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Table Of Contents
Dial Shelf Field-Replaceable Units
LED Indicators and Alarm Buttons
Dial Shelf DC-Input Power Supply
Power Supply Safety Features (Enhanced AC-Input Power Shelf)
Enhanced Power Shelf LED Indicators
Dial Shelf Interconnect Port Adapter
Software and Hardware Requirements
Standard AC-Input Power Shelf LED Indicators
Cisco AS5800 Product Overview
The Cisco AS5800 is a high-density, ISDN and modem WAN aggregation system that provides both digital and analog call termination. It is intended to be used in service provider dial point-of-presence (POP) or centralized enterprise dial environments.
The access server components include a Cisco 5814 dial shelf and a Cisco 7206 router shelf. Two versions of an optional AC power shelf is also available, either standard or enhanced. Dial shelf cards communicate with the host router shelf over a dial shelf interconnect cable. This nonblocking interconnect cable supports 100-Mbps, full-duplex data transfer.
The access server is designed with environmental monitoring and reporting functions to help maintain normal system operation and resolve adverse environmental conditions prior to loss of operation. If conditions reach critical thresholds, the system shuts down to avoid equipment damage from excessive heat or electrical current.
Downloadable software and microcode allow you to load new software images into Flash memory remotely, without having to physically access the router shelf, for fast and reliable upgrades.
This chapter provides physical and functional overviews to familiarize you with your new Cisco AS5800. It contains physical descriptions of system hardware and major components and functional descriptions of component features.
Note
Descriptions and examples of software commands appear in this document only when they are necessary for installing the system hardware. For software configuration information, refer to the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide that shipped with your system. The Cisco AS5800 Universal Access Server Software Installation and Configuration Guide will be replaced by the Cisco AS5800 Universal Access Server Operation, Administration, Maintenance, and Provisioning Guide, available later this year.
System Components
The following sections in this chapter describe the core system components:
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The Cisco AS5800 is designed to be rack-mounted. A rack-mount kit is included with each Cisco 5814 dial shelf and each Cisco 7206 router shelf. Each rack-mount kit provides the hardware needed to mount the dial shelf and router shelf in a standard, 19-in. equipment rack or standard telco rack. If you plan to use a 23-in. equipment rack, you must provide your own brackets or shelves to accommodate the Cisco 7206 router shelf and optional AC power supply. For clearance requirements and rack-mount installation considerations, refer to the section "Site Specifications" in the chapter "."
shows a front view of a Cisco AS5800, and shows a rear view.
shows a front view of a Cisco AS5800 with the enhanced power supply, and shows a rear view of a Cisco AS5800 with the enhanced power supply.
Figure 1-1 Cisco AS5800—Front View
Figure 1-2 Cisco AS5800—Rear View
Figure 1-3 Cisco AS5800 with Enhanced AC-Input Power Shelf—Front View
Figure 1-4 Cisco AS5800 with Enhanced AC-Input Power Shelf—Rear View
Functional Overview
The Cisco AS5800 is a high-density, ISDN and modem WAN aggregation system that provides both digital and analog call termination. It is intended to be used in service-provider dial point-of-presence (POP) or centralized-enterprise dial environments. The dial shelf cards and the host router shelf communicate over a nonblocking interconnect that supports 100-Mbps full-duplex service.
The Cisco AS5800 supports high-density dial aggregation and integrates with Cisco AS5200 and AS5300 access servers for scaling your service provider network. The access server also supports high availability of service through online insertion and removal (OIR) capabilities and redundant power supplies that are hot swappable. All active components within the dial shelf chassis support OIR, which allows components to be removed or replaced while the system is powered on. Dial shelf cards can be busied-out through the software to avoid loss of calls.
Caution
AUG 2 10:57:02.017 CST: %DSC_REDUNDANCY-3-BICLINK: Link to active DSC down
The access server includes a Cisco 5814 dial shelf and a Cisco 7206 router shelf. If you are installing multiple access servers, a system controller is available, which provides a "single system" view of multiple POPs.
The system controller for the access server includes the Cisco 3640 router running Cisco IOS software. The system controller can be installed at a remote facility so that you can access multiple systems through a console port or Web interface. You can download software configurations to any Cisco AS5800 using Simple Network Management Protocol (SNMP) or a Telnet connection. The system controller also provides performance monitoring and accounting data collection and logging.
In addition to the system controller, a network management system with a graphical user interface (GUI) runs on a UNIX SPARC station and includes a database management system, polling engine, trap management, and map integration.
The dial shelf contains ingress interfaces (CT3/CT1/CE1/PRI) that terminate ISDN and modem calls, and break out individual calls (DS0s) from the appropriate telco services. Digital or ISDN calls are terminated onboard the trunk card HDLC controllers, and analog calls are sent to modem resources on the modem cards. As a result, any DS0 can be mapped to any HDLC controller or modem module.You can install multiple ingress interface cards of like or different types, which enables you to configure your systems as fully operative, port redundant, or card redundant, depending on your needs.
Trunk cards and modem cards are tied together across a time division multiplexing (TDM) bus on the dial shelf backplane. The backplane TDM bus transmits and receives PCM-encoded analog data to and from the modem cards. Then the dial shelf and the router shelf exchange framed packets using a proprietary interconnect cable for further processing.
The dial shelf also contains a DSC card that provides clock and power control to the dial shelf cards. Each dial shelf controller card contains a block of logic referred to as the common logic and system clocks. This block generates the backplane Stratum-4 compliant 4-MHz and 8-KHz clocks used for interface timing and for the TDM bus data movement. The common logic can use a variety of sources to generate the system timing, including an E1 or T1 input signal from the BNC connector on the dial shelf controller card front panel. The clock source can also be telco office timing units (BITS clocking) extracted from the network ingress interfaces.
On the DSC card, only one common logic is active at any one time, which is identified by the CLK (clock) LED on the DSC card front panel. The active common logic is user selectable and is independent from each dial shelf controller card. This assures that if a DSC card needs replacing or if the slave DSC card becomes the master, clocking remains stable. The selected common logic should not be changed during normal operation, unless related hardware failure is suspected or diagnosed.
