Allied Telesis AT-AR040 Installation and operating manual

Network Service Module
Installation and Safety Guide
AT-AR040
AT-AR041
AT-AR042
AT-AR048

2 Network Service Module
613-000610 Rev A
Network Service Module Installation and Safety Guide
Document Number 613-000610 Rev A.
Copyright © 2006 Allied Telesis Inc. All rights reserved. No part of this
publication may be reproduced without prior written permission from Allied
Telesis, Inc.
Allied Telesis, Inc. reserves the right to make changes in specifications and other
information contained in this document without prior written notice. The
information provided herein is subject to change without notice. In no event
shall Allied Telesis, Inc. be liable for any incidental, special, indirect, or
consequential damages whatsoever, including but not limited to lost profits,
arising out of or related to this manual or the information contained herein,
even if Allied Telesis has been advised of, known, or should have known, the
possibility of such damages.
All company names, logos, and product designs that are trademarks or
registered trademarks are the property of their respective owners.

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613-000610 Rev A
Contents
Package Contents .................................................................................................................... 4
Compatible Base Units ........................................................................................................... 4
Hot Swapping ............................................................................................................................ 5
Hot swapping an AT-AR040 ......................................................................................... 5
Installing a Network Service Module .................................................................................. 6
LEDs and What They Mean .................................................................................................. 9
Base Unit LEDs related to NSMs .............................................................................. 10
PIC LEDs ........................................................................................................................ 11
Where To Find More Information ..................................................................................... 11

4 Network Service Module
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Package Contents
The following items are included with each Network Service Module (NSM).
Contact your authorised Allied Telesis distributor or reseller if any items are
damaged or missing.
■One NSM
■One Network Service Module Installation and Safety Guide
■One warranty card
Compatible Base Units
The following table lists NSMs and NSM-ready products. Ticks (!) indicate which
models are compatible.
AT-AR048 Support
The maximum DS3 packet forwarding rates are achieved only when the AT-AR048 is
installed in a Rapier 24iwhose serial number ends with the letter N or higher. If
maximum DS3 performance is not required, you can install the AT-AR048 in any
Rapier 24iwhose serial number ends in J, K, L, or M. You can find the serial number
on the underside of the switch (see the following figure).
Table 1: Compatibility of NSM models
Family Model(s) AR040 AR041 AR042 AR048
Rapier Rapier 8/8 (MT & SC) !!!
Rapier 16F-FX (MT-RJ & SC) !!!
Rapier 16Fi-FX (MT-RJ & SC) !!!
Rapier 24 !!!
Rapier iRapier 24i!!!!
AR800 Modular
Switching Router
AR816F-FX (MT-RJ & SC) !!!
AR824 !!!
AR Routers AR740 !!!
AR745 !!!

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Hot Swapping
There are two methods for installing and removing NSMs: the standard installation
method and the hot swap installation method. The software release running on your
switch or router determines which of these two methods should be used.
If your switch or router is running Software Version 2.2.3 or earlier, follow the
standard method. If your switch or router is running Software Version 2.3.1 or later,
you can use the hot swap method.
To find out which software release your switch or router is running, use the
command:
show install
The following installation procedure describes how to install an NSM using either
installation method.
Hot swapping an AT-AR040
Caution You cannot install PICs into an AT-AR040 NSM that has power applied to
it. This includes NSMs that have been deactivated using the hot swap button, but not
physically removed from the switch or router. To ensure that all power is removed
from the NSM bay, you must either physically remove it from the switch or router
(using the hot swap method), or disconnect all power sources to the switch or
router.
If you have PICs to install, follow the Port Interface Card Installation and Safety Guide. If
there are more PIC bays than PICs, use the bays on the switch or router base unit
first, then fill the NSM PIC bays starting with bay 0.
Please note that you can hot swap the AT-AR040 NSM with PICs already installed in
its PIC bays. There is no need to remove the PICs before hot swapping. See the
Network Service Module Hardware Reference for information on the operational
characteristics of hot swapped interfaces.
Made in Singapore
Model : AT-RP241-10
Part Number: 990-11934-10
Product Serial Number: S03K225N
Quantity With Unit of
Measure:
1 EA 7 67035 14875
5
N or higher for maximum DS3
performance
J, K, L, or M for less demanding
DS3 applications

6 Network Service Module
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Installing a Network Service Module
Warning Failure to follow this procedure when hot swapping an NSM will cause the
switch or router to crash, and may damage it and any files stored in Flash.
1. Read the safety information.
See the Installation and Safety Guide for your switch or router. A copy of this
guide can be found on the CD-ROM that came with your switch or router, or at
www.alliedtelesis.co.uk/site/products/ .
2. If you are not hot swapping, remove power to the switch or router.
Warning Be sure to disconnect the main power supply and the redundant
power supply before installing the NSM. Installing an NSM with the switch or
router powered ON can damage the NSM or base unit.
If you are hot swapping, prepare the NSM bay.
Warning Do not attempt to hot swap while the contents of Flash are being
modified; for instance, during Flash compaction or when files are being loaded
onto the switch or router. If the switch or router crashes while Flash is being
modified, configuration files, software release files, feature licenses and other files
may be damaged.
If the In Use LED (next to the NSM bay) is lit, use a pencil tip or similar object to
press the recessed Hot Swap button. The In Use LED should go out and the
Swap LED should light.
If the In Use LED remains lit or if neither the In Use nor Swap LED are lit, the
software release does not support hot swapping, and you must install the NSM
with the switch or router powered OFF.
3. Remove the switch or router NSM-bay face-plate or existing NSM.
If the switch or router does not have an NSM installed, remove the blank NSM-
bay face-plate by loosening the two M4 Phillips screws (see the following figure).
NSM 0
Hot Swap
In Use
Swap
NSM bay
with blanking plate
Base unit LEDs
for the NSM
captive screw captive screw

