Zhone MXK Manual

MXK Hardware Installation Guide
For software version 2.1
July 2010
Document Part Number: 830-01734-10

2MXK Hardware Installation Guide
Zhone Technologies
@Zhone Way
7001 Oakport Street
Oakland, CA 94621
USA
510.777.7000
www.zhone.com
[email protected]
COPYRIGHT C2000-2010 Zhone Technologies, Inc. and its licensors. All rights reserved.
This publication is protected by copyright law. No part of this publication may be copied or
distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human
or computer language in any form or by any means, electronic, mechanical, magnetic, manual
or otherwise, or disclosed to third parties without the express written permission from Zhone
Technologies, Inc.
Bitstorm, EtherXtend, IMACS, MALC, MXK, Raptor, SLMS, Z-Edge, Zhone, ZMS, zNID and
the Zhone logo are trademarks of Zhone Technologies, Inc.
Zhone Technologies makes no representation or warranties with respect to the contents hereof
and specifically disclaims any implied warranties of merchantability, non infringement, or
fitness for a particular purpose.
Further, Zhone Technologies reserves the right to revise this publication and to make changes
from time to time in the contents hereof without obligation of Zhone Technologies to notify any
person of such revision or changes.

MXK Hardware Installation Guide 3
About This Guide...............................................................................................................................5
Style and notation conventions.............................................................................5
Typographical conventions ......................................................................................6
Related documentation ............................................................................................6
Acronyms.....................................................................................................................7
Contacting Global Service and Support..............................................................8
Technical support .....................................................................................................8
Hardware repair .......................................................................................................9
Chapter 1 MXK.............................................................................................................................11
MXK overview............................................................................................................11
MXK features.............................................................................................................15
Ethernet services.....................................................................................................15
GPON .....................................................................................................................15
VoIP........................................................................................................................16
MGCP.....................................................................................................................16
SIP ..........................................................................................................................17
Redundancy............................................................................................................17
Management ...........................................................................................................17
Data services...........................................................................................................18
MXK hardware overview.........................................................................................19
MXK chassis ..........................................................................................................19
MXK 819 and 823 chassis......................................................................................19
MXK 319 chassis ...................................................................................................22
MXK slot cards.......................................................................................................22
Uplink card guidelines.....................................................................................22
Add, change or delete card profiles .................................................................23
Reset cards .......................................................................................................23
Small form factor pluggables .................................................................................24
MXK backplane......................................................................................................24
Chapter 2 Install the MXK .......................................................................................................25
Pre-installation preparation...................................................................................25
Installation overview ..............................................................................................25
General safety precautions......................................................................................27
Safety ...............................................................................................................27
Prevent electrostatic damage............................................................................28
Power supply safety information .....................................................................29
Installation precautions...........................................................................................29
Environmental specifications .................................................................................30
Power requirements and specifications ..................................................................32
Cabling rules for power ...................................................................................32
Power specifications ........................................................................................33
Chassis power consumption.............................................................................33
TABLE OF CONTENTS

Table of Contents
4MXK Hardware Installation Guide
Grounding and isolation..........................................................................................34
Select the system location.......................................................................................34
Tools needed...........................................................................................................34
Compliance and certifications.................................................................................35
Install the MXK ..........................................................................................................35
Unpack the system..................................................................................................35
Install mounting brackets........................................................................................36
Mount the chassis in a rack.....................................................................................36
Install cards.............................................................................................................38
Connect power and ground the chassis ..................................................................41
Grounding requirements...................................................................................41
Connect power to the front of the MXK and ground the chassis.....................42
Connect power to the rear of the MXK 823 and ground the chassis................47
Connect power to the MXK 319 and ground the chassis ................................50
Chapter 3 System Cables and Connectors......................................................................55
Guidelines for cables...............................................................................................55
Cable descriptions...................................................................................................56
MXK alarm cable and contacts guidelines ........................................................56
Fiber optic maintenance and optical connections..........................................59
Laser radiation ........................................................................................................59
Handle optical fibers...............................................................................................60
Optical connections.................................................................................................60
Select cleaning materials.........................................................................................61
Clean a connector....................................................................................................61
Clean a receptacle...................................................................................................61
Report optical fiber breakage..................................................................................62
Chapter 4 MXK Hardware Maintenance.............................................................................63
Read the LEDs...........................................................................................................63
Install a slot card ......................................................................................................65
Remove a slot card ..................................................................................................66
Replace running redundant uplink cards ..........................................................67
Clean and replace the air filter..............................................................................68
Replacing the fan tray for the 8U chassis..........................................................70
Replacing the fan tray for the MXK 319 chassis..............................................72
Index......................................................................................................................................................75