The Cisco 7206 router shelf supports call signaling for PRI interfaces; packet processing, and routing; and all commonly used high-speed LAN and WAN interfaces including Fast Ethernet (FE), Asynchronous Transfer Mode (ATM), High-Speed Serial Interface (HSSI), and Fiber Distributed Data Interface (FDDI). These interfaces are supported by common port adapters that are configured on the Cisco 7206 router shelf.
You can install and upgrade software remotely, without affecting current system operation. You can also upload and download configuration files remotely, without affecting current system operation. Remote access is enabled by use of SNMP, by a Telnet session to a console port on the router shelf, through the World Wide Web (WWW) interface, or through use of the optional system controller network management system.
The Cisco AS5800 can dynamically adjust any port to support any user configuration. Individual users can be authenticated as they connect to the system by use of one or more authentication servers using RADIUS and TACACS+ authentication protocols. Primary and backup authentication servers can define user authentication parameters using user domain and the number called. User profile information can also be configured to include time of day, number of simultaneous sessions, and number of B channels used.
When a remote user connects to the access server using a modem or an ISDN line, the user is authenticated, and establishes a session. Dynamic address assignment from an authentication server or static address assignment connects the user and has virtually no impact on service provider routing tables.
A remote LAN user can connect to the access server using an ISDN line or asynchronous serial connection, be authenticated, and establish a session. In addition to dynamic or static address assignment, this connection requires the traditional Cisco IOS software support for different routing protocols on different ports simultaneously, with virtually no impact on service provider routing tables.
A dial wholesale customer can connect to a Cisco AS5800, then tunnel PPP packet information to a retail service provider using dial virtual private network (dial VPN).
For detailed system specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
Cisco 5814 Dial Shelf
The Cisco 5814 dial shelf contains 14 slots (numbered 0 to 13 on the backplane) and can support as many as 10 modem cards, 2 T3 or 4 T1 trunk cards, and 2 dial shelf controllers (DSCs). Slots 12 and 13 in the dial shelf are dedicated slots for the DSCs. Metal guard pins on the backplane module prevent you from installing any other type of card in these two slots. The modular chassis supports online insertion and removal (OIR) and redundant power and includes environmental monitoring and feedback control.
The dial shelf contains CT1/CE1 or CT3 Primary Rate Interfaces (PRIs) that terminate ISDN and modem calls and break out individual calls from the appropriate telco services. Digital signal level 0 (DS0) or ISDN calls are terminated on the trunk card High-Level Data Link Control (HDLC) controllers, and analog calls are sent to modem resources on the modem cards. As a result, any DS0 can be mapped to any HDLC controller or modem module. You can install multiple ingress interface cards of like or different types, which enables you to configure your systems as fully operative, port redundant, or card redundant, depending on your specific needs.
shows the Cisco 5814 dial shelf, fully loaded.
Figure 1-5 Cisco 5814 Dial Shelf
Clock Management
The DSCs also provide clock and power control to the dial shelf cards. Each DSC contains a block of logic that is referred to as the common logic and system clocks. This block of logic can use a variety of sources to generate the system timing, including an E1 or T1/T3 input signal from the BNC connector on the DSC's front panel.
Only one common logic is active at any one time, which is identified by the clock (CLK) LED on the DSC's front panel. The active common logic is user-selectable and is independent from each DSC. This assures that if a DSC needs replacing or if the slave DSC becomes the master, clocking remains stable. The selected common logic should not be changed during normal operation, unless related hardware failure is suspected or diagnosed.
The configuration commands for the master clock specify the various clock sources and a priority for each source. Together these commands define a list, ordered by priority, of the clock sources used to generate the master clock. The prioritized list, configured on the router shelves, is passed to and stored by the DSC providing the active clock. In the event of failure of the highest-priority clock source, the DSC switches to the source with the next highest priority.
With a split dial shelf, the clock sources can be configured on either of the router shelves. Typically a router configures clock sources only from the slots that it owns; clock sources can be configured from other slots, but they are ignored. On the dial shelf, all valid clock source configurations need to be known to the DSC providing the clock, including the clock source configurations on the router connected to the other DSC.
In a typical Cisco AS5800 configuration (without a split dial shelf), clock source configuration lines that specify an external clock are sent directly from the router shelf to both DSCs. In the split dial shelf configuration, a router can send the clock source configuration only to the DSC to which it is connected, not to both DSCs. If an external clock is used in a split dial shelf configuration, it must be configured identically on both router shelves and must be physically connected to both DSCs.
An error condition can arise if a clock input on one router is configured to have the same priority as a clock input configured on the other router. However, the command is not rejected, because the values configured on the other router may not be known. Warning messages are issued to both routers when this condition is detected. Two clock inputs specified with identical priorities both go into the ordered list of clock sources, but the one received first by the DSC providing the active clock is assigned a higher priority.
The show dial-shelf clocks command shows all configured clock sources, even those from non-owned trunk cards. Only one DSC can provide the master clock; however, backup clock sources might need to be configured for all trunk cards present (regardless of which DSC owns them).
Dial Shelf OIR Events
Each DSC needs to know whether it is to operate in split mode or normal mode, and in split mode it needs to know which slots are owned by its connected router. Currently the DSCs receive inventory messages from the router shelves, informing them which cards the routers think are present in the dial shelf. In split mode operation, these messages have been extended to inform the DSC which mode is current and the set of slots it owns.
Split dial shelf configurations are managed by having the slots that are owned by one router appearing to the other router as empty slots. A router shelf is informed of dial shelf OIR events by messages that are sent to the router shelf when a card is inserted in or removed from a slot. In the split dial shelf configuration, once a DSC is informed by the connected router which slots it owns, it sends messages only for dial shelf OIR events that occur in those slots. The hub on each DSC is configured to ignore traffic from cards in non-owned slots.
