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Table Of Contents
1.1 Introduction to the Cisco 6160 System
1.2 Cisco 6160 Chassis Overview
1.2.2 Chassis Card Compartment
Product Overview
This chapter provides an overview of the Cisco 6160 digital subscriber line (DSL) access multiplexer (DSLAM) and its related components, collectively known as the Cisco 6160 system. This chapter contains the following sections:
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Introduction to the Cisco 6160 System
1.1 Introduction to the Cisco 6160 System
The Cisco 6160 system is part of the Cisco DSL product family that provides end-to-end service by carrying voice or data traffic, or both, between a subscriber's home or office, a central office (CO), and various networks beyond. The Cisco 6160 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. Data is modulated by xDSL customer premises equipment (CPE) devices, which are connected to PCs or routers at the subscriber site. The data then travels over telephone lines to the Cisco 6160 system at the CO.
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The Cisco 6160 system uses asymmetric digital subscriber line (ADSL), ISDN digital subscriber line (IDSL), symmetrical digital subscriber line (SDSL), and single-pair high-speed digital subscriber line (SHDSL, also known as G.SHDSL), collectively known as xDSL, technologies to support up to 256 subscribers connected either directly to the chassis or through a plain old telephone service (POTS) splitter. Filters separate voice and data signals when subscribers are connected to the Cisco 6160 DSLAM through a POTS splitter chassis. Cables connected to the POTS splitter route digital data signals to line cards in the Cisco 6160 chassis and voice signals to the CO facility switching network.
The Cisco 6160 system includes the following hardware and software components:
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Figure 1-1 shows the location of the Cisco 6160 chassis components.
Figure 1-1 Cisco 6160 Chassis Components
Air filter
NI-2 card (primary and secondary)
xTU-C line cards (slots 1 to 9 and 12 through 34)
Secondary PEM
Blower tray
Primary PEM
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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.
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1.1.1 Features
The Cisco 6160 system includes the following features:
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1.1.2 Configurations
This guide details the installation steps for the following configurations:
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1.1.2.1 Cisco 6160 with a POTS Splitter Configuration
The Cisco 6160 with a POTS splitter configuration supports up to 256 data subscribers through directly connected modems using xDSL technology. To increase subscribership, you can add additional chassis to your system.
This configuration can include the following hardware components:
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1.1.2.2 Cisco 6160 Without a POTS Splitter Configuration
The Cisco 6160 without a POTS splitter configuration supports up to 256 data subscribers through directly connected modems using xDSL technology. To increase subscribership, you can add additional chassis to your system.
This configuration can include the following hardware components:
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1.1.2.3 IMA Configuration
The DS3+T1/E1 IMA NI-2 card uses IMA technology to aggregate multiple low-speed links into one larger virtual trunk or IMA group. An inverse multiplexer appears to your ATM switch router as one logical pipe. IMA provides you with modular bandwidth to access the ATM network between T1 and DS3 rates. The Cisco 6160 allows you to combine up to eight T1 lines to form an IMA group.
IMA breaks up the ATM cell stream, distributes the cells over the multiple physical links of an IMA group, then recombines the cells into a single stream at the other end of the connection. The ATM cells are distributed in a round-robin fashion over the physical links of the IMA group, recombined at the receiving IMA group, and passed in their original form to the ATM layer (see Figure 1-2). Using the multiple links of an IMA group increases the logical link bandwidth to approximately the sum of the individual link rates. The physical links should be nominally the same length to avoid excessive intragroup delay. We recommend that all of the links in an IMA group be bundled together between the source and the destination.
Figure 1-2 Inverse Multiplexing and Recombining of ATM Cells Through IMA Groups
The DS3/2DS3+8xT1 IMA I/O cards have eight ports. You can use the eight ports on the DS3/2DS3+8xT1 IMA I/O cards as independent ATM links or in the IMA mode. The following bullets are examples of possible IMA groups, independent ATM links, and mixed modes. In examples of IMA groups, two links are assumed per group.
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The T1 (1.544 Mbps) IMA port adapters provide trunk or subtend connectivity and are used for intercampus or wide-area links. The T1 IMA port adapters support unshielded twisted-pair (UTP) connectors. The order of assignment of links to an IMA group is not restricted.
