The Cisco 6130 with NI-2 system is part of the Cisco DSL product family that provides end-to-end service by carrying data between a subscriber's home or office, a telephone central office (CO), and various networks. The Cisco 6130 with NI-2 system sends and receives subscriber data (often Internet service) over existing copper telephone lines, concentrating all traffic onto a single high-speed trunk for transport to the Internet or a corporate intranet. Asymmetric digital subscriber line (ADSL) and symmetrical digital subscriber line (SDSL) customer premises equipment (CPE) devices, which are connected to PCs or routers at the subscriber site, modulate data so that the data can travel over telephone lines to the Cisco 6130 digital subscriber line access multiplexer (DSLAM) at the CO.
The Cisco 6130 with NI-2 system may include the following components:
Cisco 6130 chassis.
Cisco 6120 chassis or third-party POTS splitter—A passive plain old telephone service (POTS) splitter.
Management software—Provisions and manages the Cisco 6130 system.
Cisco IOS—A command-line interface (CLI) that is available for network element provisioning.
Cisco DSL Manager (CDM)—A graphical user interface (GUI) designed to configure and manage the 6xxx series of Cisco IOS software-based DSL access multiplexers (DSLAMs). CDM provides the following areas of network management—fault, configuration, performance, and security. CDM runs with the Cisco Element Manager Framework (EMF); both are installed on Sun workstations.
Cisco EMF is based on an object model in which network elements or modules represent the managed entity. Each object is defined by a class and specific attributes. An object can represent a network element or a more abstract entity such as a link relationship, a network, or a container such as a site, shelf, or region.
Note See the "Hardware Specifications"
section for minimum software and network management release requirements
per Cisco 6130 chassis component.
Features
The Cisco 6130 with NI-2 system includes the following features:
Supports both ADSL and SDSL
Carrierless amplitude and phase modulation (CAP) rate adaptive DSL (RADSL), ANSI T1.413 Discrete Multitone (DMT), and G.lite modem support
Small footprint that terminates up to 128 ADSL/SDSL subscriber lines
NEBS compliant, 23-inch chassis
Manageable through Cisco IOS or CDM
Supports subtending of as many as twelve Cisco 6130 chassis, for a maximum of 1664 subscribers
Supports the entire range of virtual channel identifier (VCI)/virtual path identifier (VPI) connections; none of the connections are limited by memory
ATM Forum UNI Versions 3.1 and 4.0 compliant
Nonblocking ATM switching architecture
Allows up to four ATM classes of service simultaneously
Supports NI-2 card cold redundancy and automatic protection switching (APS) link redundancy
Configurations
This guide details the installation steps for the following configurations:
Cisco 6130 with a POTS splitter
Cisco 6130 without a POTS splitter
Subtended network
Cisco 6130 with a POTS Splitter Configuration
The Cisco 6130 with a POTS splitter configuration supports up to 128 subscribers through directly connected modems using ADSL technology. To increase subscribership, you can add additional chassis to your system.
This configuration includes the following hardware components:
Cisco 6130—Maximum of two chassis are allowed per rack.
Quad-port DMT ATU-C line cards (4xDMTs).
Quad-port flexi ATU-C line cards (4xflexis)—Configure as CAP, DMT, or G.lite.
One or two NI-2 cards—DS3/2DS3 or OC-3c/OC-3c.
Cisco 6120 or a third-party POTS splitter.
DMT POTS cards (use in either the Cisco 6120 or the third-party POTS splitter).
Fan tray—A fan tray must be installed under each Cisco 6130 chassis.
Figure 1-1 shows the components for a Cisco 6130 chassis with a POTS splitter configuration.
Figure 1-1 Cisco 6130 with a POTS Splitter Configuration
Note Either a Cisco 6120 or a third-party POTS splitter can be used in a Cisco 6130 with a POTS
splitter configuration.
A system configuration using quad-port line cards requires a POTS splitter capacity of 128
subscriber ports. Each Cisco 6120 POTS splitter supports up to 64 subscribers. Depending on
the POTS splitter selected for your configuration (Cisco 6120 or third-party), the installation of
an additional POTS splitter may be necessary.
Both a Cisco 6120 and a third-party POTS splitter can be used with the same Cisco 6130 chassis;
however, Cisco does not supply the special cables required for this type of POTS configuration.
For third-party POTS splitter port mapping and cable pinout specifications, consult the
appropriate vendor documentation.
Cisco 6130 Without a POTS Splitter Configuration
The Cisco 6130 without a POTS splitter configuration supports up to 128 subscribers through directly connected modems using either ADSL or SDSL technology. To increase subscribership, you can add additional chassis to your system.
This configuration includes the following hardware components:
Cisco 6130—Maximum of two chassis are allowed per rack.
4xDMTs.
4xflexis—Configure as CAP, DMT, or G.lite.
Quad-port STU-C line cards (4xSDSLs).
One or two NI-2 card(s)—DS3/2DS3 or OC-3c/OC-3c.
