.1CA release |
Rules for determining the allowable number of PRI groups per port adapter:
Example 1: Valid configuration. PA-MC-8E1 configured with:
Example 2: Non-valid configuration. PA-MC-8E1 configured with:
The PA-MC-2E1 or PA-MC-8E1 port adapter has the following features:
The E1/PRI line interface unit (LIU) meets the following specifications for input jitter tolerance, pulse shape/amplitude (E1), line termination, and jitter transfer:
The PA-MC-2E1 or PA-MC-8E1 ports receive and transmit at the E1 level while driving and receiving from a 120-ohm unshielded twisted-pair (UTP) cable. This port adapter connects directly to any equipment that has E1 level input/output. The E1/PRI front end meets the following specifications:
| E1/PRI Channel Number | Data Rate |
|---|---|
0 to 30 | n x 56 kbps up to full E1 (2.048 Mbps) |
| 1Or any mixture of n x 56 and n x 64, where n + n < 31 |
The multichannel E1/PRI port adapter contains the enabled LED, standard on all port adapters, and one status LED for each port. After system initialization, the enabled LED goes on, indicating that the multichannel E1/PRI port adapter has been enabled for operation. (See Figure 1-3 and Figure 1-4.) The console screen also displays a message as the system discovers each interface during its reinitialization.
The following conditions must be met before the multichannel E1/PRI port adapter is enabled:
If any of these conditions is not met, or if the initialization fails for other reasons, the enabled LED does not go on.
| LED Label | Color | State | Meaning |
|---|---|---|---|
Enabled | -- | On | PA-MC-2E1 or PA-MC-8E1 is enabled. |
Link LEDs--0-1 for the PA-MC-2E or 0-7 for the PA-MC-8E1 | -- | On | The port is active. |
Verify that the multichannel E1/PRI port adapter is connected correctly using this procedure:
Step 2 When the reinitialization is complete, verify that the enabled LED on the multichannel E1/PRI port adapter is on and remains on. If the LED does stay on, proceed to Step 5. If the enabled LED does not stay on, proceed to the next step.
Step 3 If the enabled LED on the multichannel E1/PRI port adapter fails to go on, suspect that the multichannel E1/PRI port adapter board connector is not fully seated in the backplane. Reinsert the port adapter until the connector is completely mated with the backplane. After the system reinitializes the interfaces, the enabled LED on the multichannel E1/PRI port adapter should go on. If the enabled LED goes on, proceed to Step 5. If the enabled LED does not go on, proceed to the next step.
Step 4 If the enabled LED still fails to go on, remove the multichannel E1/PRI port adapter and try installing it in another available port adapter slot.
Step 5 Use the show interfaces command to verify the status of the multichannel E1/PRI port adapter interfaces. (If the interfaces are not configured, you must use the procedures in the "Configuring the Interfaces" section.)
The E1/PRI interface receptacles on the multichannel E1/PRI port adapter are RJ-48C for E1 (120-ohm). You can use them all simultaneously. Each connection supports E1 (120-ohm) interfaces that meet G.703 standards. The RJ-48C connection does not require an external transceiver. The E1/PRI ports are E1 interfaces that use 120-ohm unshielded twisted pair cables. (See Figure 1-5.)
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Note To meet VCCI Class II EMI requirements, you must use foil twisted pair (FTP) cables. |
Figure 1-5 and Table 1-4 show the multichannel E1/PRI port adapter interface cable, connector, and pinout.
Table 1-4 lists the signal pinouts and descriptions for the RJ-48C connector.
| Pin | Signal1 |
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| 1Tx = transmit. Rx = receive. NC = no connect. |
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-MC-8E1 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 RSM/VIP2 supports only the PA-MC-8E1/120 multichannel E1/PRI port adapter. |
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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 in slot 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. |
Figure 1-7 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 7202 and Cisco 7204 are not shown; however, the PA-MC-2E1 and the PA-MC-8E1 can be installed in any available port adapter slot.)
Figure 1-8 shows the slot numbering of port adapters in a Cisco uBR7246 and Cisco uBR7246VXR router. The port adapter slots are numbered slot 1 and slot 2 for the Cisco uBR7246 and Cisco uBR7246VXR router and slot 1 for the Cisco uBR7223. (Slot 0 is always reserved for the Fast Ethernet port on the I/O controller--if present.)
uBR7246VXR
Figure 1-9 shows a partial view of a VIP motherboard with installed port adapters. With the motherboard oriented as shown in Figure 1-9, 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, and Cisco 7513 chassis, the VIP motherboard is installed vertically. In the Cisco 7010 and Cisco 7505 chassis, the VIP motherboard is installed horizontally. |
Interface processor slots are numbered as shown in Figure 1-10.