Dial Shelf Card Bootup
When a dial shelf card starts running, it sends a message to the DSC. The DSC determines whether it is the master for that slot. In the split dial shelf mode, only the DSC whose connected router owns the slot containing the dial shelf card responds to the message. The dial shelf card accepts firmware and a bootstrap image from that DSC and configures itself to communicate through that DSC's hub. The first time a router shelf sends an inventory response to the DSC, it includes a flag indicating that all dial shelf cards should be reloaded. In split mode, the final dial shelf card image is downloaded by each DSC from the router shelf that owns it.
Slot Ownership Arbitration
The DSCs communicate between themselves to determine which one is to be active, where "being active" implies being the master for all the dial shelf card slots. In split mode, each DSC is the master for the set of dial shelf cards in the slots owned by its connected router. Additional messages indicate when DSCs are in split mode and what set of slots they control.
A DSC that is already in split mode simply advertises that it is in split mode and which slots it is claiming. When a second DSC receives an indication that the first DSC is in split mode, its behavior depends on the current configuration of its attached router.
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Hub Redundancy
In normal mode, both DSCs are connected to the same router shelf. The active DSC monitors the status of its link to the router shelf and, in the event of link failure, requests the other DSC to take over. When operating in split mode, each DSC is connected to a different router shelf, so the DSCs do not send or respond to link failure messages. If one DSC's link fails, the other DSC cannot transparently take over.
TDM Resource Allocation
Trunk cards and modem cards are tied together across a time-division multiplexing (TDM) bus on the dial shelf backplane. Time slots for the TDM bus are allocated by the router shelf on a call-by-call basis. This is implemented by initializing a queue at start up with one element for each usable time slot (currently 14*128 = 1,792 time slots are used). Time slots for a call are allocated from the front of the queue and replaced at the end of the queue when the call is completed. For split dial shelf operation, time slots are added to the queue dynamically, as they are needed. When a TDM slot is required and the queue is empty, a chunk of TDM slots is allocated to the queue.
In normal mode, the router shelf connected to the DSC in slot 12 allocates time slots starting from 0 going up, and the router shelf connected to the DSC in slot 13 allocates time slots starting from 1,791 going down. For split dial shelf operation each router is assigned half of the usable set of time slots. The router shelf connected to the DSC in slot 12 controls the first half of the time slots (0 to 895). The router shelf connected to the DSC in slot 13 controls the second half of the time slots (896 to 1791).
Environmental Monitoring
In split mode, environmental monitoring for the full dial shelf is carried out by both DSCs. This means that warnings about overheating cards go to both router shelves, regardless of which one owns the card (or even if neither claims ownership of the card). Sending the warnings to both routers reduces the chance of an environmental problem going unreported.
For detailed dial shelf specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
Dial Shelf Field-Replaceable Units
The Cisco AS5800 is designed to make component removal and replacement easy. This section describes the Cisco 5814 dial shelf field-replaceable units (FRUs) only. For Cisco 7206 router shelf FRU information, refer to the Cisco 7206 Series Installation and Configuration Guide that shipped with your router shelf.
describes available Cisco 5814 dial shelf FRUs that can be ordered as spares.
Table 1-1 Dial Shelf Field Replaceable Units
T1 trunk card
DS58-12CT1=
E1 trunk card
DS58-12CE1=
T3 trunk card
DS58-1CT3=
DMM modem card
DS58-144CM-CC=
VoIP card
DS58-192VOX
Dial shelf controller card
DS58-DSC=
5814 backplane
MAS-5814BP=
Blank filler cards
DS58-BLANK=
Blower assembly
DS58-FAN=
Filter module
DS5814-DC-FLT=
Power-entry module
DS5814-DC-PEM=
Dial shelf interconnect port adapter and dial shelf interconnect cable1
PA-DSIC=
CAB-DSIC-5= or CAB-DSIC-20=Rack-mount kit
DS58-RMK=
Dial shelf outer packaging
DS5814-PKG=
AC-input power shelf
DS58-PWR-2AC=
AC-input single power supply
DS58-PWR-AC=
1 This module actually installs into the Cisco 7206 router shelf, but can only be used in conjunction with a Cisco 5814 dial shelf.
For information about the trunk cards, modem cards, and Voice over IP cards used in the Cisco 5814 dial shelf, refer to the Cisco AS5800 Universal Access Server Dial Shelf Card Guide that shipped with your system. For information about other FRUs, review the rest of this chapter, or for detailed specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
Dial Shelf Backplane
The Cisco AS5800 is equipped with a field-replaceable backplane module, which is designed to meet critical safety, isolation, and electromagnetic compatibility (EMC) requirements. The Cisco 5814 dial shelf backplane includes 14 slots that seat the ingress trunk cards, the modem cards, and the dial shelf controller cards. shows the Cisco 5814 dial shelf with no cards installed, as viewed from the system front.
Figure 1-6 Cisco 5814 Dial Shelf Backplane—Front View
The dial shelf backplane contains no active components, except for the nonvolatile random-access memory (NVRAM) used for system identification. This is located toward the top of the backplane and provides 1024 bits of nonvolatile read-write memory.
The dial shelf backplane contains the connectors that connect directly with the dial shelf cards and dial shelf controller cards. It also includes a 20-pin molex MiniFit connector that connects to the blower assembly. The dial shelf backplane also includes additional maintenance bus (MBus) connectors to the power-entry modules (PEMs) and filter module, which are used for monitoring environmental conditions. These backplane connectors are shown in .
Note
Figure 1-7 Cisco 5814 Dial Shelf Backplane—Rear View
The dial shelf backplane first receives -48 VDC power from the DC-input power supplies by way of the filter module, and the power is then distributed throughout the dial shelf. The DC PEMs connect to the backplane using four blind-mating 1.25-in. power studs, which are located near the bottom of the backplane.