MXK Hardware Installation Guide 5
ABOUT THIS GUIDE
This guide is intended for use by installation technicians, system
administrators, and network administrators. This guide contains procedures
on how to prepare, install, and maintain the MXK chassis, install and remove
slot cards, and configure interfaces for MXK management.
Style and notation conventions
The following conventions are used in this document to alert users to
information that is instructional, warns of potential damage to system
equipment or data, and warns of potential injury or death. Carefully read and
follow the instructions included in this document.
Caution: A caution alerts users to conditions or actions that could
damage equipment or data.
Note: A note provides important supplemental or amplified
information.
Tip: A tip provides additional information that enables users to more
readily complete their tasks.
WARNING! A warning alerts users to conditions or actions that
could lead to injury or death.
WARNING! A warning with this icon alerts users to conditions or
actions that could lead to injury caused by a laser.

About This Guide
6MXK Hardware Installation Guide
Typographical conventions
Table 1 describes the typographical styles this guide uses to represent specific
types of information.
Related documentation
Refer to the following documents for additional information:
MXK Configuration Guide — explains how to configure routing or bridging,
GPON, link aggregation, and other operations, administration, and
maintenance tasks.
Zhone CLI Reference Guide — explains how to use the Zhone command line
interface (CLI) and describes the system commands and parameters.
Refer to the release notes for software installation information and for
changes in features and functionality of the product (if any).
Table 1: Typographical styles
Bold Used for names of buttons, dialog boxes, icons, menus, and profiles
when placed in body text, and property pages (or sheets). Also used for
commands, options, parameters in body text, and user input.
Fixed Used in code examples for computer output, file names, path names,
and the contents of online files or directories.
Fixed Bold Used in configuration examples for text typed by users.
Italic Used for book titles, chapter titles, file path names, notes in body text
requiring special attention, section titles, emphasized terms, and
variables.
PLAIN UPPER CASE Used for environment variables.
Command Syntax Brackets [ ] indicate optional syntax.
Vertical bar | indicates the OR symbol.

Acronyms
MXK Hardware Installation Guide 7
Acronyms
Table 2 provides a description of the acronyms that are related to Zhone
products and may be found in this manual.
Table 2: Acronyms and their descriptions
Acronym Description
ADSL Asymmetrical digital subscriber line
ARP Address resolution protocol
CID Channel identifier
DSL Digital subscriber line
EFM Ethernet in the First Mile
IAD Integrated access device
MALC Multi-access line concentrator
MIB Management information bases
OLT Optical line terminal
ONT Optical network terminal
ONU Optical network unit
RIP Routing Information Protocol
SFP Small form factor pluggable
SDSL Symmetric digital subscriber line
SHDSL Symmetric high-bit-rate digital subscriber line
SLMS Single Line Multi-Service
SNMP Simple Network Management Protocol
TAC Metallic Test Access Card
TFTP Trivial File Transfer Protocol
XFP 10 Gigabit Ethernet small form factor pluggable
ZMS Zhone Management System

About This Guide
8MXK Hardware Installation Guide
Contacting Global Service and Support
If your product is under warranty (typically one year from date of purchase)
or you have a valid service contract, you can contact Global Service and
Support (GSS) with questions about your Zhone product or other Zhone
products, and for technical support or hardware repairs.
Before contacting GSS, make sure you have the following information:
•Zhone product you are using
•System configuration
•Software version running on the system
•Description of the issue
•Your contact information
If your product is not under warranty or you do not have a valid service
contract, please contact GSS or your local sales representative for a quote on a
service plan. You can view service plan options on our web site at
http://www.zhone.com/support/services/warranty
Technical support
The Technical Assistance Center (TAC) is available with experienced support
engineers who can answer questions, assist with service requests, and help
troubleshoot systems.
If you purchased the product from an authorized dealer, distributor, Value
Added Reseller (VAR), or third party, contact that supplier for technical
assistance and warranty support.
Hours of operation Monday - Friday, 8 a.m. to 5 p.m, Pacific
(excluding U.S. holidays)
Telephone (North America) 877-ZHONE20 (877-946-6320)
Telephone (International) 510-777-7133
E-mail [e-mail]
The Web is also available 24 x 7
to submit and track Service
Requests (SR's)
www.zhone.com/support

