Allied Telesis Network Card AT AR040 10 User Manual

Network Service Module  
Hardware Reference  
AT-AR040  
AT-AR041  
AT-AR042  
AT-AR048  
 
Network Service Module  
Hardware Reference  
AT-AR040  
AT-AR041  
AT-AR042  
AT-AR048  
Download the complete document set from  
 
Network Service Module Hardware Reference  
Document Number C613-03022-00 REV K.  
© 2007 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 change specifications and other  
information 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, Inc. has been advised of, known, or should have known, the possibility  
of such damages.  
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Contents  
 
4
Network Service Module  
Devices Covered By This Document  
This Hardware Reference includes information on the following Network  
Service Modules (NSMs):  
AT-AR040, four Port Interface Card (PIC) expansion bays  
AT-AR041, eight ISDN Basic Rate S/T interfaces  
AT-AR042, four ISDN Basic Rate S/T interfaces  
AT-AR048, one unchannelised DS3 interface  
You can download the complete document set for NSMs, and for your switch  
or router, from www.alliedtelesis.com/support/software. For more  
information about the document set and other resources, see “Obtaining  
Compatible Switches and Routers  
The following table shows which NSMs are appropriate for different models of  
switch and router.  
Table 1: Compatible switches and routers for Network Service Modules (NSMs)  
Model(s)  
AR040  
AR041  
AR042  
AR048  
Rapier 8/8 (MT & SC) switch  
Rapier 16F-FX (MT-RJ & SC) switch  
Rapier 16Fi-FX (MT-RJ & SC) switch  
Rapier 24 switch  
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
Rapier 24i switch  
!
!
Rapier 48w switch  
AR816F-FX (MT-RJ & SC)  
modular switching router  
!
!
AR824 modular switching router  
AR740 router  
!
!
!
!
!
!
!
!
!
AR745 router  
AT-AR048 Support  
Maximum DS3 packet forwarding rates are achieved only when the AT-AR048  
is installed in a Rapier 48w switch, or a Rapier 24i switch whose 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 24i whose serial number ends in J  
or later. You can find the serial number on the underside of the switch (Figure 1  
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Hardware Reference  
5
Figure 1: Serial number label on the underside of a Rapier 24i  
Model : AT-RP241-10  
N or higher for maximum DS3  
performance  
Part Number: 990-11934-10  
Product Serial Number: S03K225N  
J, K, L, or M for less demanding  
DS3 applications  
Quantity With Unit of  
Measure:  
1 EA  
7 67035 14875  
5
Made in Singapore  
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6
Network Service Module  
Hardware Overview  
This section provides an overview of the hardware features of NSMs. NSMs are  
expansion options for switch and router models with an NSM bay. NSMs slot  
into a base-unit switch or router and either directly provide additional WAN  
interfaces, or provide expansion slots for Port Interface Cards (PICs).  
Hardware descriptions for your switch or router, Uplink Modules, and PICs  
can be found in their respective Hardware References. These documents can be  
Safety and conformance information can be found in the Installation and Safety  
Guide or Safety and Statutory Information booklet for your switch or router,  
which can be downloaded from www.alliedtelesis.com/support/software.  
Common Features  
The following hardware features are common to all NSM models.  
Environmental  
conditions  
Operating temperature range: 0 ºC to 40 ºC (32 ºF to 104 ºF)  
Storage temperature range: -25 ºC to 70 ºC (-13 ºF to 158 ºF)  
Relative humidity range: 5 to 95% non-condensing  
Regulatory AT-AR040  
Standards  
Listing: UL, cUL, TUV  
Safety: UL 60950-1, CAN/CSA-C22.2 No. 60950-1-03, EN60950-1,  
AS/NZS60950.1  
EMC: Radiated: EN55022 class A, FCC class A, VCCI class A,  
AS/NZS CISPR22 class A  
Immunity: EN55024  
AT-AR041 and AT-AR042  
Listing: TUV  
Safety: EN60950-1, AS/NZS60950.1  
EMC: Radiated: EN55022 class A, AS/NZS CISPR22 class A  
Immunity: EN55024  
Network interface: TBR3, ACA TS031, iDA ISDN 1  
AT-AR048  
Listing UL, cUL  
Safety: UL60950-1, CAN/CSA-C22.2 No. 60950-1-03  
EMC: Radiated: FCC Part 15 class A, IC-03 class A  
Network interface: ANSI T1.102, ANSI T1.404, ANSI T1.107, ANSI T1.231  
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Hardware Reference  
7
AT-AR040 NSM  
The AT-AR040 provides four Port Interface Card (PIC) expansion bays for  
installing PICs. The front panel of the AT-AR040 NSM is shown in Figure 2.  