Three bus connections are routed over the backplane:
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For detailed specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
Dial Shelf Blower Assembly
The blower assembly in the Cisco 5814 dial shelf monitors the dial shelf internal operating temperatures and maintains acceptable cooling parameters. The blower assembly contains three variable-speed impeller fans and a controller card that performs the following functions:
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The controller card contains temperature sensors, which monitor internal air temperature within the dial shelf chassis. These temperature sensors, along with other system maintenance sensors, can detect areas exceeding the temperature set point.
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Fan speed is controlled by a microprocessor on the controller card. If air temperature within the dial shelf chassis exceeds the acceptable operating range, the controller card increases the fan speed in an attempt to control the temperature. If temperatures continue to rise, the controller card linearly increases fan speed until the fans reach full speed. If acceptable operating temperatures are still unobtainable, the system environmental monitor shuts down all internal power, thus preventing equipment damage from excessive heat.
During normal operation, the three fans "load-share" to provide cooling. If one of the three fans fails, a warning message displays on your console screen. The controller card then increases the speed of the remaining operative fans to maintain acceptable temperature levels.
When all three fans are operating normally, fan speed is 1,600 rpm. As ambient air temperature increases, fan speed increases accordingly. Thus, if one of the fans becomes inoperative, the remaining fans increase fan speed to 2,400 rpm.
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The blower assembly supports OIR, which means you can remove and replace the blower assembly while the system is operating; system operation will not be affected. However, if you expect the replacement process to exceed 1 min, we recommend that you shut down the system. Normal blower assembly replacement is estimated not to exceed 30 sec.
The blower assembly is located directly above the dial shelf cards and dial shelf controller cards in the dial shelf. You install the blower assembly into the front of the dial shelf chassis where it plugs directly into the dial shelf backplane. shows the location of the blower assembly in a fully configured Cisco 5814 dial shelf, as viewed from the front of the system.
For detailed specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
Figure 1-8 Cisco 5814 Dial Shelf with Blower Assembly Installed—Front View
Dial Shelf Controller Card
The dial shelf controller card is the main processor card for the dial shelf, and it performs the following functions:
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A backplane interconnect concentrator on each dial shelf controller card connects to each dial shelf card installed in the dial shelf.
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Install the dial shelf controller card in the Cisco 5814 dial shelf in either of the two far-right slots (numbered 12 and 13). The card plugs directly into the backplane.
The dial shelf controller card consists of the following components:
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For detailed specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
lists the dial shelf controller card memory components and product numbers.
Table 1-2 Dial Shelf Controller Card Memory Components
DRAM
32 MB
2 16-MB SIMMS
MEM-DS58-16M
PCMCIA Flash (choose one)
8 MB
16 MB
20 MB1
1
1MEM-DS58-FLC8M=
MEM-DS58-FLC16M=
MEM-DS58-FLC20M=
Note
shows the dial shelf controller card components.
Figure 1-9 Dial Shelf Controller Card Components
Note
shows the front view of the Cisco 5814 dial shelf with two dial shelf controller cards installed.
Figure 1-10 Cisco 5814 Dial Shelf with Dial Shelf Controller Cards Installed—Front View
LED Indicators and Alarm Buttons
The dial shelf controller card front panel contains several LEDs, push buttons, LCDs, and connectors. Unlike the other dial shelf cards installed in the Cisco 5814 dial shelf, the dial shelf controller card has two power LEDs, one for the card and the other for the system MBus power.
shows the dial shelf controller card front panel LEDs.
Figure 1-11 Dial Shelf Controller Card Front Panel LEDs
describes the dial shelf controller front panel LEDs and LCDs.
Table 1-3 Dial Shelf Controller Front Panel LEDs and LCDs
PWR (dial shelf controller power)
Green
Lights when power is ON.
MBUS (system MBus power)
Green
Lights when the dial shelf controller card is supplying +5 VDC to the system MBus.
MAJ (major alarm)
Yellow
Lights to indicate a major1 alarm condition.
MIN (minor alarm)
Yellow
Lights to indicate a minor2 alarm condition.
ACO (alarm cutoff)
Yellow
Lights to indicate the alarm cutoff button has been pressed.
HIST (history clear)
Yellow
Lights when software recognizes a major or minor alarm situation. LED powers off when the Clear Alarm button is pressed and no alarm condition remains.
CLK (clock)
Green
Lights to identify the dial shelf controller card active clock; active clock is independent from master dial shelf controller card designation.
MAST (master)
Green
Lights to indicate the system software recognizes the dial shelf controller card is in master mode.
Slot 0
Green
Lights when PCMCIA slot 0 is in use.
Slot 1
Green
Lights when PCMCIA slot 1 is in use.
Clock and Status LEDs (continued)
DSI (dial shelf interconnect)
Green
Lights to indicate a working connection between the dial shelf and router shelf.
10BaseT (Ethernet link)
Green
Lights to indicate a working data transfer link connection between the access server and the system controller.
LCDs (upper and lower)
Alphanumeric; four characters each
Displays ACTV to indicate active (master) card.
Displays BKUP to indicate backup (slave) card.
1 A major alarm condition includes router shelf failure, backplane interconnect failure, two-fan failure, power supply failure, dial shelf card failure, or conditional environmental thresholds.
2 A minor alarm condition includes modem SIMM failure, HDLC controller failure, or conditional environmental thresholds.
shows the dial shelf controller card front panel push buttons, and describes push button actions.
Figure 1-12 Dial Shelf Controller Card Front Panel Push Buttons
Table 1-4
Dial Shelf Controller Card Pushbuttons
CautionPressing the ATTEN(tion) button on a given DSC has the effect of completely stopping all functionality on that DSC. There is no confirmation requested if the ATTEN push button is pressed. The DSC is stopped without recourse.
shows the dial shelf controller card front panel ports, and describes the port functions.
Figure 1-13 Dial Shelf Controller Card Ports
Warning
Note
Table 1-5
Dial Shelf Controller Card Front Panel Ports
Common Logic Interface
Each DSC card contains a block of logic referred to as the common logic and system clocks. This block generates the backplane Stratum-4 compliant 4-MHz and 8-kHz clocks used for interface timing and for the TDM bus data movement. The common logic can use a variety of sources to generate this system timing, including an E1 or T1 signal input from the BNC connector on the dial shelf controller card front panel.