The IMA group interfaces use a naming convention different from those used by the other interfaces in the system. IMA group interfaces are named with the convention atm<slot>/ima<group>, where <slot> is the slot number for the DS3+T1/E1 IMA NI-2 card and <group> is the IMA group number from 0 to 3. Table 1-1 lists the interface naming conventions.
1.1.2.4 Subtended Network Configuration
A subtended network configuration
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The term subtending refers to the host chassis, and subtended refers to the downstream chassis in a subtended network.
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A subtended network configuration supports the following features:
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The NI-2 card provides one of the following types of subtended network connections:
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The following sections detail the different types of subtended network configurations:
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1.1.2.4.1 Subtended Network Configuration with DS3+T1/E1 IMA NI-2 Cards
In a subtended network configuration using DS3+T1/E1 IMA NI-2 cards, you can subtend Cisco 6160 systems with the following network configurations:
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Figure 1-3 shows an example of a subtended network with a star topology. The subtending host chassis in the middle of the star topology connects directly to the ATM switch. With a DS3 trunk, you can have up to eight subtended node chassis connected to the subtending host chassis.
Figure 1-3 Subtended Network Configuration Using DS3+T1/E1 IMA NI-2 Cards
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1.1.2.4.2 Subtended Network Configuration with DS3/2DS3 or OC-3c/2DS3 NI-2 Cards
In a subtended network configuration using DS3/2DS3 or OC-3c/2DS3 NI-2 cards, you can subtend a Cisco 6160 chassis to four tiers, with up to 12 subtended node chassis, all connecting through one subtending host chassis to the ATM backbone.
Figure 1-4 shows DS3-configured Cisco 6160 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 6160 chassis in the lowest level are daisy chained. TRNK 1 refers to the network trunk or the Cisco 6160 chassis subtended network interface. SBTD 2 and SBTD 3 refer to the two Cisco 6160 chassis subtended interfaces. You make network interface connections at the I/O card, which is installed on the Cisco 6160 chassis backplane.
Figure 1-4 Subtended Network Configuration Using DS3/2DS3 or OC-3c/2DS3 NI-2 Cards
For each chassis in a subtended network configuration to have fair access to the shared trunk, the chassis must have a unique ID number. The subtending host chassis places this ID number in the GFC field of the ATM header of each cell; this ID number is then used to forward cells up the tree to the network trunk.
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Cisco IOS software does not manage the primary Cisco 6160 chassis and all subtended Cisco 6160 chassis as a single large Cisco 6160 system. Each Cisco 6160 chassis supports an independent Cisco IOS processor and MIBs.
1.1.2.4.3 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 12 OC-3c configured subtended node chassis in a daisy chain, all connecting through one subtending host chassis to the ATM backbone (see Figure 1-5).
Figure 1-5 Subtended Network Configuration Using OC-3c/OC-3c NI-2 Cards
1.2 Cisco 6160 Chassis Overview
The Cisco 6160 system consists of circuitry and connections that reside within a chassis, an enclosure that allows modular insertion and removal of various field-replaceable units (FRUs).
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The following sections detail these Cisco 6160 hardware components:
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1.2.1 Backplane
Located on the back of the Cisco 6160 chassis, the backplane provides the following services:
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Figure 1-6 shows the Cisco 6160 backplane.
Figure 1-6 Cisco 6160 Backplane
PWR 1—Power terminal block connector.
Connectors JC1 through JC5.
BRKR 1—A terminal block connector used to wire alarm relays to external alarms.
I/O card connectors (P3 and P9)—Two 2-mm HM1 modular connectors (male on the Cisco 6160 and female on the I/O card) are used to connect the I/O card.
PWR 2—Power terminal block connector. Use if a secondary (redundant) PEM is installed.
Connectors JC6 through JC11.
BRKR 2—A terminal block connector used to wire alarm relays to external alarms. Use if a secondary (redundant) PEM is installed.
1 HM = hard metric
The power terminal block connectors (PWR 1 and PWR 2) are equipped with a positive, negative, and ground receptacle. This connector receives the power connections from the external power source.
The breaker terminal block connectors (BRKR 1 and BRKR 2) are equipped with three contacts (common [CO], normally closed [NC], and normally open [NO]) that used to wire alarm relays to external alarms.