Fan tray—A fan tray must be installed under each Cisco 6130 chassis.
In this configuration, the Cisco 6130 connects directly to the main distribution frame (MDF).
Figure 1-2 shows the components for a Cisco 6130 without a POTS splitter configuration.
Figure 1-2 Cisco 6130 Without a POTS Splitter Configuration
Subtended Network Configuration
A subtended network configuration
Services and aggregates the data from one or more remotely located Cisco 6130 chassis into a subtending host chassis to take advantage of the data network interface on the subtending host chassis
Provides additional benefits by reducing the number of ATM edge-switch ports that are required to terminate the chassis
Supports both a Cisco 6130 with a POTS splitter and a Cisco 6130 without a POTS splitter configuration
Supports NI-2 card cold redundancy in subtended node chassis if both the subtending host chassis and the subtended node chassis have primary and secondary NI-2 cards installed
Note An NI-2 card failure on a node in a subtend tree or daisy-chain temporarily interrupts traffic
to all subtended node chassis.
Supports APS link redundancy on subtended OC-3c interfaces if both the subtending host chassis and the subtended node chassis have primary and secondary NI-2 cards installed
Tip The term subtending refers to the host chassis, and subtended refers to the downstream chassis in a subtended network.
A subtended network configuration supports the following features:
The capacity to run data as fast as the speed of its subtended link. Uplink speed cannot exceed the OC-3c speed.
Four arbitration priorities, one for each quality of service (QoS) level. The supported QoS service levels are
Constant bit rate (CBR) for rate-limited services that require guaranteed bandwidth and bounded delay.
Variable bit rate real time (VBR-rt) for delay-sensitive voice and video services.
Variable bit rate nonreal time (VBR-nrt) for high-priority data services.
Unspecified bit rate (UBR) for low-priority data services.
Explicit forward congestion indication (EFCI) marking for available bit rate (ABR) service support.
Guaranteed frame rate (GFR).
Tree or daisy chain configurations for DS3 subtended Cisco 6130 chassis.
Daisy chain configurations for OC-3c subtended Cisco 6130 chassis.
Fair access to the trunk port for each subtended chassis.
A network trunk port that operates as fast as any subtended link.
The NI-2 card provides three types of subtended network connections:
A DS3 ATM interface
A high-speed OC-3c optical ATM interface that supports single-mode fiber (SMF) intermediate range
A high-speed OC-3c optical ATM interface that supports multimode fiber (MMF) short range
The following sections detail the three types of subtending network connections.
Subtended Network Configuration with DS3/2DS3 NI-2 Cards
In a subtended network configuration using DS3/2DS3 NI-2 cards, you can subtend a Cisco 6130 chassis to four tiers, with up to twelve chassis, all connecting through one subtending host chassis to the ATM backbone.
Figure 1-3 shows typical DS3-configured Cisco 6130 systems subtended in a combined subtending tree topology with daisy chain. The subtending host chassis at the top of the subtending tree connects directly to the ATM switch. The middle two Cisco 6130 chassis in the lowest level are daisy chained. TRNK 1 refers to the single network trunk or to the Cisco 6130 subtended network interface. SBTD 2 and SBTD 3 refer to the two Cisco 6130 chassis subtended interfaces. You make network interface connections at the system I/O card that is installed on the Cisco 6130 backplane.
Figure 1-3 Subtended Network Configuration Using DS3/2DS3 NI-2 Cards
Note You can subtend Cisco 6130 chassis with DS3/2DS3 NI-2 cards in a continuous daisy chain. However,
this subtending scheme is not optimal for data throughput for Cisco 6130 chassis that use DS3/2DS3
NI-2 cards.
Cisco IOS software does not manage the primary Cisco 6130 chassis and all subtended Cisco 6130 chassis as a single large Cisco 6130 with NI-2 system. Each Cisco 6130 supports an independent Cisco IOS processor and Management Information Base (MIB).
Subtended Network Configuration with OC-3c/OC-3c NI-2 Cards
In a subtended network configuration using OC-3c/OC-3c NI-2 cards (SMF or MMF), you can subtend up to twelve OC-3c configured chassis in a daisy chain, all connecting through one subtending host chassis to the ATM backbone (see Figure 1-4).
Figure 1-4 Subtended Network Configuration Using OC-3c/OC-3c NI-2 Cards
Cisco 6130 Chassis Overview
The Cisco 6130 chassis uses a 32-slot multiport line card architecture capable of supporting up to 128 ADSL/SDSL ports that are connected either directly or through a POTS splitter.
The card compartment holds all circuitry that relates to the Cisco 6130 with NI-2 system operation. The card compartment contains 38 slots. Table 1-1 describes each card slot assignment for the Cisco 6130.