Only one common logic is active at a time, identified by the CLK LED on the DSC card front panel. The active common logic is user-selectable and is independent from each DSC card. This assures that if you need to replace a DSC, or if the slave dial shelf controller card becomes the master, clocking remains stable. The selected common logic should not be changed during normal operation unless a hardware failure is suspected or diagnosed in the DSC card.
Dial Shelf DC-Input Power Supply
The Cisco AS5800 is equipped with two power-entry modules (PEMs) in the dial shelf, which accept DC-input power either from your site DC source or from an optional AC-input power shelf, and distribute -48 VDC power to the dial shelf components. The PEMs provide power redundancy and load-sharing; however, a single PEM can power a fully configured system.
Note
The PEMs and the filter module are cooled by system air flow, which flows from the top to the back of the dial shelf chassis. The front and sides of the PEMs are perforated for minimum air flow restriction.
The PEMs support the following functions:
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The DC-input power supply provides redundant power by design. During normal operation, the two PEMs provide system power simultaneously (load share). When you remove one PEM, the remaining PEM immediately ramps up to provide full power and maintain uninterrupted system power.
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A 10-pin connector monitors system environmental status and communicates this status from each PEM to the filter module maintenance bus (MBus). lists connector pins supporting system status signals.
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The DC-input power supply is designed to prevent any energy hazard during operation. DC power is first routed to a circuit breaker, followed by a surge protector. In addition, an isolation diode circuit protects against possible DC-input failure.
The DC-input power supply monitors analog output voltage and current. The battery side of the DC input is equipped with a 60 A circuit breaker, which trips if current reaches peak parameters for 2 sec. The DC-input power supply circuits are described in .
If a PEM is not properly seated in the Cisco 5814 dial shelf backplane, an electronic circuit, or interlock, trips a breaker in the PEM and terminates power to the output connectors. This same interlock provides reverse polarity protection when the system is powered off.
Note
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The PEMs provide relay outputs for standard central office bell alarms. These bell alarm contacts are available on a terminal plug mounted on the PEM front panel.
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The PEMs support OIR, which means that you can remove or replace a PEM while the system is operating; system operation is not affected.
The PEMs are located on either side of the filter module below a removable rear cover. shows the location of the PEMs as viewed from the dial shelf rear.
Figure 1-14 Power-Entry Modules—Dial Shelf Rear View
The PEMs contain two LEDs on the front panel—POWER and MISWIRE. The POWER LED indicates that input voltage is present and the PEM circuit breaker is on; the MISWIRE LED should remain off, but lights if the two DC conductors entering the PEM DC-input power terminal block (see ) are reversed.
For detailed specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
Dial Shelf Filter Module
The Cisco AS5800 is equipped with a passive DC power filter in the dial shelf, which contains a broadband electromagnetic interference (EMI) filter and circuitry for monitoring power coming into the dial shelf. The DC power filter is housed in the filter module, which resides in the dial shelf between the two PEMs.
The DC power filter supports the following functions:
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The filter module first receives -48 VDC power from the PEMs using analog isolation circuits. The DC power passes through a broadband EMI filter in the filter module, then passes to a DC-to-DC converter on the dial shelf controller card, where it is converted and then routed back to the backplane for distribution to the dial shelf cards. A single filter module supports a fully configured dial shelf.
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The filter module contains the environmental maintenance bus (MBus) module with a logic card, which carries monitor signals throughout the dial shelf by way of two 10-pin molex MiniFit connectors.
The front and top of the filter module are perforated for minimum air flow restriction. There are no connectors accessible from the front; however, a DB-9 connector at the base of the filter module (visible only from below the dial shelf) connects a monitor cable to an optional AC-input power shelf.
shows a filter module installed in the rear of a Cisco 5814 dial shelf.
Figure 1-15 Filter Module—Dial Shelf Rear View
For detailed specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
Enhanced AC-Input Power Shelf
The enhanced AC-input power shelf includes two 2,000-watt (W) AC-input power supplies that plug into a common power backplane in the enhanced AC-input power shelf. A single AC-input power supply is capable of powering a fully configured Cisco 5814 dial shelf. A second power supply provides full redundancy.
During normal operation, the dual AC-input power supplies provide automatic load-sharing, with each power supply supporting 50 percent of the power load. When you remove one of the AC-input power supplies, the remaining power supply immediately ramps up to full power and maintains uninterrupted system power.
Note
Each AC-input power supply is powered ON by a separate power switch, which is located on the enhanced AC-input power shelf front panel (). Ejector levers with locking spring clips secure each power supply to the backplane connectors, and a handle on each power supply allows you to remove and replace the power supplies with ease.
Figure 1-16 Cisco AS5800 Enhanced AC-Input Power Shelf—Front View
The enhanced AC-input power shelf is three rack units high [5.25 in. (13.32 cm)], and mounts underneath the dial shelf in a standard 19-in., 4-post or telco-type rack assembly.
All cable connections for AC-input power, DC-output power, and status signals are made from the enhanced AC-input power shelf rear. (See ) Two modular power cables connect each AC-input power supply to the site AC-input power source. Two DC-interconnect cables provide DC-output power to the dial shelf. A monitor cable provides a status signal connection to the dial shelf filter module maintenance bus (MBus), that monitors voltage tolerance levels, temperature conditions, and power failure in the enhanced AC-input power shelf. A grounding cable provides a ground connection from the enhanced AC-input power shelf to the dial shelf.
Figure 1-17 Cisco AS5800 Enhanced AC-Input Power Shelf—Rear View
For detailed specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
Power Supply Safety Features (Enhanced AC-Input Power Shelf)
The power supplies in the enhanced AC-input power shelf have the following safety features:
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Internal monitoring data is passed to the dial shelf through the maintenance bus (MBus) monitoring system. You can view this data through a terminal connected to the router shelf console port. The command to display the monitoring information is described in the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide (DOC-AS5800-SICG=). The Cisco AS5800 Universal Access Server Software Installation and Configuration Guide will be replaced by the Cisco AS5800 Universal Access Server Operation, Administration, Maintenance, and Provisioning Guide, available later this year.