The AT-AR040 NSM does not have LEDs.  
Figure 2: AT-AR040 NSM with three PICs installed  
Blank face-plate  
AT-AR024 ASYN4 PIC  
3
0
SYN  
Tx  
Rx  
D Data  
B Data  
Active  
N
T
AT-AR023 SYN PIC  
AT-AR020 PRI E1/T1 PIC  
nsm4pic3  
Supported Port Interface Cards (PICs)  
The following PICs can be installed in an AT-AR040 NSM:  
AT-AR020 PRI E1/T1, a single ISDN Primary Rate E1/T1 interface  
AT-AR021(S) BRI-S/T, a single ISDN Basic Rate S/T interface  
AT-AR021(U) BRI-U, a single ISDN Basic Rate U interface  
AT-AR023 SYN, a single 2Mbps synchronous interface supporting RS-232,  
X.21, and V.35 in DTE and DCE modes  
AT-AR024 ASYN4, four asynchronous ports  
AT-AR027 VoIP-FXS, two Foreign Exchange Voice over IP ports  
For more information about installing PICs, see the Port Interface Card  
Installation and Safety Guide, which is included with every PIC or can be  
For more information about the hardware features of PICs, constructing data  
cables, and verifying installation, see the Port Interface Card Hardware Reference,  
which can be downloaded from www.alliedtelesis.com/support/software.  
Guidelines and limits for installing PICs  
Observe the following guidelines and limits when installing PICs:  
Use the PIC bays on the switch or router first, before installing PICs into an  
AT-AR040 NSM.  
Fill any PIC bays in the base router starting at bay 0.  
Fill the PIC bays in the AT-AR040 NSM starting at bay 0.  
You can install a maximum of two AT-AR020 PRI E1/T1 PICs into an  
AT-AR040 NSM, and maximum of four total in a switch or router.  
If two AT-AR020 PICs are installed in an AT-AR040 NSM, PIC one must be  
installed in the lower row (bay 0 or 1) and the other PIC must be installed  
in the upper row (bay 2 or 3).  
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8
Network Service Module  
If an AT-AR020 PIC is installed in an AT-AR040 NSM, and operating in E1  
mode, you can not install an AT-AR021(S) or AT-AR021(U) PIC in the same  
row of the NSM.  
You can install a maximum of four AT-AR027 PICs in an AR745 router  
fitted with an AT-AR040 NSM.  
Avoid installing an AT-AR022 or AT-AR026 PIC in an AT-AR040 NSM.  
Performance of these interfaces may be reduced and packet loss may occur.  
Interface numbering  
For each interface type (e.g. BRI, PRI, SYN, ETH, PORT), interfaces are  
numbered starting at 0, in the following sequence:  
1. interfaces on the base switch or router  
2. interfaces on PICs installed in PIC bays on the base switch or router, starting  
with PIC bay 0  
3. interfaces on PICs installed in PIC bays on the AT-AR040 NSM, starting  
with NSM PIC bay 0, and ending with NSM PIC bay 3.  
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Hardware Reference  
9
AT-AR041 and AT-AR042 NSMs  
The AT-AR041 NSM provides eight ISDN Basic Rate S/T interfaces. The front  
panel of the AT-AR041 is shown in Figure 3.  