Table 1-1 Cisco 6130 Card Slot Assignments
Card Slot
Card Assignment
1 to 8
4xDMTs, 4xflexis, or 4xSDSLs1
9
Blank faceplate2
10
NI-2 card (primary)
11
NI-2 card (secondary) or blank faceplate2
12
Blank faceplate2
13 to 20
4xDMT, 4xflexi, or 4xSDSLs1
21 to 28
4xDMT, 4xflexi, or 4xSDSLs1
29 and 30
Blank faceplates2
31 to 38
4xDMT, 4xflexi, or 4xSDSLs1
14xSDSLs can only be used in a Cisco 6130 without a POTS splitter configuration.
2Blank faceplates must be installed in all open slots of each chassis.
Note You can purchase blank faceplates for empty Cisco 6130 card slots.
Figure 1-5 identifies the Cisco 6130 card slots. Each slot on a chassis is numbered along the top of the chassis. In this guide, the slot numbers are shown on the cards for easy reference and readability. These slots are referred to in subsequent sections of this chapter and elsewhere in this guide.
NoteFigure 1-5 shows the Cisco 6130 without
the required front cover installed. The front cover must be installed while the Cisco 6130 with NI-2
system is in operation.
Note To determine if you have a Cisco 6130, locate the Cisco 6130
label on the upper right corner of either the chassis or the front cover of the chassis. Another
way to determine if you have a Cisco 6130 is to locate the J49 connector on the backplane.
The Cisco 6100 backplane does not have this connector.
Figure 1-6 Cisco 6130 Backplane
Table 1-2 describes the connectors and switches on the Cisco 6130 backplane.
Table 1-2 Cisco 6130 Backplane Connectors and Switches
Identifier
Name
Description
J45
—
Not in use.
J46
—
Not in use.
J47
—
Not in use.
J48
—
Not in use.
J49
Fan Tray Connection
26-pin SCSI connector used to connect the fan tray to the Cisco 6130 chassis.
J39, J40, J41, J42, J43, J44
Data
Six 50-pin Champ connectors used to transfer data between the Cisco 6130 chassis and the POTS splitter in a Cisco 6130 with a POTS splitter configuration. In a Cisco 6130 without a POTS splitter configuration, the connectors are used to transfer data between the Cisco 6130 chassis and the CPE equipment.
P9, P3
System I/O card
Two 2-mm HM1 modular connectors (male on the Cisco 6130 backplane and female on the system I/O card) used to connect the system I/O card.
P13
Power
A terminal block connector with four dual-power connections (-48V_A, -48V_B, and two -48RTN2).
P14, P15, P17
—
Not in use.
P18
Analog test input
A 2-position header for connecting external xDSL test equipment.
The Cisco 6130 supports restricted line card intermixing. You can intermix only the 4xflexi (CAP mode) and the 4xflexi (DMT mode) in the same chassis half. The left half of the chassis comprises slots 1 to 8 and 21 to 28; the right half comprises slots 13 to 20 and 31 to 38. The line card intermixing configurations that are supported in a Cisco 6130 chassis are
4xflexi (CAP mode) and 4xflexi (DMT mode)
4xflexi (CAP mode) and 4xSDSL (used in a Cisco 6130 without POTS splitter configuration only)
4xflexi (DMT mode) and 4xSDSL (used in a Cisco 6130 without POTS splitter configuration only)
Caution Other line card intermixing configurations are not currently supported. Mixing incompatible line cards can cause unpredictable system behavior.
4xDMT Overview
The 4xDMT
Supports four ADSL modem connections.
Converts ADSL modulation from the line into digital data streams to and from the NI-2 card.
Negotiates the line rate with the CPE when it trains and bases the rate on line quality and distance.
If provisioned, the 4xDMT rate adapts to the maximum bit rate negotiable on the line. The maximum bit rate settings are provisioned in the management software.
If provisioned, the 4xflexi rate adapts to the maximum bit rate negotiable on the line. The maximum bit rate settings are provisioned in the management software.
The Cisco 6130 system can include up to 32 4xflexis for a total of 128 ADSL modem connections.
Edge Connector Key
The edge connector key, located on the rear of the 4xflexi, connects the 4xflexi to the backplane of the chassis. There are two edge connector keys available for the 4xflexi: one has six notches and one has seven notches. You can use both versions in the Cisco 6130 with NI-2 system. Figure 1-8 shows the edge connector key with seven notches.
Note The 4xSDSL card also features the edge connector key.
Figure 1-8 Edge Connector Key
Faceplate Features
The following fixtures are present on the front of the 4xflexi faceplate:
Locking lever and locking tab
LEDs
STATUS
ACTIVE
CAP
DMT
G.LITE
Four port (A1 through A4)
Extraction tab
Figure 1-9 shows a close-up of the 4xflexi faceplate.
Figure 1-9 4xflexi Faceplate
Table 1-5 describes the 4xflexi LED indicator functions.
Table 1-5 4xflexi LED Indicators
LED
State
Function
STATUS
Green slow blinking
The self-test is in progress.
Green fast blinking
The image download is in progress.
Green solid
The status is OK.
Red
The self-test or line card has failed.
Off
The ATU-C line card has a power failure.
ACTIVE
Green solid
The line card is activated.
Off
The line card is not in service.
CAP
Green solid
The line card is in CAP mode.