Enhanced Power Shelf LED Indicators
The enhanced AC-input power shelf includes two inputs that are located on the left front of the power shelf and three LEDs that are located on the front of each power supply for the enhanced AC-input power shelf (See Figure 1-25.)
Figure 1-18 Enhanced AC-Input Power Supply LEDs
The power supply LEDs for the enhanced AC-input power shelf are summarized in .
Note
Cisco 7206 Router Shelf
This section provides physical and functional overviews of the Cisco 7206 router shelves. It contains physical descriptions of the router hardware and major components and functional descriptions of hardware-related features.
The Cisco 7206 router supports call signaling for PRI interfaces; packet processing; and multiprotocol, multimedia routing and bridging with all commonly used high-speed LAN and WAN interfaces, including Ethernet, Fast Ethernet (FE), Asynchronous Transfer Mode (ATM), High-Speed Serial Interface (HSSI), and Fiber Distributed Data Interface (FDDI).
The Cisco 7206 router shelf handles upper layer routing tasks and provides the following features:
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shows the significant Cisco 7206 router components.
Figure 1-19 Cisco 7206 Router Components
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Network Interfaces
Network interfaces reside on port adapters that provide the connection between the router's three peripheral component interconnect (PCI) buses and external networks. The Cisco 7206 has six slots (slots 1 to 6) for the port adapters, one slot for an Input/Output (I/O) controller, and one slot for a network processing engine (NPE). You can place port adapters in any of the six available slots.
The front of the Cisco 7206 provides access to an I/O controller and up to six network interface port adapters. The I/O controller contains the following:
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The port adapters installed in the Cisco 7206 router are of the same type as those installed on the second-generation Versatile Interface Processors (VIP2s) in the Cisco 7500 series routers, in Cisco 7000 series routers using the Cisco 7000 series Route Switch Processor (RSP7000) and Cisco 7000 series Chassis Interface (RSP7000CI), and in the Cisco uBR7246 universal broadband router. The port adapters installed in the Cisco 7206 support OIR. For an explanation of OIR, see the "Online Insertion and Removal" section.
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Port adapter slots in the Cisco 7206 routers are numbered from left to right from the bottom up, beginning with port adapter slot 1 and continuing through port adapter slot 6. Port adapter slot 0 is the Fast Ethernet port on the I/O controller. (See .)
Figure 1-20 Port Adapter Slot Numbering
Power Supplies
The Cisco 7206 router is equipped with one 280W AC-input or one 280W DC-input power supply. A fully configured Cisco 7206 router operates with only one installed power supply; however, a second, optional power supply of the same type provides hot-swappable, load-sharing, redundant power. shows the rear of a Cisco 7206 router configured with a single AC-input power supply. (A power supply filler plate is installed over the second power supply bay.)
Caution
The power supply has the router's main power switch and either an AC-input power receptacle or a hardwired DC-input power cable (depending on the type of installed power supply). The rear of the Cisco 7206 router provides access to the network processing engine and the power supplies. Adjacent to the power supply bays are two chassis ground receptacles that provide a chassis ground connection for ESD equipment or a two-hole grounding lug. (See .)
Figure 1-21 Cisco 7206 Router—Rear View
Three internal fans draw cooling air into chassis and across internal components to maintain an acceptable operating temperature. The three fans are enclosed in a tray that is located in the subchassis.
Caution
Network Processing Engine
The network processing engine has no external connectors or LEDs. There is a handle for removing and installing the network processing engine and two captive screws for securing it to the chassis.
Note
The Midplane
The I/O controller, port adapters, power supplies, and network processing engine slide into their respective chassis slots and connect directly to the router's midplane; there are no internal cables to connect. The midplane distributes DC power from the power supplies to the I/O controller, port adapters, fan tray, and network processing engine.
The midplane also identifies OIR of the port adapters, bridges the PCI buses from the port adapters to packet static random-access memory (SRAM) on the network processing engine, arbitrates traffic across the PCI buses, and generates the clock signals for the port adapters on each PCI bus.
Rack-Mount Kit
A rack-mount kit is included with all Cisco 7206 routers when they are shipped from the factory. The kit provides the hardware needed to mount the router in a standard 19-in. equipment rack or a telco rack. The steps for installing a Cisco 7206 router in an equipment rack are explained in the Cisco 7206 Installation and Configuration Guide (Document Number DOC-7206-ICG=).
A fully configured Cisco 7206, with two installed power supplies and all chassis slots filled, weighs approximately 50 lb (22.7 kg). For clearance requirements and rack-mount installation considerations, refer to the Cisco 7206 Installation and Configuration Guide (Document Number DOC-7206-ICG=).
Field-Replaceable Units
The Cisco 7206 router is easy to service; all its major components are FRUs. Instructions for removing and replacing individual FRUs are contained in separate documents, called configuration notes, which accompany every FRU shipped from the factory. The configuration notes are also available on the Documentation CD-ROM and on Cisco Connection Online (CCO).
The following Cisco 7206 components are FRUs:
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Detailed instructions for removing and replacing the network processing engine are contained in Network Processing Engine Replacement Instructions (Part Number 78-3225-xx).
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Detailed instructions for removing and replacing the I/O controller are contained in Input/Output Controller Replacement Instructions (Part Number 78-3224-xx).
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The Cisco 7206 is shipped from the factory with up to six installed port adapters that provide a variety of network media types (based on your order). The port adapters connect directly to the router's midplane. Port adapters installed in the Cisco 7206 router support OIR.