Figure 3: AT-AR041 NSM  
7
6
5
4
3
2
1
0
Active  
Data  
The AT-AR042 NSM provides four ISDN Basic Rate S/T interfaces. The front  
panel of the AT-AR042 is shown in Figure 4.  
Figure 4: AT-AR042 NSM  
3
2
1
0
Active  
Data  
The BRI ports use RJ-45 connectors and provide TE interfaces. There are two  
status LEDs per port. The functions of the LEDs are listed in Table 2.  
Table 2: 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  
Off  
For on-demand ISDN, flashing when data is being  
exchanged.  
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.  
The AT-AR041 and AT-AR042 support point-to-point links. Point to multi-  
point links are not supported.  
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10  
Network Service Module  
Basic Rate ISDN Interfaces  
Each Basic Rate S/T interface supports two 64kbit/s B channels and one  
16kbit/s D channel, and operates in TE mode only. The switch or router should  
be configured as a TE for normal operation.  
User-configurable jumpers provide 100line termination. By default, the  
jumpers are factory set to terminate Rx and Tx, bridging terminals 2 and 3  
(Figure 5 on page 10). To remove the line termination, move the jumpers so that  
they bridge terminals 1 and 2.  
Figure 5: Location of jumpers on BRI NSMs  
RJ45 and LED blocks  
Jumper set to Not Terminated  
Jumper set to Terminated  
(Factory default)  
There are two jumpers per port. The AT-AR041 NSM,  
therefore, has sixteen jumpers, while the AT-AR042 NSM has  
eight jumpers. Each pair of jumpers set the Termination for the  
port that they are closest to.  
You should install the termination jumpers (terminate Rx and Tx) if:  
termination is not provided by the building wiring, and  
the device is the only TE device on a Point-to-Point link between the NT  
and the TE, or the device is the last device on an S/T bus  
You should remove the termination jumpers (not terminate Rx and Tx) if:  
termination is provided by the building wiring, or  
the device is one of a number of devices on an S/T bus, and is not the last  
device on an S/T bus  
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Hardware Reference  
11  
If you are unsure of whether to terminate the line or not, contact your ISDN  
service provider or your authorised Allied Telesis distributor or reseller.  
Warning Do not attempt to change any jumpers on the NSM while the switch or  
router is connected to a power supply or a live network. Disconnect the mains  
power supply, any redundant power supply, and any cable attached to the ISDN  
ports of the NSM. Dangerous voltages may be present on some parts of the NSM  
board, even if the switch or router is powered off.  
The BRI interfaces use RJ-45 connectors. Table 3 shows the pinout of the BRI  
interfaces.  
Table 3: Pinout of the Basic Rate ISDN S/T interfaces  
Pin  
1
S/T Interface Functions  
-
2
-
3
TX+  
RX+  
RX-  
TX-  
-
4
5
6
7
8
-
ISDN S/T Interface Cables  
Figure 6 on page 11 shows how to wire a cable to connect a Basic Rate Interface  
(BRI) to the ISDN network terminating equipment (NT).  
Figure 6: Pin wiring diagram for an ISDN Basic Rate straight-through Interface cable  
RJ45  
RJ45  
(to NT)  
(to switch or router)  
Not connected  
Not connected  
Not connected  
Not connected  
1
2
3
6
5
4
7
8
1
2
3
6
5
4
7
8
TX+  
TX-  
RX-  
RX+  
RX+  
RX-  
TX-  
TX+  
Not connected  
Not connected  
Not connected  
Not connected  
Notes:  
(1)  
(2)  
(3)  
(4)  
Output from switch or router; Input to switch or router.  
Use twisted pair cable, with pairs 3 and 6, and 4 and 5.  
Each wire is connected to the same pins at each end.  
Cable version 1.0.  
BRI1NT  
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12  
Network Service Module  
Testing an AT-AR041 or AT-AR042 NSM  
The Test Facility is built into the AlliedWare operating system, and is the best  
method to verify the correct operation of the BRI interfaces on the AT-AR041  
and AT-AR042 NSMs. Testing can be performed while the switch or router is  
operational, but any interfaces being tested are dedicated to the Test Facility.  