Contacting Global Service and Support
MXK Hardware Installation Guide 9
Hardware repair
If the product malfunctions, all repairs must be authorized by Zhone with a
Return Merchandise Authorization (RMA) and performed by the
manufacturer or a Zhone-authorized agent. It is the responsibility of users
requiring service to report the need for repair to GSS as follows:
•Complete the RMA Request form (http://www.zhone.com/account/sr/
submit.cgi) or contact Zhone Support via phone or email:
Hours of operation: Monday Friday, 6:30am-5:00pm (Pacific Time)
E-mail: [e-mail] (preferred)
Phone: [phone] or 510-777-7133, prompt #3, #2
•Provide the part numbers and serial numbers of the product(s) to be
repaired.
•All product lines ship with a minimum one year standard warranty (may
vary by contract).
•Zhone will verify the warranty and provide a repair quote for anything not
under warranty. Zhone requires a purchase order or credit card for
out-of-warranty fees.

About This Guide
10 MXK Hardware Installation Guide

MxK Hardware Installation Guide 11
MXK
This chapter provides an overview of the MXK. It includes the following
sections:
•MXK overview, page 11
•MXK features, page 15
•MXK hardware overview, page 19
MXK overview
The MXK platform provides high-density subscriber access concentration in
the Zhone Single Line Multi-Service (SLMS) architecture. Figure 1 describes
a typical MXK scenario.
Figure 1: MXK access network

MXK
12 MxK Hardware Installation Guide
The MXK in conjunction with zNIDs, provides a complete end-to-end access
solution for fiber deployments (GPON and Active Ethernet) that provide
triple-play services to subscribers. zNIDs at customer sites extend network
intelligence all the way to subscribers with the ability to fine-tune
performance.
The MXK provides advanced Quality of Service (QoS), Ethernet, and IP
features that have been proven in carrier networks around the world and
includes improved cable and fiber management and IP and Ethernet packet
forwarding.
MXK redundant uplinks are the primary communication channel between
subscribers and upstream networking devices. The MXK aggregates local
loop traffic from a variety of media and sends it to an upstream device, such
as an IP router. The MXK supports GPON, Active Ethernet, ADSL and
EFM-SHDSL edge connection technologies and 100/1000 Ethernet and 10
Gigabit (GE) uplinks.
The redundant Ethernet uplinks on the MXK enable network providers to
provision all classes of services in a single platform and leverage the existing
copper infrastructure going to the Digital Loop Carrier (DLC) locations.
Figure 2 suggests the different types of network technologies the MXK
supports.
Figure 2: MXK configurations
The MXK can be deployed in Central Office environments or outdoor
controlled environmental vaults for remote terminal applications. The MXK
is intended for restricted access locations only.
MXK cards are divided into the following two types:
•There are three uplink cards for the MXK:
–MXK MXK-UPLINK-2X10GE-8X1GE
Provides high-speed Gigabit Ethernet interfaces with active/standby
redundancy. This uplink card consists of two 10 GE and eight 100/
1000 Ethernet interfaces.