Detailed instructions for removing, replacing, and configuring the port adapter types supported by the Cisco 7206 are contained in the configuration note for that port adapter. For example, if you plan to replace a four-port, half-duplex Token Ring port adapter in your Cisco 7206 router, refer to PA-4R Token Ring Port Adapter Installation and Configuration (Part Number 78-2661-xx).
For general instructions about how to remove and replace a port adapter, refer to the Cisco 7206 Installation and Configuration Guide (Document Number DOC-7206-ICG=).
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Detailed instructions for removing and replacing the Cisco 7206 power supplies are contained in 280-Watt AC-Input Power Supply Replacement Instructions (Part Number 78-3227-xx) and 280-Watt DC-Input Power Supply Replacement Instructions (Part Number 78-3420-xx).
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Detailed instructions for removing and replacing the fan tray are contained in Subchassis and Fan Tray Replacement Instructions (Part Number 78-3228-xx).
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Detailed instructions for removing and replacing the subchassis are contained in Subchassis and Fan Tray Replacement Instructions (Part Number 78-3228-xx).
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To replace the chassis you must remove all internal components. When replacing the chassis, refer to the individual configuration notes that explain how to remove and replace each internal component.
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Detailed instructions for removing and replacing Flash memory cards and SIMMs are contained in the configuration note Memory Replacement Instructions for the Network Processing Engine and Input/Output Controller (Part Number 78-3226-xx).
Instructions for installing and removing a Flash memory card are also contained in the Cisco 7206 Installation and Configuration Guide (Document Number DOC-7206-ICG=).
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Detailed instructions for installing the rack-mount and cable-management brackets on your Cisco 7206,are contained in the Cisco 7206 Installation and Configuration Guide (Document Number DOC-7206-ICG=).
Dial Shelf Interconnect Port Adapter
The Cisco AS5800 includes a dial shelf interconnect port adapter that connects the Cisco 5814 dial shelf to the Cisco 7206 router shelf. The interconnect port adapter installs in any 7206 router shelf port adapter slot and connects directly to the dial shelf controller card on the dial shelf using a single full-duplex cable.
The interconnect port adapter allows data transfers between the dial shelf and the router shelf. Data is converted into packets by the dial shelf cards, transmitted to a hub on the dial shelf controller card, and sent to the router shelf from there. Conversely, packets from the router shelf are sent to the dial shelf controller card, where they are transmitted over the backplane to the modem and trunk cards.
LED Indicators
The dial shelf interconnect port adapter contains two LEDs: an enabled LED and a link status LED, shown in . After system initialization, the enabled LED lights to indicate that the dial shelf interconnect port adapter has been enabled for operation.
Figure 1-22 Dial Shelf Interconnect Port Adapter Front Panel
The following conditions must be met before the dial shelf interconnect port adapter is enabled:
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If any of the above conditions are not met, or initialization fails for other reasons, the enabled LED remains off.
The link LED indicates an active connection to the dial shelf. This LED lights when the dial shelf interconnect port adapter is receiving a carrier signal from the dial shelf.
Software and Hardware Requirements
The dial shelf interconnect port adapter requires that the host Cisco 7206 router shelf is running Cisco IOS Release 11.3(2) AA or later.
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Port adapters are rated by data-carrying capacity as high, medium, or low bandwidth. The host Cisco 7206 router shelf has certain data carrying capacity (or bandwidth) restrictions that affect the number of high bandwidth port adapters you can install. The dial shelf interconnect port adapter is considered to be high bandwidth. Refer to the Cisco 7200 Series Port Adapter Hardware Configuration Guidelines document that shipped with your Cisco 7206 router shelf for more information on port adapter installation restrictions.
Split Dial Shelves
The split dial shelf configuration of the Cisco AS5800 dial platform increases bandwidth by using two Cisco 7206 router shelves to service a single Cisco 5814 dial shelf. The dual router shelves serve as the interfaces between the split Cisco 5814 dial shelf and the external network. This configuration provides the equivalent of two Cisco AS5800s in a single rack. Split dial shelf configuration requires two DSC cards and two Cisco 7206 router shelves (both with dial shelf interconnect port adapters). For more information on hardware and software configuration needed for a split dial shelf configuration, refer to the Cisco AS5800 Universal Access Server Split Dial Shelf Installation and Configuration document or the Cisco AS5800 Universal Access Server Operations, Administration, Maintenance, and Provisioning Guide, available soon.
Power Requirements
The Cisco AS5800 ships configured for either AC-input or DC-input power with loadsharing, depending on your order.
AC-Input Power Shelf
The AC-input power shelf includes two 2,000W AC-input power supplies that plug into a common power backplane in the AC-input power shelf. A single AC-input power supply is capable of powering a fully configured Cisco 5814 dial shelf. A second power supply provides full redundancy.
During normal operation, the dual AC-input power supplies provide automatic loadsharing, with each power supply supporting 50 percent of the power load. When you remove one of the AC-input power supplies, the remaining power supply immediately ramps up to full power and maintains uninterrupted system power.
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Each AC-input power supply is powered ON by a separate power switch, which is located on the AC-input power shelf front panel. (See .) Ejector levers with locking spring clips secure each power supply to the backplane connectors, and a handle on each power supply allows you to remove and replace the power supplies with ease.
Figure 1-23 Cisco AS5800 Standard AC-Input Power Shelf—Front View
The AC-input power shelf is three rack units high [5.25 in. (13.32 cm)], and mounts underneath the dial shelf in a standard 19-in. 4-post or telco-type rack assembly. Note the rack placement of the AC-input power shelf in Figure 1-1.
All cable connections for AC-input power, DC-output power, and status signals are made from the AC-input power shelf rear. (See .) Two modular power cables connect each AC-input power supply to the site AC-input power source. Two DC-interconnect cables provide DC-output power to the dial shelf. A monitor cable provides a status signal connection to the dial shelf filter module MBus, which monitors voltage tolerance levels, temperature conditions, and power failure in the AC-input power shelf. A grounding cable provides a ground connections from the AC-input power shelf to the dial shelf.