For more information about the Test Facility, see the Test Facility chapter of the  
®
AlliedWare Operating System Software Reference.  
When testing BRI interfaces using the Test Facility, a loopback plug must be  
inserted into each interface being tested. The loopback plug connects the  
output pins on the interface to the input pins so that any data transmitted over  
the interface is looped back (hence loopback plug) and received at the same  
interface. Figure 7 on page 12 shows how to construct loopback plug to test the  
BRI interfaces.  
Figure 7: BRI S/T loopback plug  
BRI Loopback Plug (RJ45 connector)  
8 7 6 5 4 3 2 1  
1 Not connected  
2 Not connected  
TX+  
RX+  
RX-  
TX-  
3
Switch end view  
of plug  
4
5
6
7 Not connected  
8 Not connected  
BRILOOPsw  
To test a specific AT-AR041 or AT-AR042 interface, insert a BRI S/T loopback  
plug into the interface and enter the command:  
enable test interface=brin  
where n is the interface number.  
To test all AT-AR041 or AT-AR042 interfaces at once, insert BRI S/T loopback  
plugs into all NSM BRI interfaces and enter the command:  
enable test interface=expansion  
Tests run for 4 minutes. Test status and results can be viewed at any time, using  
the command:  
show test  
which produces a display like that shown in Figure 8 on page 13.  
The status of the tests for each interface will be shown in the right-most column  
of the output. For more information on the meanings of the other figures, see  
®
the Test Facility chapter of the AlliedWare Operating System Software Reference  
for your switch or router.  
If you are unsure about running the Test Facility, or have difficulty evaluating  
the results, contact your authorised Allied Telesis distributor or reseller.  
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Hardware Reference  
13  
Figure 8: Example output from the show test command  
Board  
ID Bay Board Name  
Host Id Rev  
Serial number  
-------------------------------------------------------------------------------  
Base  
PIC  
NSM  
78  
AR740  
M1-15 46625812  
M1-1 5918255  
P1-3 46624968  
38 0 AT-AR023-00 PIC Sync  
95  
AT-AR041-00 NSM 8BRI  
Duration  
Details  
Interface State  
Result  
Type (minutes) Data( %OK ) Control  
-----------------------------------------------------------------------------  
eth0  
eth1  
syn0  
complete good  
trans  
TP  
ENDEC  
MAC  
trans  
TP  
ENDEC  
MAC  
0
-
-
-
1 good(100.0) -  
1 good(100.0) -  
1 good(100.0) -  
complete good  
0
-
-
-
2 good(100.0) -  
0
2 good(100.0) -  
-
-
-
testing wait continuous  
RS-232dte 355 good(100.0) good  
dce 355 good(100.0) good  
X.21 dte 354 good(100.0) good .  
dce  
0
-
-
-
V.35 dte 354 good(100.0) good  
dce  
0
4
-
-
-
-
-
-
asyn0 complete check this screen  
asyn1 complete good  
-
-
-
-
-
-
-
-
-
-
4 good(100.0) good  
4 good(100.0) -  
4 good(100.0) -  
4 good(100.0) -  
4 good(100.0) -  
4 good(100.0) -  
4 good(100.0) -  
4 good(100.0) -  
4 good(100.0) -  
BRI0  
BRI1  
BRI2  
BRI3  
BRI4  
BRI5  
BRI6  
BRI7  
complete good  
complete good  
complete good  
complete good  
complete good  
complete good  
complete good  
complete good  
-----------------------------------------------------------------------------  
For more complete testing, connect the BRI interface to an external ISDN test  
device or NT mode device and use the enable bri ctest command and the  
disable bri ctest command from the Integrated Services Digital Network (ISDN)  
®
chapter the AlliedWare Operating System Software Reference. This test will  
execute conformance loopback tests and generate packets. If a test fails, please  
contact your authorised Allied Telesis distributor or reseller.  