There are eleven 50-pin Champ connectors used to transfer data between the Cisco 6160 and the POTS splitter in a Cisco 6160 with POTS splitter configuration. In a Cisco 6160 without a POTS splitter configuration, the connectors are used to transfer data between the Cisco 6160 and the CPE equipment. Table 1-2 describes the Champ connectors and the corresponding slots in the Cisco 6160 chassis.
1.2.2 Chassis Card Compartment
As shown in Figure 1-7, the Cisco 6160 card compartment houses
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Figure 1-7 Cisco 6160 Chassis Compartments
Air filter
NI-2 card (primary and secondary)
xTU-C line cards (slots 1 to 9 and 12 through 34)
Secondary PEM
Blower tray
Primary PEM
The Cisco 6160 chassis has 34 slots that hold line cards and NI-2 cards. Each card 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. Table 1-3 describes each card slot assignment for the Cisco 6160 chassis.
Table 1-3 Cisco 6160 Card Slot Assignments
1 to 9
4xflexis, 4xSDSLs1 , 8xDMTs, 8xG.SHDSLs1, or 8xIDSLs
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NI-2 card
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Secondary (redundant) NI-2 card
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4xflexis, 4xSDSLs, 8xDMTs, 8xG.SHDSLs, or 8xIDSLs
1 4xSDSLs and G.SHDSLs can be used only in a Cisco 6160 without a POTS splitter configuration.
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1.2.3 Line Cards
The following sections provide details about the Cisco 6160 line cards.
1.2.3.1 8xIDSL Overview
The 8xIDSL
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The Cisco 6160 chassis can include up to 32 8xIDSLs for a total of 256 IDSL modem connections.
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For line card intermixing information, see the "Line Card Intermixing" section.Figure 1-8 shows a close-up of the 8xIDSL faceplate.
Figure 1-8 8xIDSL Faceplate
Table 1-4 describes LEDs on the 8xIDSL.
1.2.3.2 8xG.SHDSL Overview
The 8xG.SHDSL
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For line card intermixing information, see the "Line Card Intermixing" section.Figure 1-9 shows a close-up of the 8xG.SHDSL faceplate.
Figure 1-9 8xG.SHDSL Faceplate
Table 1-5 describes LEDs on the 8xG.SHDSL.
1.2.3.3 8xDMT Overview
The 8xDMT
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If provisioned, the 8xDMT rate adapts to the maximum bit rate negotiable on the line. The maximum bit rate settings are provisioned in the management software.
The chassis can include up to 32 8xDMTs for a total of 256 ADSL modem connections.
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For line card intermixing information, see the "Line Card Intermixing" section.Figure 1-10 shows a close-up of the 8xDMT faceplate.
Figure 1-10 8xDMT Faceplate
Table 1-6 describes LEDs on the 8xDMT.
1.2.3.4 4xSDSL Overview
The 4xSDSL
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The negotiated bit rate is the lower of the following rates:
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The chassis can include up to 32 4xSDSLs for a total of 128 SDSL modem connections.
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For line card intermixing information, see the "Line Card Intermixing" section.The edge connector key, located on the rear of the 4xSDSL, connects the 4xSDSL to the backplane of the chassis. Two edge connector keys are available for the 4xSDSL: one has six notches and one has seven notches. You can only install the edge connector key with seven notches in the Cisco 6160.
Figure 1-11 shows a close-up of the 4xSDSL faceplate.
Figure 1-11 4xSDSL Faceplate
Table 1-7 describes the LEDs on the 4xSDSL.
1.2.3.5 4xflexi Overview
The 4xflexi
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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.
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For line card intermixing information, see the "Line Card Intermixing" section.The Cisco 6160 chassis can include up to 32 4xflexis for a total of 128 ADSL modem connections.
The edge connector key, located on the rear of the 4xflexi, connects the 4xflexi to the backplane of the chassis. Two edge connector keys are available for the 4xflexi: one has six notches and one has seven notches. You can only install the edge connector key with seven notches in the Cisco 6160.
Figure 1-12 shows a close-up of the 4xflexi faceplate.
Figure 1-12 4xflexi Faceplate
Ejector lever
Line card mode LEDs
Locking tab
Modem port status LEDs
STATUS LED
Extraction tab
ACTIVE LED
Table 1-8 describes the LEDs on the 4xflexi.