Figure 1-24 Cisco AS5800 Standard AC-Input Power Shelf—Rear View
Standard AC-Input Power Shelf LED Indicators
The standard AC-input power shelf includes two LEDs that are located on the left front of the power shelf and four LEDs that are located on the front of each power supply. (See Figure 1-25.)
Figure 1-25 Standard AC-Input Power Supply LEDs
The standard AC-input power supply LEDs are summarized in .
DC-Input Power Specifications
The PEMs provide -48 VDC power, which is distributed from the filter module to the dial shelf backplane. The analog isolators in the filter module are provided with 15 VDC. No damage will come to the PEMs if any or all outputs have no load (no load occurs when there are no cards plugged into the backplane) or if the maximum input voltage is exceeded; however, input voltages that exceed 75V will eventually trip the PEM 60A circuit breaker, and you may have to reset the breaker.
The Cisco AS5800 supports several types of logic cards with varying power requirements. As a result, each logic card DC-to-DC converter system is isolated from the distributed -48 VDC power, creating a more stable distributed power system.
AC-Input Power Specifications
The Cisco AS5800 accepts AC-input power using a separate, self-contained AC-input power shelf, which converts AC-input power into DC output for use by the DC-powered dial shelf. The AC-input power shelf is rack mounted and has a safety cover that shields the electrical connections in the power shelf rear.
The AC-input to DC-output connection supplies -48 VDC-output power to the dial shelf PEMs. The PEMs receive the -48V and transmit power to the filter module. Power flows through the filter module to the backplane, where it is distributed to the dial shelf controller card and dial shelf cards.
The AC-input power shelf includes two 2,000W AC-input power supplies that plug into a common power backplane in the AC-input power shelf. A single AC-input power supply is capable of powering a fully configured Cisco 5814 dial shelf. The second power supply provides full redundancy.
During normal operation, the dual AC-input power supplies provide automatic loadsharing, with each power supply supporting 50 percent of the power load. When you remove one of the AC-input power supplies, the remaining power supply immediately ramps up to full power and maintains uninterrupted system power.
The AC-input power supplies are "hot-swappable," allowing you to remove or replace a power supply while the system is operating; system operation is not affected. Whenever possible, we recommend that you connect each AC-input power supply to a separate AC power source.
Each AC-input power supply is powered on by a separate power switch, which is located on the AC-input power shelf front panel. (See .) Ejector levers with locking spring clips secure each power supply to the backplane connectors, and a handle on each power supply allows you to remove and replace the power supplies with ease.
The AC-input power shelf is three rack-units high (5.25 in. [13.3 cm]) and rack-mounts in a standard 19-in., 4-post or telco rack assembly, one rack unit below the dial shelf.
All cable connections for AC-input power, DC-output power, and status signals are made from the AC-input power shelf rear. (See .) Two modular power cables connect each AC-input power supply to the site's AC-input power source. Two DC-interconnect cables provide DC-output power to the dial shelf. A monitor cable provides a status signal connection to the dial shelf filter module MBus, which monitors voltage tolerance levels, temperature conditions, and power failure in the AC-input power shelf. A grounding cable provides a ground from the AC-input power shelf to the dial shelf.
For detailed specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
Enhanced AC-Input Power Shelf
The enhanced AC-input power shelf includes two 2,000-watt (W) AC-input power supplies that plug into a common power backplane in the enhanced AC-input power shelf. A single AC-input power supply is capable of powering a fully configured Cisco 5814 dial shelf. A second power supply provides full redundancy.
During normal operation, the dual AC-input power supplies provide automatic load-sharing, with each power supply supporting 50 percent of the power load. When you remove one of the AC-input power supplies, the remaining power supply immediately ramps up to full power and maintains uninterrupted system power.
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Each AC-input power supply is powered ON by a separate power switch, which is located on the enhanced AC-input power shelf front panel (). Ejector levers with locking spring clips secure each power supply to the backplane connectors, and a handle on each power supply allows you to remove and replace the power supplies with ease.
Figure 1-26 Cisco AS5800 Enhanced AC-Input Power Shelf—Front View
The enhanced AC-input power shelf is three rack units high [5.25 in. (13.32 cm)], and mounts underneath the dial shelf in a standard 19-in., 4-post or telco-type rack assembly.
All cable connections for AC-input power, DC-output power, and status signals are made from the enhanced AC-input power shelf rear. (See .) Two modular power cables connect each AC-input power supply to the site AC-input power source. Two DC-interconnect cables provide DC-output power to the dial shelf. A monitor cable provides a status signal connection to the dial shelf filter module maintenance bus (MBus), that monitors voltage tolerance levels, temperature conditions, and power failure in the enhanced AC-input power shelf. A grounding cable provides a ground connection from the enhanced AC-input power shelf to the dial shelf.
Figure 1-27 Cisco AS5800 Enhanced AC-Input Power Shelf—Rear View
For detailed specification tables, refer to Appendix A, "Cisco AS5800 Specifications."
Online Insertion and Removal
The Cisco AS5800 supports online insertion and removal (OIR), which allows you to remove and replace a dial shelf card while the system is operating, without affecting system operation.
Caution
AUG 2 10:57:02.017 CST: %DSC_REDUNDANCY-3-BICLINK: Link to active DSC down
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Each DSC card and dial shelf card contains female connectors that connect to the system backplane. Each male backplane connector comprises a set of tiered pins in three lengths. The backplane pins send specific signals to the system as they make contact with the card connectors. The system assesses the signals it receives and the order in which it receives them to determine whether to initialize a startup or shutdown procedure.
Each DSC card and dial shelf card is designed with two ejector levers to be used when you install or remove a card. The function of the ejector levers (see ) is to align and securely seat the card connectors in the backplane and facilitate the installation and removal process.
Do not force the DSC cards or dial shelf cards into the slot, because this can damage the card connector pins if they are not aligned properly with the card connectors.
To avoid erroneous failure messages, you must allow at least 15 sec for the system to reinitialize and note current interface configurations before you remove or insert another DSC card or dial shelf card in the dial shelf.