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14  
Network Service Module  
AT-AR048 NSM  
The AR048 NSM provides a single unchannelised DS3 interface with two BNC  
connectors for transmit and receive. The front panel of the AT-AR048 NSM is  
shown in Figure 9 and the functions of the LEDs are described in Table 4.  
Figure 9: AT-AR048 NSM  
RX  
TX  
LOS  
LOF  
AIS  
Loop  
Activity  
FERF  
Table 4: AT-AR048 LEDs  
LED  
State  
Green  
Green  
Amber  
Function  
Active  
Loop  
LOS  
Lit when the Line Interface Unit (LIU) is receiving a signal.  
Lit when any loopback is active.  
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  
Amber  
Lit when an Alarm Indication Signal is detected.  
FERF  
Lit when a Far End Receive Failure signal is detected. This indicates  
the far end is receiving an AIS, LOS, or LOF signal.  
DS3 Interface  
The AT-AR048 NSM provides a single standards-based unchannelised DS3  
interface. The interface has the following features:  
44.736Mbit/s interface rate, 44.210Mbit/s payload data rate  
Separate transmit (Tx) and receive (Rx) BNC connectors  
75impedance  
B3ZS line encoding  
Automatic compensation for lines up to 135m (450feet)  
Loop or internal timing  
C-bit framing  
Support for PPP and Frame Relay encapsulation  
The interface meets the following specifications:  
ANSI T1.103, Digital Hierarchy - Synchronous DS3 Format  
ANSI T1.107, Digital Hierarchy - Formats  
ANSI T1.231, Digital Hierarchy - Layer 1 In-Service Digital  
RFC 2496 (DS3 MIB)  
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Hardware Reference  
15  
DS3 Interface Cables  
Use 75RG59 coaxial cables with BNC connectors. Two cables are required,  
one for transmit and one for receive. Neither cable should exceed 135m  
(455feet) in length.  
Testing an AT-AR048 NSM  
The Test Facility is built into the AlliedWare operating system, and is the best  
method to verify the correct operation of the DS3 interface on the AT-AR048  
NSM. Testing can be performed while the switch or router is operational, but  
any interfaces being tested are dedicated to the Test Facility. For more  
information about the Test Facility, see the Test Facility chapter of the  
®
AlliedWare Operating System Software Reference.  
To test an AT-AR048 DS3 interface, connect a 75RG59 cable between the  
transmit and receive BNC connectors, and enter the command:  
enable test interface=ds3n  
where n is the interface number.  
Alternatively, enter the command:  
enable test interface=expansion  
Tests run for 4 minutes. Test status and results can be viewed at any time, using  
the command:  
show test  
which produces a display like that shown in Figure 10.  
Figure 10: Example output from the show test interface command for a DS3 interface  
Board  
ID Bay Board Name  
Host Id Rev  
Serial number  
-------------------------------------------------------------------------------  
Base  
NSM DS3 187  
114  
AT-RP24i Rapier 24i  
AT-AR048 NSM DS3  
M2-0 41376726  
M1-1 49986061  
Duration  
Details  
Interface State  
Result  
Type (minutes) Data( %OK ) Control  
-----------------------------------------------------------------------------  
DS30 complete good 4 good(100.0) -  
-
-----------------------------------------------------------------------------  
A more detailed output (with frame counts) can be displayed with the  
command:  
show test interface counter  
which produces a display like that shown in Figure 11 on page 16.  
For more information on the meanings of the output, see the see the Test Facility  
®
chapter of the AlliedWare Operating System Software Reference. If you are unsure  
about running the Test Facility, have difficulty evaluating the results, or if a test  
fails, contact your authorised Allied Telesis distributor or reseller.  
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16  
Network Service Module  
Figure 11: Example output from the show test interface counter command for a DS3 interface  
Board  
ID Bay Board Name  
Rev Serial number  
----------------------------------------------------------------------------  
Base  
NSM DS3  
114  
187  
AT-RP24i Rapier 24i  
AT-AR048 NSM DS3  
M2-0 41376726  
M1-1 49986061  
Duration  
Frame Counters  
Interface State  
Type (minutes)  
Tx  
RxTotal  
RxGood  
RxBad  
--------------------------------------------------------------------------------  
DS30 complete - 4 001045030 001045030 001045030 000000000  
--------------------------------------------------------------------------------  
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Hardware Reference  
17  
LEDs and What They Mean  
The following LEDs report operations and faults on NSMs and related  
hardware:  
LEDs on the...  