MXK overview
MxK Hardware Installation Guide 13
–MXK MXK-UPLINK-8X1G
Provides high-speed Gigabit Ethernet interfaces with active/standby
redundancy. This uplink card consists of eight 100/1000 Ethernet
interfaces.
–MXK-UPLINK-4X1G-CU
Provides high-speed Gigabit Ethernet interfaces with active/standby
redundancy. This uplink card consists of four 100/1000 Ethernet
interfaces and supports only copper line cards.
•GPON, Active Ethernet, ADSL2+ and EFM SHDSL line cards provide
customer interfaces for services like IP TV, VoIP, and data.
The MXK line cards are:
–Active Ethernet
MXK-AEX20-FE/GE-2SMXK cards: MXK-AEX20-FE/GE-2S
MXK-AEX20-FE/GE
The MXK-AEX20-FE/GE-2S is a two slot card that supports
Ethernet traffic over 10 or 20 ports that provide either 10/100/1000
Base-T, fiber 100FX or 1 Gigabit Ethernet interfaces to support
distances as high as 80km depending on the SFPs used. The Active
Ethernet cards are also interoperable third party Active Ethernet
devices.
The Active Ethernet cards support Layer 2 bridging functions, Layer
2 security functions, Layer 3 routing functions and the Zhone
Multimedia Traffic Management functionality (MTM).
–GPON
MXK-GPONX4-IO
MXK-GPONX8-IO
A quad or octal interface that supports 2.5 Gbps downstream
bandwidth and 1.25 Gbps upstream bandwidth per interface as
specified in the G.984.1-4 specifications.
The MXK 8 port GPON card can support up to 512 GPON
subscribers using Class B+ optics. The MXK 4 port GPON card can
support up to 256 GPON subscribers using Class B+ optics.
–ADSL2+
MXK-ADSL2+-BCM-48A
MXK-ADSL2+-SPLTR600-BCM-48A-2S
MXK-ADSL2+-SPLTR900-BCM-48A-2S
MXK-ADSL2+-POTS-BCM-48A-2S

MXK
14 MxK Hardware Installation Guide
The MXK-ADSL2+-POTS-BCM-48A-2S is a two-slot card and
provides 48 ports of integrated ADSL and POTS VoIP service. This
card supports the ANSI T1.413 Issue 2, G.992.1 (G.dmt) and G.992.2
(G.lite), G.992.3 and G.992.4 (ADLS2), G.992.5 (ADSL2+), Annex A,
and Annex M ADSL standards. Also supports SIP, SIP-PLAR, H.248,
and MGCP protocols.
The MXK-ADSL2+-BCM-48A, is a single slot card that supports
ADSL2+ Annex A/M. The standards supported are ANSI T1.413
Issue 2, G.992.1 (G.dmt), G.992.2 (G.lite), and ADSL2+ (G.992.5)
standards.
The MXK-ADSL2+-SPLTR600-BCM-48-2S, and
MXK-ADSL2+-SPLTR900-BCM-48-2S are two-slot cards with an
integrated POTS splitter to provide 48 ports of integrated ADSL and
POTS service. Each of these lines are combined with the ADSL2+
signal internally and exits the line card in the subscriber direction
with both ADSL and POTS on the loop. In the network direction the
POTS is split from the ADSL signal keeping POTS on copper pairs
and placing the ADSL data information on the IP network.
The MXK-ADSL2+-SPLTR600-BCM-48-2S, and
MXK-ADSL2+-SPLTR900-BCM-48-2S cards support the ANSI
T1.413 Issue 2, G.992.1 (G.dmt) and G.992.2 (G.lite), G.992.3 and
G.992.4 (ADSL2), G.992.5 (ADSL2+), Annex A standards and
Annex M ADSL standards.
All ADSL cards support VoIP POTS services.
–EFM-SHDSL
MXK-EFM-SHDSL-24-NTP
MXK-EFM-SHDSL-24-NTWC
The MXK-EFM-SHDSL-24 NTP card provides network timing
reference and line power. The timing reference enables the card to use
the MXK timing as the SHDSL line clocking. This allows an SHDSL
CPE to derive timing from the input of the SHDSL lines. It then can
use that timing/clocking to provide timing to other subtended
devices.The line power feature can be used to power CPEs such as the
SkyZhone to eliminate the need for local power. The power is
combined with the data and sent out over the 24 SHDSL ports to
downstream CPE devices such as the SkyZhone. One
MXK-EFM-SHDSL-24-NTP line card can provide power and data
for up to 12 CPE devices.
The MXK-EFM-SHDSL-24 NTWC card provides network timing
reference and wetting current. The network timing reference allows
SHDSL lines to use the backplane clock to clock T1/E1 traffic
eliminating the need for a clock source at each location where remote
devices are installed.