Off
The line card is not in CAP mode.
DMT
Green solid
The line card is in DMT mode.
Off
The line card is not in DMT mode.
G.LITE
Green solid
The line card is in G.lite mode.
Off
The line card is not in G.lite mode.
A1
Green solid
Modem 1 is trained.
Green blinking
Training is in progress for modem 1.
Off
Modem 1 is idle.
A2
Green solid
Modem 2 is trained.
Green blinking
Training is in progress for modem 2.
Off
Modem 2 is idle.
A3
Green solid
Modem 3 is trained.
Green blinking
Training is in progress for modem 3.
Off
Modem 3 is idle.
A4
Green solid
Modem 4 is trained.
Green blinking
Training is in progress for modem 4.
Off
Modem 4 is idle.
4xSDSL Overview
The 4xSDSL
Supports 2B1Q line encoding.
Is designed for use in a Cisco 6130 without a POTS splitter configuration.
Supports four SDSL modem connections.
Converts SDSL modulation from the line into digital data streams to and from the NI-2 card.
The chassis can include up to 32 4xSDSLs for a total of 128 SDSL modems.
Edge Connector Key
The edge connector key, located on the rear of the 4xSDSL, connects the 4xSDSL to the backplane of the chassis. There are two edge connector keys available for the 4xSDSL: one has six notches, and the other has seven notches. You can use both versions in the Cisco 6130 with NI-2 system. Figure 1-8 shows the edge connector key with seven notches.
Faceplate Features
The following fixtures are present on the front of the 4xSDSL faceplate:
Locking lever and locking tab
LEDs
STATUS
ACTIVE
Four port (STU-C1 through STU-C4)
Extraction tab
Figure 1-10 shows a close-up of the 4xSDSL faceplate.
Figure 1-10 4xSDSL Faceplate
Table 1-6 describes the 4xSDSL LED indicator functions.
Table 1-6 4xSDSL LED Indicators
LED
State
Function
STATUS
Green slow blinking
The self-test is in progress.
Green fast blinking
The image download is in progress.
Green solid
The status is OK.
Red
The self-test or line card has failed.
Off
The ATU-C line card has a power failure.
ACTIVE
Green solid
The line card is activated.
Off
The line card is not in service.
STU-C 1
Green solid
Modem 1 is trained.
Green blinking
Training is in progress for modem 1.
Off
Modem 1 is idle.
STU-C 2
Green solid
Modem 2 is trained.
Green blinking
Training is in progress for modem 2.
Off
Modem 2 is idle.
STU-C 3
Green solid
Modem 3 is trained.
Green blinking
Training is in progress for modem 3.
Off
Modem 3 is idle.
STU-C 4
Green solid
Modem 4 is trained.
Green blinking
Training is in progress for modem 4.
Off
Modem 4 is idle.
DS3/2DS3 NI-2 Card Overview
The DS3/2DS3 NI-2 card
Connects to the xTU-C line cards through point-to-point serial data buses on the backplane
Controls timing and redundancy
Provides CO facility alarm relay contact interfaces and an alarm cut-off (ACO) button
Provides visual and audible operating status alerts
Contains the ATM switch fabric
Provides the network DS3 WAN trunk interface through BNC connectors located on the system I/O card
Provides two DS3 subtend interfaces through BNC connectors located on the system I/O card
Supports the aggregation of up to 12 subtended node chassis that are configured for DS3 operation in a tree topology
Supports NI-2 card cold redundancy
Provides Cisco IOS-based ATM Quality of Service (QoS).
The DS3/2DS3 NI-2 card functions are managed by Cisco IOS software. The Cisco IOS software operates and integrates controller, network trunk, and subtending functions from this single card, which occupies slot 10, slot 11, or both in a Cisco 6130 chassis.
Figure 1-11 shows a close-up of the DS3/2DS3 NI-2 card faceplate.
Figure 1-11 DS3/2DS3 NI-2 Card Faceplate
The following fixtures are present on the front of the DS3/2DS3 NI-2 card faceplate, as noted in Figure 1-11:
Two locking levers with locking tabs.
An ACO button and a maintenance RESET port located at the top of the faceplate.
Three interface status LED groups, Trunk 1 (TRNK 1), Subtend 2 (SBTD 2), and Subtend 3 (SBTD 3), located on the left side of the card faceplate. These interface status LED groups monitor the trunk and subtend connections on the system I/O card or I/O module.
Table 1-7 describes the interface status LED group indicators and their functions.
Table 1-7 Interface Status LED Group Indicators
LED
State
Function
TEST
Amber solid
Cisco IOS detects that an obtrusive test (loopback) is active on this interface.
Off
Cisco IOS does not detect obtrusive test activity.
RX STAT
Amber solid
The receiver detects a physical layer problem.
Off
The receiver does not detect a physical layer problem.
TX STAT
Amber solid
The transmitter detects a physical layer problem.
Off
The transmitter does not detect a physical layer problem.
RCLK
Green solid
Hardware detects an incoming clock signal.