1.2.3.6 Line Card Intermixing
The Cisco 6160 chassis supports line card intermixing. The following sections will use the terms halves and quadrants. The Cisco 6160 chassis consists of two halves
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The Cisco 6160 chassis consists of four quadrants
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The following sections detail the line card intermixing guidelines for the Cisco 6160.
1.2.3.6.1 Guidelines for Intermixing xDSL Line Cards
Mixing line cards of different modulation types in the same quadrant of any Cisco DSLAM is prohibited. Different modulation types are allowed in the same half of a chassis with the exceptions of slots 18 and 34 in the Cisco 6160 beginning with Cisco IOS release 12.2(7)DA. Mixing line cards of the same modulation type (for example, 4xFlexiDMT and 8xDMT line cards) in a quadrant is allowed.
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1.2.3.6.2 Guidelines for Intermixing 8xG.SHDSLs—Cisco IOS Release 12.1(7)DA2, 12.2(1b)DA, and 12.2(5)DA
The Cisco 6160 chassis can be fully populated with 8xG.SHDSLs while retaining QoS, as long as the upstream bandwidth is provisioned at a maximum of 5 Mbps for even ports and a maximum of 5 Mbps for odd ports per line card. Once an 8xG.SHDSL is installed in a chassis quadrant, no ADSL line cards can be installed in that same quadrant.
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1.2.3.6.3 Guidelines for Intermixing 8xG.SHDSLs—Cisco IOS Release 12.2(7)DA and Later
The Cisco 6160 chassis supports up to 16 8xG.SHDSLs installed per chassis while retaining QoS. Once an 8xG.SHDSL is installed in a quadrant, no ADSL line cards can be installed in that same quadrant.
Figure 1-13 illustrates the optimal deployment of 8xG.SHDSLs and quadrant intermixing of ADSL line cards in the Cisco 6160 chassis. For example
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Figure 1-13 8xG.SHDSL and ADSL Line Card Intermixing in the Cisco 6160 Chassis
1.2.3.6.4 Guidelines for Intermixing 8xG.SHDSLs—Cisco IOS Release 12.2(12)DA and Later for NI2-155SM-155SM2 or NI2-155MM-155MM2 Only
This section describes intermixing in Cisco IOS Release 12.2(12)DA and later for NI2-155SM-155SM2 or NI2-155MM-155MM2 only. All other NI2s, including NI2-155SM-155SM and NI2-155MM-155MM, follow guidelines as described in the "Guidelines for Intermixing 8xG.SHDSLs—Cisco IOS Release 12.2(7)DA and Later" section.
The Cisco 6015, Cisco 6160, and Cisco 6260 can be fully populated with 8xG.SHDSLs while retaining QoS.
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Due to spectral compatibility limitations in the right side configuration of the Cisco 6160 chassis, line card slots 18 and 34 should be configured as specified in Table 1-9.
1.2.4 NI-2 Cards
The NI-2 card is a system processor module that includes the following features:
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Table 1-10 shows each Cisco 6160 NI-2 card type, the physical name of the card as it appears on the NI-2 card faceplate, and the hardware configuration of each NI-2 card type.
Table 1-10 NI-2 Card Hardware Configuration
DS3+T1/E1 IMA1
DS3+T1/E1 IMA
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DS3/2DS3
DS3/E3-DS3/E3
DS3/E3 coaxial (1)2
DS3/E3 coaxial (2)2
OC-3c/2DS3 SMF
OC3 SM/2XDS3
OC-3c (1)
DS3 coaxial (2)2
OC-3c/2DS3 MMF
OC3 MM/2XDS3
OC-3c (1)
DS3 coaxial (2)2
OC-3c/OC-3c SMF
155SM-155SM
OC-3c (1)
OC-3c (1)
OC-3c/OC-3c MMF
155MM-155MM
OC-3c (1)
OC-3c (1)
OC-3c/OC-3c SMF
155SM-155SM2
OC-3c (1)
OC-3c (1)
OC-3c/OC-3c MMF
155MM-155MM2
OC-3c (1)
OC-3c (1)
1 Use only with the DS3/2DS3+8xT1 I/O card (part number 6160-1-I/O-2=).
2 All network trunk and subtend connectors for this card are located on the I/O card.
The following sections provide details about the Cisco 6160 NI-2 cards.