Are described in ...  
Switch and router base unit  
AT-AR041 NSM  
AT-AR042 NSM  
AT-AR048 NSM  
AT-AR020 PRI E1/T1 PIC  
AT-AR021(S) BRI-S/T PIC  
AT-AR022 ETH PIC  
AT-AR023 SYN PIC  
AT-AR026 4ETH PIC  
AT-AR027 VoIP-FXS PIC  
The AT-AR040 NSM has no independent LEDs. See Table 5 for information  
about related LEDs found on the base switch or router.  
Switch and Router LEDs for NSMs  
The following LEDs on switches and routers with NSM bays report operations  
and faults on installed NSMs.  
Table 5: Switch and Router LEDs for NSMs  
LED  
State  
Function  
In use  
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  
Green  
Off  
The NSM and its PICs are ready to be hot swapped.  
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.  
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18  
Network Service Module  
PIC LEDs  
The following LEDs report operations and faults on PICs, and may be helpful  
when diagnosing possible AT-AR040 NSM operational faults. The LEDs are  
located on the faceplate of the respective PIC. The AT-AR024 ASYN4 PIC does  
not have LEDs.  
Table 6: AT-AR020 PRI E1/T1 PIC LEDs  
LED  
Function  
D Data  
[ISDN mode only] Lit when HDLC packets are being exchanged between the  
switch or router and the ISDN switch over the D (signalling) channel.  
B Data  
Lit when HDLC packets are being exchanged between the switch or router  
and another end system device (normally another switch or router) over any  
of the B (data) channels.  
Active  
NT  
Lit whenever operational (i.e., no RAI or AIS set) frames are being received  
on the respective interface (PRI 0 or PRI 1) from another source.  
[ISDN mode only] Lit when the PRI1 is operating in NT mode. This LED  
should not be lit during normal operation.  
Table 7: AT-AR021(S) BRI-S/T PIC LEDs  
LED  
Function  
B1, B2  
For on-demand ISDN, lit when there is a call up over the respective B  
channel and flashing when data is being exchanged.  
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.  
Active  
D
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 that the ISDN interface is correctly connected to a working NT  
device.  
Lit when HDLC packets are being exchanged between the switch or router  
and the ISDN switch over the D (signalling) channel.  
Table 8: AT-AR021(U) BRI-U PIC LEDs  
LED  
Function  
B1, B2  
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.  
For ISDN, lit when there is a call up over the respective B channel and  
flashing when data is being exchanged.  
Active  
D
Lit when the U interface is in the Activated state (i.e., it is in a fully  
operational at layer 1).  
Lit when HDLC packets are being exchanged between the switch or router  
and the ISDN switch over the D (signalling) channel.  
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Hardware Reference  
19  
Table 9: AT-AR023 SYN PIC LEDs  
LED  
Tx  
Function  
Lit when data is being transmitted over the synchronous interface.  
Lit when data is being received on the synchronous interface.  
Rx  
Table 10: AT-AR026 4ETH PIC LEDs  
LED  
Left  
Function  
Lit when the port is operating at 100Mbps and full duplex.  
Right  
Lit when a link has been established. Flashing when data is being  
transmitted through the port.  
Table 11: AT-AR027 VoIP-FXS PIC LEDs  
LED  
State  
Off  
Function  
Off Hook/Ring  
The port is on-hook.  
Green  
Flashing  
Off  
The port is off-hook.  
An incoming call is present on the port.  
PIC Reg  
The PIC is not registered with a gatekeeper and external  
phone calls cannot be made.  
Flashing  
The PIC is registered with a gatekeeper or gatekeeper  
has been set to “None”. External calls can only be made  
if the PIC is registered with a gatekeeper.  