Off
Hardware does not detect an incoming clock signal.
Three alarm status LED groups located on the right side of the NI-2 card faceplate.
System alarm LED group
Card status LED group
Fan alarm LED group
Table 1-8 describes the alarm status LED group indicators and their functions.
Table 1-8 Alarm Status LED Group Indicators
LED Group
LED
State
Function
System Alarm
CRITICAL
Red
When this LED is lit, a critical alarm is active.
MAJOR
Red
When this LED is lit, a major alarm is active.
MINOR
Amber
When this LED is lit, a minor alarm is active.
Card Status
POWER
Green
When this LED is lit, the NI-2 card has power.
STATUS
Green
This LED indicates the operational status of the NI-2 card:
When the LED is lit, there are no internal faults or problems.
When the LED is not lit, the NI-2 card has not booted properly, or a problem is preventing normal operation.
ACTIVE
Green
When lit, this LED indicates which NI-2 card is operating as the active network interface in the chassis.
Fan Alarm
FAN 1
—
This LED on the NI-2 card is inactive and always off. The fan status LED indicators are on the fan tray.
FAN 2
—
This LED on the NI-2 card is inactive and always off. The fan status LED indicators are on the fan tray.
Three operating system interface and internet ports located on the right side of the NI-2 card faceplate.
CNSL—An RJ-45 receptacle that provides a serial connection to a system console.
AUX—An RJ-45 receptacle that provides connection to an auxiliary device (such as a modem) used to remotely configure the system.
ENET—An RJ-45 10BaseT receptacle that complies with Ethernet standards and that provides connection to a system Ethernet. The ENET interface has two LEDs: ACT to indicate activity status and LNK to indicate link status. Table 1-9 describes the ENET interface LED indicators and their functions.
Table 1-9 ENET Interface LED Indicators
LED
State
Function
ACT
Green solid or blinking
When the LED is lit or blinking, the Ethernet interface is active.
Off
When the LED is unlit, the Ethernet interface is inactive.
LNK
Green solid
When the LED is lit, the Ethernet link is active.
OC-3c/OC-3c NI-2 Card Overview
The OC-3c/OC-3c NI-2 card
Connects to the xTU-C line cards through point-to-point serial data buses on the backplane
Controls timing and redundancy
Provides CO facility alarm relay contact interfaces and an ACO button
Provides visual and audible operating status alerts
Contains the ATM switch fabric
Provides the network OC-3c WAN trunk interface through connectors located on the NI-2 card faceplate. The following two versions of the OC-3c/OC-3c NI-2 card are available to support the WAN trunk interface:
SMF intermediate range
MMF short range
Provides an OC-3c subtend interface through optical connectors located on the NI-2 card faceplate.
Supports the aggregation of up to 12 subtended node chassis that are configured for OC-3c operation in a daisy-chain topology
Supports NI-2 card cold redundancy
Supports APS link redundancy
Provides Cisco IOS-based ATM Quality of Service (QoS)
Figure 1-12 shows a close-up of the OC-3c/OC-3c NI-2 card faceplate.
Figure 1-12 OC-3c/OC-3c NI-2 Card Faceplate
1
Ejector lever.
7
Model number
2
Locking tab.
8
System alarm LED group.
3
ACO button.
9
Card status LED group.
4
Maintenance RESET port.
10
Fan alarm LED group.
5
Interface status LED groups: Trunk 1 (TRNK 1) and Subtend 2 (SBTD 2). These groups show the status of the trunk and subtend connections.
11
CNSL—An RJ-45 receptacle that provides a serial connection to a system console.
6
Two optical interface connector pairs: Trunk 1 (TRNK 1) and Subtend 2 (SBTD 2)
TRNK 1—This connector pair is for network trunk interface TX and RX data optical cables. On a subtended node chassis, these network trunk interface TX and RX cables connect to SBTD 2 on the subtending host chassis.
SBTD 2—This connector pair is for subtended node chassis TX and RX data optical cables.
12
AUX—An RJ-45 receptacle that provides connection to an auxiliary device (such as a modem) used to remotely configure the system.
13
ENET—An RJ-45 10BaseT receptacle that complies with Ethernet standards and that provides connection to a system Ethernet.
Table 1-10 describes the LED group indicators and their functions.
Table 1-10 OC-3c/OC-3c NI-2 Card LED Group Indicators
The NI-2 card receives its network timing signal from any one of the following sources:
A building integrated timing supply (BITS) clock. When a BITS clock serves as the network timing signal source, the Cisco 6130 chassis receives a clock signal through designated pins on the system I/O card and distributes the signal through the chassis backplane.
An internal clock.
A DS3 or OC-3c network trunk interface. An NI-2 card synchronizes with the network timing source and provides a clock reference signal to line cards in the chassis and to subtended node chassis.
The active NI-2 card supplies a redundant pair of clock signals to all cards in the chassis. This same clock reference can be propagated to subtend systems via the trunk and subtended interface ports. This is done by configuring the subtending port of the root system to source the network-derived clock. The trunk port of the subtended system is configured as the network clock source for that chassis. This chain continues down the subtended tree.