MXK features
MxK Hardware Installation Guide 15
The MXK has a non-blocking architecture with a high-speed backplane. Each
line card on the MXK had a dedicated backplane trace to each of the uplink
cards.
The MXK chassis, uplink cards, line cards, and SFPs are temperature
hardened.
MXK features
This section describes some key features of the MXK, including:
•Ethernet services, page 15
•GPON, page 15
•VoIP, page 16
•MGCP, page 16
•SIP, page 17
•Redundancy, page 17
•Management, page 17
•Data services, page 18
Ethernet services
The 20-port Active Ethernet card is a two-slot card that supports 20 SFPs that
can provide copper and fiber services and supports distances as high as 80
Km.
The 10-port Active Ethernet line card line card is a single slot card that
supports Ethernet traffic over 10 ports that provide either 10/100/1000
Base-T, fiber 100FX or 1 Gigabit Ethernet interfaces to support distances as
high as 80km depending on the SFPs used.
See Small form factor pluggables on page 492 for information on SFPs for
Ethernet.
GPON
The 4-port and 8-port GPON cards allow per-port speeds of 2.5 Gbps
downstream (on 1490 nm) and 1.25 Gbps upstream (1310nm). The GPON
cards support a simple SC connector SFP with a Burst receive GPON OLT
transceiver.
See Small form factor pluggables on page 492 for information on SFPs for
GPON.

MXK
16 MxK Hardware Installation Guide
VoIP
Voice over IP, also known as Internet Telephony, supports full duplex
transmission of voice traffic over IP networks. The MXK supports Media
gateway control protocol (MGCP) and Session Initiation Protocol (SIP).
MGCP
Media gateway control protocol (MGCP) provides the means to interconnect
a large number of IP telephony gateways. MGCP assumes that a call agent
(CA) performs the intelligence of all call-control operations and that a media
gateway (MG) carries out all media processing and conversion.
MGCP provides an internetworking control system to control telephony
gateways from external call control elements are referred to as call agents. A
telephony gateway is a network element that provides conversion between the
audio signals carried on telephone circuits and data packets carried over the
Internet or over other packet networks.
MGCP assumes a call control architecture in which the call control
“intelligence” is outside the gateways and handled by external call control
elements. The MGCP assumes that these call control elements, or Call
Agents, will synchronize with each other to send coherent commands to the
gateways under their control. MGCP does not define a mechanism for
synchronizing Call Agents. MGCP is, in essence, a master/slave protocol,
where the gateways are expected to execute commands sent by the Call
Agents.
MGCP assumes a connection model constructed of endpoints and
connections. Endpoints are sources or sinks of data and could be physical or
virtual.
Examples of physical endpoints are:
•An interface on a gateway that terminates a trunk connected to PSTN
switch (for example, a Class 5 or Class 4 switch). A gateway that
terminates trunks is called a trunk gateway.
•An interface on a gateway that terminates an analog POTS connection to
a phone, key system, PBX, etc. A gateway that terminates residential
POTS lines (to phones) is called a residential gateway.
•An example of a virtual endpoint is an audio source in an audio-content
(media) server.
Creation of physical endpoints requires hardware installation, while creation
of virtual endpoints can be done in software.
Connections may be either point-to-point or multipoint. A point-to-point
connection is an association between two endpoints with the purpose of
transmitting data between these endpoints. Once this association is
established for both endpoints, data transfer between these endpoints can take
place.

MXK features
MxK Hardware Installation Guide 17
The MXK also supports Megaco, H.248.
SIP
Session Initiation Protocol (SIP) is a signaling protocol that provides a
mechanism for:
•call establishment
•call teardown
•call control
•other supplementary services in an IP network.
There are two major architectural components within SIP: the SIP user agent
(UA) and the SIP network server. The UA is the end system component
responsible to initiate and answer calls. The SIP server is the network device
that handles the signaling associated with multiple calls.
The UA itself has a client element, the User Agent Client (UAC) and a server
element, the User Agent Server (UAS). The client element initiates the calls
and the server element answers the calls. This allows peer-to-peer calls to be
made using a client-server protocol.
The main function of the SIP server is to provide name resolution and user
location, since the caller is unlikely to know the IP address or host name of the
called party, and to pass on messages to other servers or SIP endpoints. Other
functions performed by the SIP servers are redirecting, forking, and
registration.
Together these components make up a basic SIP infrastructure. Application
servers can sit above these components delivering SIP supplementary services
to end users.
Redundancy
The MXK supports uplink card redundancy.
When the cards boot up, they elect an active and a standby card based on their
respective weights. If an active card fails, the standby takes over and becomes
active. Note that redundancy is non-revertive. That is, a previously active card
does not become active when it starts up again.
When the standby card comes up, the active card copies over the
configuration database, routing tables, and software binaries to the standby
card. As configuration changes are made to the active card, the standby card is
automatically updated.
Management
The MXK can be managed either in-band (VLAN tagged) on uplink Ethernet
ports, out-of-band on the 10/100 Ethernet interface, or IP on a bridge.