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1.2.4.1 DS3+T1/E1 IMA NI-2 Card Overview
This section provides the following information about the DS3+T1/E1 IMA NI-2 card:
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1.2.4.1.1 Features
In addition to the features described in the "NI-2 Cards" section, the DS3+T1/E1 IMA NI-2 card
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1.2.4.1.2 Faceplate Features
Figure 1-14 shows a close-up of the DS3+T1/E1 IMA NI-2 card faceplate.
Figure 1-14 DS3+T1/E1 IMA NI-2 Card Faceplate
Table 1-11 describes the LED group indicators and their functions.
Table 1-11 DS3+T1/E1 IMA NI-2 Card LED Group Indicators
Interface status LED (5 in Figure 1-14)
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.
RX1 STAT
Amber solid
The receiver detects a physical layer problem.
Off
The receiver does not detect a physical layer problem.
TX2 STAT
Amber solid
The transmitter detects a physical layer problem.
Off
The transmitter does not detect a physical layer problem.
RCLK3
Green solid
Hardware detects an incoming clock signal.
Off
Hardware does not detect an incoming clock signal.
System alarm (6 in Figure 1-14)
CRITICAL
Red
A critical alarm is active.
MAJOR
Red
A major alarm is active.
MINOR
Amber
A minor alarm is active.
Card status (7 in Figure 1-14)
POWER
Green
The NI-2 card has power.
STATUS
Green
The operational status of the NI-2 card.
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ACTIVE
Green
The NI-2 card is operating as the active NI-2 card in the chassis.
Fan alarm (8 in Figure 1-14)
FAN 1
Red
The fan module or fan tray is not operational and is in alarm mode.
FAN 2
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This LED on the NI-2 card is inactive and is always off.
ENET interface LED (11 in Figure 1-14)
ACT
Green solid or blinking
The Ethernet interface is active.
Off
The Ethernet interface is inactive.
LNK
Green solid
The Ethernet link is connected and enabled.
1 RX = receive
2 TX = transmit
3 RCLK = receive clock
1.2.4.2 DS3/2DS3 NI-2 Card Overview
This section provides the following information about DS3/2DS3 NI-2 cards:
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1.2.4.2.1 Features
In addition to the features described in the "NI-2 Cards" section, the DS3/2DS3 NI-2 card
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1.2.4.2.2 Faceplate Features
Figure 1-15 shows a close-up of the DS3/2DS3 NI-2 card faceplate.
Figure 1-15 DS3/2DS3 NI-2 Card Faceplate
Table 1-12 describes the LED group indicators and their functions.
Table 1-12 DS3/2DS3 NI-2 Card LED Group Indicators
Interface status LED (5 in Figure 1-15)
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.
System alarm (6 in Figure 1-15)
CRITICAL
Red
A critical alarm is active.
MAJOR
Red
A major alarm is active.
MINOR
Amber
A minor alarm is active.
Card status (7 in Figure 1-15)
POWER
Green
The NI-2 card has power.
STATUS
Green
The operational status of the NI-2 card.
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ACTIVE
Green
The NI-2 card is operating as the active NI-2 card in the chassis.
Fan alarm (8 in Figure 1-15)
FAN 1
Red
The fan module or fan tray is not operational and is in alarm mode.
FAN 2
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This LED on the NI-2 card is inactive and is always off.
ENET interface LED (11 in Figure 1-15)
ACT
Green solid or blinking
The Ethernet interface is active.
Off
The Ethernet interface is inactive.
LNK
Green solid
The Ethernet link is connected and enabled.
1.2.4.3 OC-3c/2DS3 NI-2 Card Overview
This section provides the following information about OC-3c/2DS3 NI-2 cards:
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1.2.4.3.1 Features
In addition to the features that are described in the "NI-2 Cards" section, the OC-3c/2DS3 NI-2 card
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1.2.4.3.2 Faceplate Features
Figure 1-16 shows a close-up of the OC-3c/2DS3 NI-2 card faceplate.
Figure 1-16 OC-3c/2DS3 NI-2 Card Faceplate
Table 1-13 describes the LED group indicators and their functions.