Redundancy Overview
Redundancy is available for the Cisco 6130 system. The following forms of redundancy are available:
NI-2 card cold redundancy, which allows a standby NI-2 card to take over system operations in the event of a complete failure of the active NI-2 card.
APS link redundancy, which provides recovery from a cut fiber or the failure of an OC-3c optical transmitter or optical receiver interface on an NI-2 card. APS link redundancy is available on OC-3c/2DS3 NI-2 card trunk interfaces and OC-3c/OC-3c NI-2 card trunk and subtend interfaces.
Note Line card redundancy is not currently supported.
NI-2 Card Cold Redundancy
NI-2 card cold redundancy requires that two NI-2 cards be installed in the chassis. The primary card is installed in slot 10 of the chassis, and the secondary card is installed in slot 11. Either the primary or the secondary NI-2 card can serve as the active NI-2 card. The interface types must be the same for both the primary and secondary NI-2 cards.
In a Cisco 6130 system, NI-2 card cold redundancy is supported by DS3/2DS3, OC-3c/OC-3c SMF, and OC-3c/OC-3c MMF NI-2 cards.
During steady-state operations, one NI-2 card functions as the active unit, and the other functions as the standby unit. The active NI-2 card displays a green ACTIVE LED. In an active state, the NI-2 card
Has full Ethernet, auxiliary port, and console access
Communicates with line cards
Has full access to the environmental monitoring subsystem
Has access to the optical interfaces on the standby NI-2 card
Allows remote access to the file system of the standby NI-2 card
The standby NI-2 card plays a minimal role during steady-state operations. In a standby state, the NI-2 card
Receives configuration changes from the active NI-2 card (when the cards are configured for synchronization)
Has no Ethernet, auxiliary port, or console access
Does not communicate with line cards
Has no access to the environmental monitoring subsystem
Generates only APS alarms, which are reported via the active card
For management purposes, the primary and secondary NI-2 cards appear as one element. The cards share one IP address.
Note For information on NI-2 card cold redundancy switchover conditions, refer to the Upgrading DSLAMs
for NI-2 Card and APS Link Redundancy document.
APS Link Redundancy
APS link redundancy provides recovery from a cut fiber or the failure of an OC-3c optical transmitter or receiver interface on an NI-2 card. In a Cisco 6130 system, APS link redundancy is available on OC-3c/OC-3c NI-2 card trunk and subtend interfaces.
The working link is the fiber connection between the primary NI-2 card installed in slot 10 of the chassis and the ATM switch. The protection link is the fiber connection between the secondary NI-2 card installed in slot 11 of the chassis and the ATM switch. When the fiber or optical ports on the active NI-2 card fail, that card remains active but is able to use the fiber or optical ports on the standby NI-2 card.
APS protocol information is carried over the protection link connected to the secondary NI-2 card in slot 11. The standby NI-2 card continually reports synchronous optical network (SONET) state information to the active NI-2 card.
APS link redundancy is nonrevertive. For example, after a switchover from the working to the protective link occurs, the active NI-2 card will switch back to the working fiber only if manually forced through a CLI command or if a failure condition occurs on the protection link. However, if a failure condition occurs on the protection link while the working link is still in a failed state, a switch back to the working link will not occur.
Note For information on APS link redundancy switchover conditions, refer to the Upgrading DSLAMs for
NI-2 Card and APS Link Redundancy document.
Redundancy in Subtended Configurations
In Cisco 6130 subtending configurations, NI-2 card redundancy is supported in a DS3 subtend tree or in an OC-3c subtend daisy-chain if both the subtending host chassis and the subtended node chassis have primary and secondary NI-2 cards installed. An NI-2 card failure on a node in a subtend tree or daisy-chain temporarily interrupts traffic to all subtended node chassis.
APS link redundancy is supported on optical interfaces in Cisco 6130 subtending configurations if the subtending host chassis has a secondary (redundant) OC-3c/OC-3c NI-2 card installed.
System I/O Card
A system I/O card
Provides transmit and receive Bayonet-Neill-Concelman (BNC) coaxial cable connections for interfacing with one DS3 network connection and up to two subtended node chassis that use DS3/2DS3 NI-2 cards.
Provides relays and contact wire-wrap pins for dedicated CO facility operating alarms (DS3 or OC-3c systems) that are operated by Cisco IOS software
Provides the BITS clock
The system I/O card attaches to the two 2-mm HM card connectors, P3 and P9, on the Cisco 6130 backplane.
Figure 1-13 shows the location of the system I/O card on the chassis backplane.
Figure 1-13 System I/O Card Locations
Figure 1-14 shows a close-up of the system I/O card.
Figure 1-14 System I/O Card
Table 1-11 describes the connectors and headers on the system I/O card.
Table 1-11 System I/O Card Connectors and Headers
Identifier
Name
Description
J4, J8
DS3 subtend (RX)
A 75-ohm BNC connector that is used to connect a subtending host chassis to a DS3-configured subtended node chassis TX connector.