MXK
18 MxK Hardware Installation Guide
The uplink card also contains a serial (craft) port for local management.
After establishing a connection to the MXK, administrators can manage the
device using the Command Line Interface (CLI), Web UI, ZMS, or SNMP.
Data services
The MXK provides access and aggregation routing functions to connect
subscribers to networks. The following MXK interfaces support IP traffic:
•One Ethernet interface on the uplink card only for management.
•High speed Ethernet interfaces on the uplink cards including two 10 GE
links and eight 100/1000 Ethernet links.
The MXK provides the following key data services:
•IP forwarding and routing—incoming packets from an interface are
forwarded to the appropriate output interface using the routing table rules.
•Bridging—incoming packets from an interfaces are forwarded based on
MAC addresses or Layer 2 forwarding rules.
•DHCP servers and relay for IP address configuration.
•IP filtering. IP filtering is typically performed to enhance network
security by limiting access between two networks.
•Numbered or unnumbered interfaces.
•Bridging: uplink, downlink, TLS, and intralinks.
•Bridging enhancements:
–IP on a TLS bridge
–Intralink support including multiple intralinks
–VLAN wildcard for Q-in-Q
–DHCP relay
•Routing (uplinks, Active Ethernet)
•Video: Multicast (IGMPv1 / v2), IGMP snooping, IGMP proxy reporting
•QoS: rate limiting (three color policing; color blind, 802.1p)
•RIP v1 (RFC 1058) RIPv2 (RFC 2453)
•DHCP server (RFC 2131, 2132)
•QoS: Rate limiting, 3 color policing, 802.1p
•Link aggregation
•Q-in-Q (Active Ethernet, GPON)
•Security
–System security: SSH, HTTPS, and SFTP

MXK hardware overview
MxK Hardware Installation Guide 19
–Secure bridging: Destination MAC swapping, secure bridging filters
•RSTP on uplinks
•GPON
–Smart OMCI: interoperability with third party ONTs
–64 splits, class B+ optics
–Dynamic GEM port creation
The MXK can be managed with:
•Command line interface (CLI)
•ZMS
•WebUI
MXK hardware overview
This sections describes the MXK hardware, including:
•MXK 819 and 823 chassis, page 19
•MXK 319 chassis, page 22
•MXK slot cards, page 22
•Small form factor pluggables, page 24
•MXK backplane, page 24
MXK chassis
The 8U 19-inch and 23-inch chassis and the 3U chassis are functionally
equivalent, the only difference is the number of slots supported.
You can install the uplink cards, that provide the primary control and
management functions for the MXK system, in a redundant pair to provide
card-level redundancy. Figure 4 shows the 19” MXK chassis with 14 line
cards and two uplink cards.
MXK 819 and 823 chassis
The MXK 8U chassis currently comes in two sizes:
•MXK 819
19-inch wide, 8U high unit contains 14 line card slots and 2 uplink slots
•MXK 823
23-inch wide 8U high unit contains 20 slots, 18 line card slots and 2
uplink slots

MXK
20 MxK Hardware Installation Guide
In the 8U chassis the two middles slots, slots aand b, are only for the uplink
cards. There are 7 or 9 line cards on either side of the uplink cards depending
on the chassis size. Any type of line card can be installed in those slots.
Cables and connectors are accessed from the front of the chassis. The MXK
provides a metal harness on the front of the chassis for easy cable
management as shown in Figure 3.
Cables and connectors (except for power cables) are accessed from the front
of the chassis as shown in Figure 3. For the MXK 819, power cables enter the
device at the lower right front of the unit. Power for the MXK 823 is provided
on both the front of the chassis and the rear of the chassis. Both power
supplies are supplied by dual –48V DC input power. The airflow through the
unit is from bottom to top. The chassis is FCC, UL, CSA, and CE compliant.
See Connect power to the front of the MXK and ground the chassis on page 42
or Connect power to the rear of the MXK 823 and ground the chassis on
page 47 for connecting power instructions.
Figure 3: MXK chassis with cables and connectors
Figure 5 shows the 23” MXK chassis with 18 line cards and two uplink cards.
mx0702
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