Table 1-13 OC-3c/2DS3 NI-2 Card LED Group Indicators
Interface status LED (5 and 7 in Figure 1-16)
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.
System alarm (8 in Figure 1-16)
CRITICAL
Red
A critical alarm is active.
MAJOR
Red
A major alarm is active.
MINOR
Amber
A minor alarm is active.
Card status (9 in Figure 1-16)
POWER
Green
The NI-2 card has power.
STATUS
Green
The operational status of the NI-2 card.
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ACTIVE
Green
The NI-2 card is operating as the active NI-2 card in the chassis.
Fan alarm (10 in Figure 1-16)
FAN 1
Red
The fan module or fan tray is not operational and is in alarm mode.
FAN 2
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This LED on the NI-2 card is inactive and is always off.
ENET interface LED (13 in Figure 1-16)
ACT
Green solid or blinking
The Ethernet interface is active.
Off
The Ethernet interface is inactive.
LNK
Green solid
The Ethernet link is connected and enabled.
1.2.4.4 OC-3c/OC-3c NI-2 Card Overview
This section provides the following information about OC-3c/OC-3c NI-2 cards:
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1.2.4.4.1 Features
In addition to the features described in the "NI-2 Cards" section, the OC-3c/OC-3c NI-2 card
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1.2.4.4.2 Faceplate Features
Figure 1-17 shows a close-up of the OC-3c/OC-3c NI-2 card faceplate.
Figure 1-17 OC-3c/OC-3c NI-2 Card Faceplate
Table 1-14 describes the LED group indicators and their functions.
Table 1-14 OC-3c/OC-3c NI-2 Card LED Group Indicators
Interface status LED (5 in Figure 1-17)
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.
System alarm (7 in Figure 1-17)
CRITICAL
Red
A critical alarm is active.
MAJOR
Red
A major alarm is active.
MINOR
Amber
A minor alarm is active.
Card status (8 in Figure 1-17)
POWER
Green
The NI-2 card has power.
STATUS
Green
The operational status of the NI-2 card.
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ACTIVE
Green
The NI-2 card is operating as the active NI-2 card in the chassis.
Fan alarm (9 in Figure 1-17)
FAN 1
Red
The fan module or fan tray is not operational and is in alarm mode.
FAN 2
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This LED on the NI-2 card is inactive and is always off.
ENET interface LED (12 in Figure 1-17)
ACT
Green solid or blinking
The Ethernet interface is active.
Off
The Ethernet interface is inactive.
LNK
Green solid
The Ethernet link is connected and enabled.
1.2.4.5 Network Clocking Overview
The NI-2 card receives its network timing signal from any one of the following sources:
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1.2.4.6 Redundancy Overview
The following forms of redundancy are available for the Cisco 6160 system:
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1.2.4.6.1 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.
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
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The standby NI-2 card plays a minimal role during steady-state operations. In a standby state, the NI-2 card
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For management purposes, the primary and secondary NI-2 cards appear as one element. The cards share one IP address.
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1.2.4.6.2 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. 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.
The working link is the fiber connection between the ATM switch and the primary NI-2 card installed in slot 10 of the chassis. The protection link is the fiber connection between the ATM switch and the secondary NI-2 card installed in slot 11 of the chassis. 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 switches 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 does not occur.
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1.2.4.6.3 Redundancy in Subtended 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 in subtending configurations only if the subtending host chassis has a secondary (redundant) OC-3c/OC-3c or OC-3c/2DS3 NI-2 card installed.
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1.2.5 I/O Cards
Table 1-15 lists the Cisco 6160 I/O cards and NI-2 card compatibility.
Table 1-15 I/O Card and NI-2 Card Compatibility
DS3/2DS3+8xT1 IMA
Yes
Yes
Yes
Yes
DS3/2DS3
No
Yes
Yes
Yes
The following sections provide details about the Cisco 6160 I/O cards.
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1.2.5.1 DS3/2DS3+8xT1 IMA I/O Card Overview
This section provides the following information about DS3/2DS3+8xT1 IMA I/O cards
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1.2.5.1.1 Features
A DS3/2DS3+8xT1 IMA I/O card
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Figure 1-18 shows a close-up of the DS3/2DS3+8xT1 IMA I/O card with the EMI cover installed.