J6, J10
DS3 subtend (TX)
A 75-ohm BNC connector that is used to connect a subtending host chassis to a DS3-configured subtended node chassis RX connector.
J12
DS3 trunk I/O (RX)
A 75-ohm BNC connector that is used to connect the trunk network RX coaxial cable or used to connect a subtending host chassis to a DS3-configured subtended node chassis TX connector.
J14
DS3 trunk I/O (TX)
A 75-ohm BNC connector that is used to connect the trunk network TX coaxial cable or used to connect a subtending host chassis to a DS3-configured subtended node chassis RX connector.
P1
Alarm wire-wrap header1
Pin 1 (left)—AUD2_CRIT3_CO4
Pin 2—AUD_CRIT_NO5
Pin 3—AUD_CRIT_NC6
Pin 4—AUD_MAJ7_CO
Pin 5—AUD_MAJ_NO
Pin 6 (right)—AUD_MAJ_NC
P2
Alarm wire-wrap header1
Pin 1 (left)—AUD_MIN8_CO
Pin 2—AUD_MIN_NO
Pin 3—AUD_MIN_NC
Pin 4—VIS9_CRIT_CO
Pin 5—VIS_CRIT_NO
Pin 6 (right)—VIS_CRIT_NC
P3
Alarm wire-wrap header1
Pin 1 (left)—VIS_MAJ_CO
Pin 2—VIS_MAJ_NO
Pin 3—VIS_MAJ_NC
Pin 4—VIS_MIN_CO
Pin 5—VIS_MIN_NO
Pin 6 (right)—VIS_MIN_NC
P4
Alarm wire-wrap header1
Pin 1 (left)—DOOR ALARM
Pin 2—Reserved
Pin 3—Reserved
Pin 4—Reserved
Pin 5—ACO10_NO
Pin 6 (right)—ACO GND11
P5
Alarm wire-wrap header1
Pin 1 (left)—RX_BITS12_TIPA
Pin 2—RX_BITS_RINGA
Pin 3—RX_BITS_GND/GND
Pin 4—RX_BITS_TIPB
Pin 5—RX_BITS_RINGB
Pin 6 (right)—RX_BITS_GND/GND
K1, K2, K3, K4, K5, K6
Audible and visual alarm relays
Not in use.
1Each wire-wrap header is connected to a relay contact on the active NI-2 card in the Cisco 6130 chassis through the system I/O card connectors.
An EMI shield is formed by the EMI fence, which is soldered in place on the system I/O card, and the EMI cover (see Figure 1-14). Printed circuit board fuses, relays, and surge protectors are shielded by two clear plastic covers: a safety shield and an ESD shield. The EMI cover and protective shields must be in place during Cisco 6130 with NI-2 system operation.
Front Cover
The Cisco 6130 chassis ships with a front cover that must be installed and in place while the system is in operation, as shown in Figure 1-15.
Figure 1-15 Cisco 6130 Front Cover Installation
Rear Cover
You can order and install an optional rear cover and accessory kit for the Cisco 6130 chassis. The rear cover attaches to the back of the Cisco 6130 chassis and restricts access to the backplane and cable connectors. To keep cables from interfering with the opening of the rear cover, the cables that come down from the top of the rack can be tie wrapped to the cover-mounting brackets.
The rear cover accessory kit contains
1 cover-mounting bracket (detached)
1 cover-mounting bracket (with the rear cover attached)
10 tie wraps
6 standoff screws
Fan Tray
The system requires forced air cooling when you use a Cisco 6130 chassis. Therefore, you must install a fan tray with three fan modules below the chassis and leave 1 rack unit (RU) of space below the fan tray for intake plenum. Figure 1-16 shows the front view of the fan tray.
Figure 1-16 Fan Tray
Note The fan tray must be bolted into the rack and connected to the chassis. If you are using multiple
Cisco 6130 chassis in your configuration, a fan tray must be installed under each chassis.
An LED is located on the front of each of the three fan modules. If the LED is
Green—The fan module is operational.
Not green—The fan module is not operational and the fan tray is in alarm mode. See "Troubleshooting," for corrective action.
Table 1-12 describes the connectors on the backplane of the fan tray.
Table 1-12 Fan Tray Backplane Connectors
Identifier
Name
Description
P1
Power
Terminal block connector with four dual power input connections (-48VA, -48VB, and two -48VB RTN).
P2
—
A two-position header providing connections for fan tray alarm contacts.
Not in use.
J1
Alarm
26-pin SCSI connector used to connect the fan tray to the Cisco 6130 chassis.
Cisco 6120 POTS Splitter Overview
The Cisco 6120 POTS splitter is a device that separates voice frequencies from DSL signals. It is used to allow POTS service to continue over communication lines accessed by DSL equipment such as the Cisco 6130 chassis. POTS frequencies are sent to the voice switch and xDSL frequencies are routed to the ATU-C line cards, depending on the configuration you install. The Cisco 6120 is electrically passive. Therefore, a complete loss of power to the Cisco 6130 with NI-2 system does not affect voice transport to the Public Switched Telephone Network (PSTN).