PIC Error  
Off  
The PIC is okay.  
Green  
An internal error has occurred. Reset the PIC using the  
reset voip command.  
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20  
Network Service Module  
Hot Swapping  
Hot swapping is the installation or removal of a component such as an NSM  
without powering down or restarting the switch or router.  
NSMs can be hot swapped in and out of switches and routers that are running  
Software Version 2.3.1 or later. To find out which software version your switch  
or router is running, use the command:  
show system  
See the Network Service Module Installation and Safety Guide for instructions on  
how to hot swap your NSM.  
Hot Swapping the AT-AR040 NSM with PICs  
Caution You cannot hot swap PICs. Before installing or removing a PIC from a  
PIC bay in a switch or router, you must disconnect all power sources to the  
switch or router. To install or remove a PIC from an AT-AR040 NSM, you must  
first either physically remove the NSM from the switch or router using the hot  
swap method, or disconnect all power sources to the switch or router.  
You can hot swap the AT-AR040 NSM with PICs installed in its PIC bays. There  
is no need to remove the PICs before hot swapping the NSM.  
When an AT-AR040 NSM with PIC cards is hot swapped out, and an identical  
combination of AT-AR040 and PICs is hot swapped into the same bay, the  
software configurations for the PIC interfaces are preserved across the hot  
swap. In this case, software modules configured to the PIC interfaces transfer  
to the newly swapped in interfaces.  
When an AT-AR040 NSM with PICs is hot swapped out and a different  
combination of AT-AR040 and PICs is hot swapped into the same bay, new  
interface instances are created for any new PIC types or PIC types that are in  
different bays, and the old interface instances are discarded. For any PIC in the  
combination that is replaced by a PIC of the same type, interface instances are  
preserved.  
Behaviour of Hot Swapped Interfaces  
When an NSM is hot swapped out, its interface instances become dormant.  
They stay dormant until either another interface of the same type is hot  
swapped into the bay, in which case they are reactivated, or an interface of a  
different type is hot swapped into the bay, in which case they are discarded.  
Dormant interfaces are included in the show interface command output  
(Figure 12 on page 21 and Figure 13 on page 21) and in the SNMP interfaces  
MIB, marked as swapped out. In other switch or router commands, however,  
the switch or router behaves as though dormant interfaces do not exist.  
Instances of higher-level modules such as LAPD, Q931, ISDN call control, PPP,  
and IP do not become dormant when an interface becomes dormant. Instead  
they behave as if the interface has stopped communicating, for example, as if  
the cable has been unplugged.  
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Hardware Reference  
21  
The configuration script is not scanned for commands relating to hot-inserted  
interfaces until the switch or router is restarted. These interfaces must be  
configured manually.  
The switch or router does not update the MAC address of any hot-swapped  
Ethernet interface until the switch or router is restarted.  
All other commands that show or set interface properties behave as if swapped  
out interfaces do not exist. Commands that operate on multiple interfaces skip  
swapped out interfaces. Commands specified explicitly to a dormant interface  
display an error message.  
Figure 12: Example output from the show interface command  
Interfaces  
sysUpTime:  
00:00:46  
DynamicLinkTraps.....Disabled  
TrapLimit............20  
Number of unencrypted PPP/FR links.....0  
ifIndex Interface  
ifAdminStatus ifOperStatus  
ifLastChange  
------------------------------------------------------------------------------  
1
2
3
4
eth0  
eth1  
bri0  
eth2  
Up  
Up  
Up  
Up  
Up  
Down  
Swapped out  
Swapped out  
00:00:03  
00:00:00  
00:00:43  
00:00:42  
------------------------------------------------------------------------------  
Interface name summary  
Interface Full name  
------------------------------------------------------------------------------  
asyn0  
asyn1  
eth0  
asyn0  
asyn1  
eth0  
eth1  
eth1  
------------------------------------------------------------------------------  
Figure 13: Example output from the show interface command for a specific interface  
Interface.................. bri0  
ifIndex.................. 3  
ifMTU.................... 1712  
ifSpeed.................. 144000  
ifAdminStatus............ Up  
ifOperStatus............. Swapped out  
ifLinkUpDownTrapEnable... Disabled  
TrapLimit................ 20  
Interface Counters  
ifInOctets .................. 52190  
ifInUcastPkts ................ 3070  
ifInNUcastPkts .................. 0  
ifInDiscards .................... 0  
ifInErrors ...................... 0  
ifOutOctets ................. 52190  
ifOutUcastPkts ............... 3071  
ifOutNUcastPkts ................. 0  
ifOutDiscards ................... 0  
ifOutErrors ..................... 0  
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22  
Network Service Module  
Troubleshooting  
This section provides information on how to detect and resolve problems with NSMs.  