Figure 1-18 DS3/2DS3+8xT1 IMA I/O Card with the EMI Cover
Figure 1-19 shows a close-up of the DS3/2DS3+8xT1 IMA I/O card without the EMI cover installed.
Figure 1-19 DS3/2DS3+8xT1 IMA I/O Card Without the EMI Cover
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The DS3/2DS3+8xT1 IMA I/O card provides three sets of two vertically paired DS3 75-ohm BNC coaxial cable connectors that are located on the left side of the DS3/2DS3+8xT1 IMA I/O card. Each set of port connectors has both a TX connector and a RX connector. Table 1-16 lists the DS3 BNC connector sets in relation to the NI-2 cards available for the Cisco 6160 chassis.
The DS3/2DS3+8xT1 IMA I/O card is delivered installed and attached to the two 2-mm HM card connectors, P3 and P9, on the chassis backplane (see Figure 1-20). The DS3/2DS3+8xT1 IMA I/O card is shown with the metal EMI cover installed.
Figure 1-20 DS3/2DS3+8xT1 IMA I/O Card Location on the Cisco 6160 Chassis Backplane
1.2.5.1.2 DS3/2DS3+8xT1 IMA I/O Card Wire-Wrap Pins
There are 30 wire-wrap pins located on the right side of each DS3/2DS3+8xT1 IMA I/O card that support
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Both the alarm relays and the BITS clock connections are optional. If you connect the alarm relays, they transmit critical, major, and minor alarms to a separate, external alarm device. The alarm device uses a bell, light, or some other signal to alert service personnel to the change in system status. If you connect the BITS interface, the Cisco 6160 can receive a clock signal from a T1 line.
Figure 1-21 shows a close-up of the wire-wrap pins.
Figure 1-21 DS3/2DS3+8xT1 IMA I/O Card Wire-Wrap Pins Close-Up
These pins support the following alarm functions:
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Alarm pins are wired to both NI-2 cards, however, only one NI-2 card manages the alarms. The ACO switch that is located on the NI-2 card faceplate shuts off the audible alarms generated by the Cisco 6160 system software.
One of the alarm relay functions provided by the wire-wrap connector is an ACO circuit that you can wire to your external alarm device. To use this feature, connect the alarm device so that it can close the contact between pin 5 and pin 6 in the STAT_ALARMS row.
The connector also provides contacts for the following features, all of which can be used (or not used) separately:
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You can wire the alarm relay contacts as normally open (NO) or normally closed (NC); however, the ACO circuit can be wired as NO only. Use common (CO) pins for both the NO and NC wiring methods.
Normally open
Pin 2 in rows P1, P2, P3 (NO)
Pin 5 in rows P1, P2, P3, P4 (NO)
Pin 1 in rows P1, P2, P3 (CO)
Pin 4 in rows P1, P2, P3 (CO)
Pin 6 in row P4 (GND1 )Normally closed
Pin 3 in rows P1, P2, P3 (NC)
Pin 6 in rows P1, P2, P3 (NC)
Pin 1 in rows P1, P2, P3 (CO)
Pin 4 in rows P1, P2, P3 (CO)
1 GND = ground
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The BITS pins on Cisco 6160 DS3/2DS3+8xT1 IMA I/O card are slot specific. BITS_A pins are assigned to slot 11 and BITS_B pins are assigned to slot 10. Each BITS clock input is independent and terminated at 100 ohms.1.2.5.2 DS3/2DS3 I/O Card Overview
This section provides the following information about DS3/2DS3 I/O cards
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1.2.5.2.1 Features
A DS3/2DS3 I/O card
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Figure 1-22 shows a close-up of the DS3/2DS3 I/O card with the EMI cover installed.
Figure 1-22 DS3/2DS3 I/O Card with the EMI Cover
Figure 1-23 shows a close-up of the DS3/2DS3 I/O card without the EMI cover installed.
Figure 1-23 DS3/2DS3 I/O Card Without the EMI Cover
The DS3/2DS3 I/O card provides three sets of two vertically paired DS3 75-ohm BNC coaxial cable connectors that are located on the left side of the DS3/2DS3 I/O card. Each set of port connectors has both a TX connector and a RX connector. Table 1-17 lists the DS3 BNC connector sets in relation to the NI-2 cards available for the Cisco 6160 chassis.