To colocate voice-switching equipment through the CO MDF, use separate 50-pin Champ connectors to cable to POTS signals. Special cables are required for this connection. Obtain these cables from Cisco, or build the cables according to a standard, accepted cable specification, for example, the Nortel NT-T100 series cable specification. For more information on the required cables, see "Cable and Port Mapping Specifications."
Note Refer to the appropriate vendor documentation for information on the third-party POTS splitter.
Cisco 6120 Card Compartment
The card compartment includes 22 slots. Table 1-13 describes each card slot assignment for the Cisco 6120.
Table 1-13 Cisco 6120 Card Slot Assignments
Card Slot
Card Assignment
1 to 10
DMT POTS cards only
11
Blank faceplate1
12
Screwed-down faceplate
13 to 22
DMTPOTS cards only
1Blank faceplates must be installed in all open slots of each chassis.
Note You can purchase blank faceplates for empty Cisco 6120 card slots.
Figure 1-18 identifies the Cisco 6120 card slots. Each slot on a chassis is numbered along the top of the chassis. In this guide, the slot numbers are shown on the cards for easy reference and readability. These slots are referred to in subsequent sections of this chapter and elsewhere in this guide.
Figure 1-18 Cisco 6120 Card Slots
Cisco 6120 Backplane
Figure 1-19 shows the backplane of the Cisco 6120.
Figure 1-19 Cisco 6120 Backplane
Table 1-14 describes the connectors on the backplane of the Cisco 6120.
Table 1-14 Cisco 6120 Backplane Connectors
Identifier
Connector
Description
J1 through J6
—
Six 50-position Champ connectors for connection to the Cisco 6130 chassis.
J7 through J10
Voice
Four 50-position Champ connectors for connection to external voice terminating equipment.
J11 through J14
Line
Four 50-position Champ connectors for incoming xDSL voice/data connections.
J36
—
One 9-pin D-sub connector reserved for future use.
Figure 1-20 shows the location of the Cisco 6120 data, voice, and line connections.
Figure 1-20 Cisco 6120 Connections
Cisco 6120 Cards
The DMT POTS card separates ADSL data from the POTS signals.
Note The Cisco 6130 with a POTS splitter configuration will support the 8 kHz
DMT POTS card.
You can provision and manage the Cisco 6130 with NI-2 system through the following management software:
Cisco IOS—A CLI that is available for network element provisioning.
CDM—A GUI designed to configure and manage the 6xxx series of Cisco IOS software-based DSLAMs. CDM provides the following areas of network management—fault, configuration, performance, and security. CDM runs with the Cisco EMF; both are installed on Sun workstations.
Cisco EMF is based on an object model in which network elements or modules represent the managed entity. Each object is defined by a class and specific attributes. An object can represent a network element or a more abstract entity such as a link relationship, a network, or a container such as a site, shelf, or region.
Note If your network contains multiple Sun workstations, you must dedicate one workstation as the
server and all additional workstations as clients. The server should be the repository and
distributor of database information from which the clients request information. The client
workstations allow multiple users to monitor the managed network.
The supported alarms that are generated by the management software are
CRITICAL—A critical visual alarm condition is indicated when the CRITICAL LED in the NI-2 card faceplate lights.
When a critical alarm occurs, the critical visual and audible alarm relays are activated.
A critical alarm affects many or all subscribers that are connected to the node (for example, failure of the NI-2 card or the trunk can cause a critical alarm).
Critical alarms clear after you fix the condition that triggered the alarm.
Audible alarms are turned off when you press the ACO button on the NI-2 card faceplate.
MAJOR—A major visual alarm condition is indicated when the MAJOR LED in the NI-2 card faceplate lights.
When a major alarm occurs, the major visual and audible alarm relays are also activated.
Several subscribers that are connected to the node are affected.
Major alarms clear after you fix the condition that triggered the alarm.
Audible alarms are turned off when you press the ACO button on the NI-2 card faceplate.
MINOR—A minor visual alarm condition is indicated when the MINOR LED in the NI-2 card faceplate lights.
When a minor alarm occurs, the minor visual and audible alarm relays are also activated.
A small number of subscribers that are connected to the node are affected.
Minor alarms clear after you fix the condition that triggered the alarm.
Audible alarms are turned off when you press the ACO button on the NI-2 card faceplate.
Visual and audible alarm relay contacts can be wired from the Cisco 6130 chassis to CO alarm devices (remote lights or bells) located anywhere within the facility.
The visual and audible alarm relays are located on the system I/O card, but the NI-2 card hardware operates them. The visual alarms clear after you fix the problem that triggered the alarm. The audible alarms can be disabled by pressing the ACO button on the NI-2 card or clearing the alarm in the Cisco IOS software.
For more information on alarms that are generated in the management software, see "Troubleshooting."