This section describes how to identify interface addresses for the PA-MC-2E1 or PA-MC-8E1 in supported platforms. Interface addresses specify the actual physical location of each interface on a router or switch.
Interfaces on the PA-MC-2E1 and PA-MC-8E1 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-2E1 and PA-MC-8E1 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.
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Note E1 time slots on the PA-MC-2E1 and PA-MC-8E1 port adapter are numbered 1 to 31, rather than following the more traditional zero-based scheme (0 to 30) used with other Cisco products. This is to ensure consistency with telco numbering schemes for E1 channels within channelized E1 equipment. |
Table 1-5 explains how to identify interface addresses.
| Platform | Interface Address Format | Numbers | Syntax |
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Catalyst RSM/VIP2 in | Port-adapter-slot-number/interface-port-number: | Port adapter slot--always 0 or 1 Interface port--0 or 1, or | 0/1:1 |
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 -1, or | 1/0:1 |
Cisco uBR7223 router | Port-adapter-slot-number/interface-port-number: | Port adapter slot--always 11 Interface port--0 - 1, or | 1/0:19 |
Cisco uBR7246 and Cisco uBR7246VXR rotuers | Port-adapter-slot-number/interface-port-number: | Port adapter slot--always 1 or 21 Interface port--0 - 1, or | 1/2:1 |
VIP2 or VIP4 in Cisco 7000 series or | Interface-processor-slot-number/port-adapter-slot-number/interface-port-number:channel-group- | 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 - 1, or | 3/1/0:1 |
| 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-MC-8E1on the Catalyst RSM/VIP2 in Catalyst 5000 family switches. The interface address is composed of a three-part number in the format port-adapter-slot-number/interface-port number:channel-group-number.
See Table 1-5 for the interface address format.
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Note The Catalyst RSM/VIP2 supports only the PA-MC-8E1. |
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Note E1 time slots on the multichannel E1/PRI port adapter are numbered 1 to 31, rather than following the more traditional zero-based scheme (0 to 30) used with other Cisco products. This is to ensure consistency with telco numbering schemes for E1 channels within channelized E1 equipment. |
This section describes how to identify the interface addresses used for the PA-MC-2E1 or PA-MC-8E1 in Cisco 7200 series routers or Cisco uBR7200 series routers. The interface address is composed of a three-part number in the format port-adapter-slot-number/interface-port-number: channel-group-number. See Table 1-5 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-MC-2E1 or PA-MC-8E1 in port adapter slot 1 are
1/0 through 1/7 (port adapter slot 1 and interfaces 0 through 7). If the PA-MC-2E1 or PA-MC-8E1 was in port adapter slot 4, these same interfaces would be numbered 4/0 through 4/7 (port adapter slot 4 and interfaces 0 through 7).
In Cisco uBR7200 series routers, port adapter slots are numbered slot 1 and slot 2 for the Cisco uBR7246 and Cisco uBR7246VXR 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-MC-2E1 or PA-MC-8E1 in port adapter slot 2 are 2/0 and 2/1 (port adapter slot 2 and interfaces 0 and 1). If the PA-MC-2E1 or PA-MC-8E1 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).
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Note E1 time slots on the multichannel E1/PRI port adapter are numbered 1 to 31, rather than following the more traditional zero-based scheme (0 to 30) used with other Cisco products. This is to ensure consistency with telco numbering schemes for E1 channels within channelized E1 equipment. |
This section describes how to identify the interface addresses used for the PA-MC-2E1 or PA-MC-8E1 on a VIP2 or 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 the 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 1-5 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:channel-group-number.
If the VIP2 or VIP4 is inserted in interface processor slot 3, then the interface addresses of the PA-MC-2E1 or PA-MC-8E1 are 3/1/0 through 3/1/7 (interface processor slot 3, port adapter slot 1, and interfaces 0 through 7). If the port adapter was in port adapter slot 0 on the VIP2 or VIP4, these same interface addresses would be numbered 3/0/0 through 3/0/7.
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Note If you remove the VIP2 or VIP4 with the PA-MC-2E1 or PA-MC-8E1 (shown in Figure 1-10) from interface processor slot 3 and install it in interface processor slot 2, the interface addresses become 2/1/0 through 2/1/7. |
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Note E1 time slots on the multichannel E1/PRI port adapter are numbered 1 to 31, rather than following the more traditional zero-based scheme (0 to 30) used with other Cisco products. This is to ensure consistency with telco numbering schemes for E1 channels within channelized E1 equipment. |
Posted: Wed Aug 2 07:39:29 PDT 2000
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