Performing the following tasks will eliminate the most common faults.  
1. Check that the NSM is correctly installed. See the Network Service Module  
Installation and Safety Guide for a step by step guide to installing NSMs.  
2. Make sure the power cord is securely connected to the switch or router and  
the power outlet.  
3. Check that the power supply voltage to the switch or router is stable.  
4. Check that the correct data cables are being used and that their connections  
are secure.  
5. Make sure that other network devices are working properly.  
6. Use the show install command to check that the latest software release is  
®
loaded. The AlliedWare Operating System Software Reference for your switch  
or router has more information about obtaining and installing the latest  
software release.  
7. If the switch or router is malfunctioning, reboot it by pressing the recessed  
Reset button or entering the command restart reboot. Alternatively, power  
off and on the switch or router by disconnecting and reconnecting the main  
power supply and, if connected, the RPS power.  
Other sources of troubleshooting information are:  
The Installation and Safety Guide or Quick Install Guide for your switch or  
router, which can be downloaded from  
The Hardware Reference for your switch or router, which can be  
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Hardware Reference  
23  
Obtaining Documentation and Resources  
Document set The complete document set for Network Service Modules includes:  
this Hardware Reference, which contains detailed information on the  
hardware features of Network Service Modules  
the Network Service Module Installation and Safety Guide, which describes  
how to install a Network Service Module  
the Port Interface Card Installation and Safety Guide, which describes how to  
install a Port Interface Card  
the Port Interface Card Hardware Reference, which contains detailed  
information on the hardware features of Port Interface Cards  
the Installation and Safety Guide, or Quick Install Guide and Safety and  
Statutory Information for your switch or router, which describes how to  
install the switch or router and includes important safety and statutory  
information  
the Hardware Reference for your switch or router, which contains detailed  
information on the hardware features of your switch or router  
the AlliedWare® Operating System Software Reference for your switch or  
router, which contains detailed information on configuring WAN and  
routing protocols to use PICs  
You can download these documents and updates from  
You need Adobe® Acrobat® Reader® to view, search, or print these  
documents. You can download it from www.adobe.com.  
Other resources How-To Notes describe a range of standard Allied Telesis solutions, and  
include technical tips and guides to configuring specific hardware and  
software features. You can download the latest How-To Notes from  
MIBs supported by Allied Telesis products can be downloaded from  
Microsoft® Visio® stencils for Allied Telesis products can be downloaded from  
AT-TFTP Server for Windows is a TFTP (Trivial File Transfer Protocol) server for  
transferring software versions, configuration scripts and other files between a  
PC and your switch or router. You download AT-TFTP Server from  
CD-ROM Some products ship with a Documentation and Tools CD-ROM, which includes:  
the complete document set  
Adobe® Acrobat® Reader®  
AT-TFTP Server  
Supported MIBs  
How-To Notes, white papers, Microsoft® Visio® stencils and other  
resources  
Tryouts of networking software  
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24  
Network Service Module  
Contacting us With locations covering all of the established markets in North America, Latin  
America, Europe, Asia, and the Pacific, Allied Telesis provides localized sales  
and technical support worldwide. To find the representative nearest you, visit  
us on the Web at www.alliedtelesis.com.  
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