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If an NSM is already installed, disconnect its network cables and TNV lines
before removing it from the switch or router.
Remove the NSM by unscrewing both thumbscrews at the same time. As the
thumbscrews are turned, they will push the NSM out of the bay.
If the NSM has extractor levers, moving them to the open position will assist the
removal process (see the following figure).
When removing an NSM, take care to turn each thumbscrew by an equal
amount to ensure the NSM does not become misaligned. Forcing a jammed
thumbscrew may damage the NSM.
If a thumbscrew becomes tight, it must not be forced. Instead, screw it in or out
slightly to loosen it and then try again, taking care to unscrew both thumbscrews
at the same rate.
Keep the face-plate for future use. If you remove an NSM, replace the face-plate
to prevent dust and debris from entering the switch or router and to maintain
proper airflow.
4. Prepare the NSM.
In an antistatic environment, remove the NSM from its packing material. Be sure
to observe ESD precautions.
Warning Do not attempt to install an NSM without observing correct antistatic
procedures. Failure to do so may damage the switch, router, or NSM. If you are
unsure what the correct procedures are, contact your authorised Allied Telesis
distributor or reseller.
Open
Close

8 Network Service Module
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5. Slide the NSM into place.
Slide the NSM into the NSM bay, making sure the ends of the thumbscrews are
aligned with the screw holes on the switch or router.
If the NSM has extractor levers, they should be in the closed position.
6. Secure the NSM.
When the NSM has been firmly pushed into place, turn the NSM’s two
thumbscrews to engage their threads. Tighten both thumbscrews at the same
rate to pull the NSM into position.
The screws will tighten when the NSM panel is in its installed position. The
thumbscrews should be firm but not over-tight.
If one thumbscrew becomes tight before the other, loosen it slightly before
proceeding.
7. If you are not hot swapping, apply power to the switch or router.
Re-attach the power cord, and reconnect any redundant power supply. Check
that the switch or router power LED lights green.
Check the In Use LED. The In Use LED (on the switch or router rear panel)
lights to indicate the NSM is installed, is receiving power, and is operational.
If you are hot swapping, return the NSM bay to use.
Press the recessed Hot Swap button. The Swap LED will go out and the In Use
LED will light.
If the In Use LED lights only briefly and the Swap LED then lights continuously,
the NSM is of a type the software release does not support.
8. Verify the installation.
Use the show system command to verify the switch or router has recognised
the NSM. If there is no NSM entry in the output, recognition has failed.
If the In Use LED fails to light or recognition fails, repeat the installation process,
paying particular attention to steps 5 and 6.
If the reinstallation fails, see the Network Service Module Hardware Reference,
which has further troubleshooting information.

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LEDs and What They Mean
AT-AR040 LEDs
The AT-AR040 NSM unit does not have independent LEDs. See “Base Unit LEDs
related to NSMs” on page 10 for information about related LEDs found on the base-
unit switch or router.
AT-AR041 and AT-AR042 LEDs
LED State Function
Active Green Lit when the BRI has successfully completed the
exchange of INFO 1 and INFO 2 signals, and INFO
3 and INFO 4 signals are present on the link. This
means the ISDN interface is correctly connected
to a working NT device.
Off There is no connection to the ISDN, or the ISDN
has deactivated the connection.
Data Amber For on-demand ISDN, lit when there is a call up
over the respective B channel.
For permanent circuits, lit when HDLC packets are
being exchanged between the switch or router and
another TE end system device (normally another
switch or router) over the respective B (data)
channel.
Flashing Amber For on-demand ISDN, flashing when data is being
exchanged.
Off For on-demand ISDN, Off when there is no active
connection or when continuous data exchange is
occurring.
For permanent ISDN circuits, Off when no data
exchange is occurring.

10 Network Service Module
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AT-AR048 LEDs
Base Unit LEDs related to NSMs
The following table may be helpful when diagnosing possible NSM faults. Switches
and routers with NSM bays have these LEDs built into their chassis.
LED State Function
Active Green Lit when the Line Interface Unit (LIU) is receiving
a signal.
Loop Green Lit when any loopback is active.
LOS Amber Lit when the received signal is lost. This usually
indicates a network disruption, such as a cable
being disconnected or a device failure.
LOF Amber Lit when the DS3 framer cannot extract valid
frames from the received signal.
AIS Amber Lit when an Alarm Indication Signal is detected.
FERF Amber Lit when a Far End Receive Failure signal is
detected. This indicates the far end is receiving an
AIS, LOS, or LOF signal.
LED State Function
In Use (rear panel) Green An NSM is installed, is receiving power, and is
operational. The NSM and its PICs are not ready
for hot swap.
Off No NSM is installed or the NSM is not installed
correctly (the switch or router has not
recognised the NSM).
Swap (rear panel) Green The NSM and its PICs are ready to be hot
swapped.
Off The Hot Swap button must be pressed before the
NSM or its PICs can be hot swapped or the
software release does not support hot swapping.
Hot swapping is supported by Software Version
2.3.1 or later.