The DS3/2DS3 I/O card is delivered installed and attached to the two 2-mm HM card connectors, P3 and P9, on the chassis backplane (see Figure 1-24). The DS3/2DS3 I/O card is shown with the metal EMI cover installed.
Figure 1-24 DS3/2DS3 I/O Card Location on the Cisco 6160 Chassis Backplane
1.2.5.2.2 DS3/2DS3 I/O Card Wire-Wrap Pins
There are 30 wire-wrap pins located on the right side of each DS3/2DS3 I/O card that support
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Both the alarm relays and the BITS clock connections are optional. If you connect the alarm relays, they transmit critical, major, and minor alarms to a separate, external alarm device. The alarm device uses a bell, light, or some other signal to alert service personnel to the change in system status. If you connect the BITS interface, the Cisco 6160 can receive a clock signal from a T1 line.
One of the alarm relay functions provided by the wire-wrap connector is an ACO circuit that you can wire to your external alarm device. To use this feature, connect the alarm device so that it can close the contact between pin 5 and pin 6 in row P4.
The connector also provides contacts for the following features, all of which can be used (or not used) separately:
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You can wire the alarm relay contacts as NO or NC; however, the ACO circuit can be wired as NO only. Use CO pins for both the NO and NC wiring methods.
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The BITS pins on Cisco 6160 DS3/2DS3 I/O card are slot specific. BITS_A pins are assigned to slot 11 and BITS_B pins are assigned to slot 10. Each BITS clock input is independent and terminated at 100 ohms.1.2.6 PEM
The Cisco 6160 chassis is equipped with one or two -48VDC PEMs, which distribute direct current (DC) power within the chassis. The Cisco 6160 needs only one active PEM to operate; if two PEMs are installed, a secondary PEM serves as a hot backup to the first PEM.
Each PEM should be connected to a single DC power source. For full power redundancy, two PEMs must be installed and connected to two separate DC power sources.
The primary Cisco 6160 PEM is located in the bottom right slot of the Cisco 6160 chassis. If you have a redundant system, a secondary PEM is located in the top right slot of the chassis. Figure 1-7 shows the location of the PEMs in the Cisco 6160 chassis.
The PEM provides the following features:
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Figure 1-25 shows a close-up of the PEM faceplate.
Figure 1-25 PEM Faceplate
Two-position circuit breaker. The positions are Off (0) and On (1).
OUT FAIL LED.
INPUT OK LED.
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Table 1-18 describes the LEDs on the PEM.
1.2.7 Blower Tray
The Cisco 6160 chassis is equipped with a blower tray, which provides forced air cooling required by all Cisco 6160 system circuit cards.
The Cisco 6160 blower tray is located in the top slot above the xTU-C line cards and NI-2 cards. Figure 1-7 shows the location of the blower tray in the Cisco 6160 chassis.
The blower tray
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The blower speed returns to normal (low speed) when
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Figure 1-26 shows a close-up of the blower tray faceplate.
Figure 1-26 Blower Tray Faceplate
Table 1-19 describes the LED on the blower tray.
1.2.8 Air Filter
An air filter is located at the bottom of the chassis (see Figure 1-7 for location). The air filter must be removed and cleaned periodically. Once a month (or more often in dusty environments), examine the air filter and clean or replace it if it is dirty. Keep a log recording the date that the filter was cleaned or replaced.
See the "Air Filter Maintenance" section on page 6-36 for complete instructions on cleaning and replacing the air filter. Figure 1-27 shows the location of the air filter and the protective bezel that covers it.
Figure 1-27 Air Filter
1.3 Management Software
You can provision and manage the Cisco 6160 system through the following management software:
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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.
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The Cisco 6160 includes CO alarm LED indicators and relays that indicate system status. You can wire CO facility alarm relay contacts for either normally open or normally closed operation. The supported alarms that are generated by the management software are:
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Visual and audible alarm relay contacts can be wired from the Cisco 6160 to CO alarm devices (remote lights or bells) located anywhere within the facility.
The visual and audible alarm relays are located on the I/O card, but the NI-2 card hardware operates them.
For more information on alarms that are generated in the management software, see "Troubleshooting."
Posted: Thu Feb 24 12:59:30 PST 2005
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