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Configuring LIM and LIM Port Redundancy

Configuring LIM redundancy

Stinger®

SHDSL 48-Port and 72-Port Line Interface Modules (LIM) Guide

2-11

Enabling LIM port redundancy

Redundancy for a particular slot and port is controlled by the

sparing-mode

parameter in the appropriate LIM profile.

The

sparing-mode

parameter appears in all LIM profiles, as in the following SDSL

profile for slot 2, port 6:

[in SDSL/{ shelf-1 slot-2 6 }]
name = 1:2:32
physical-address* = { shelf-1 slot-2 6 }
enabled = yes
sparing-mode = inactive
line-config = { 0 232 15 static { any-shelf any-slot 0 } singlebaud 784000
2720+

Manual LIM port redundancy

You can invoke the redundancy function manually by setting the

sparing-mode

parameter in the LIM profile to

manual

. The connection on the primary LIM is

transferred to the spare (secondary) LIM. To disable manual port redundancy, set the

sparing-mode

parameter to

inactive

.

If manual redundancy is currently in use, setting the parameter to

inactive

causes

the spare LIM port to become inactive again, terminating its connections and then
reestablishing them on the primary LIM port that was replaced.

For example, suppose a Stinger FS unit is equipped with an ADSL LIM in slot 1 and
an SDSL LIM in slot 4. Spare LIMs are located in slots 14 and 16 respectively. Port 2
fails on the ADSL LIM, and port 6 fails on the SDSL LIM. To provide redundancy for
these ports, proceed as follows:

1

Activate redundancy for failed port 2 in slot 1:

admin> read al-dmt {1 1 2}
admin> set sparing-mode = manual
admin> write
LOG notice, Shelf 1, Slot 8, Time: 11:58:49--

LIM 14 port 2 ACTIVATED as spare for LIM 1 Port 2

2

Activate redundancy for failed port 6 in slot 4:

admin> read sdsl {1 4 6}
admin> set sparing-mode = manual

Parameter

Specifies

sparing-mode

Enables or disables port redundancy and specifies the mode. You
can set the following port-redundancy modes:

■

inactive

—disables LIM port redundancy. This is the default.

■

manual

—deactivates the LIM port and then reestablishes the

connection on the same port of the spare LIM.

■

automatic

—activates automatic redundancy for the port. The

error threshold parameters specified in the

auto-lim-sparing-config

subprofile of the

lim-sparing-config

[slot number]

profile are used.

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Содержание Stinger STGR-LIM-48

Страница 1: ...Stinger SHDSL 48 Port and 72 Port Line Interface Modules LIM Guide For software version 9 3 170 June 2002 ...

Страница 2: ... this equipment according to EN 45014 access the Lucent INS online documentation library at http www lucentdocs com ins Safety compliance and warranty information Before handling any Lucent Access Networks hardware product read the Edge Access and Broadband Access Safety and Compliance Guide included in your product package See that guide also to determine how products comply with the electromagne...

Страница 3: ...tware version or release number Software and hardware options If supplied by your carrier service profile identifiers SPIDs associated with your line Your local telephone company s switch type and operating mode such as AT T 5ESS Custom or Northern Telecom National ISDN 1 Whether you are routing or bridging with your Lucent product Type of computer you are using Description of the problem Obtainin...

Страница 4: ......

Страница 5: ...guration 1 12 Binding two SHDSL ports 1 13 Displaying SHDSL port status 1 13 Configuring call control 1 14 Checking the status of an SHDSL interface 1 16 Checking the status of the physical interface 1 17 Obtaining statistics about operations 1 18 Diagnostic internal external and bit error rate tests 1 20 Configuring an internal diagnostic test IDT 1 22 Configuring a bit error rate test BERT 1 22 ...

Страница 6: ...s LIM Guide Contents Checking status with the Rearslot command 2 9 Configuring LIM port redundancy 2 9 Enabling LIM port redundancy 2 11 Manual LIM port redundancy 2 11 Automatic LIM port redundancy 2 12 Checking the status of extended LIM port redundancy 2 12 ...

Страница 7: ...terface Modules LIM Guide vii Figures Figure 1 3 SHDSL 72 port LIM 1 4 Figure 1 5 Digital loopback 1 23 Figure 1 6 Analog loopback 1 24 Figure 2 1 LIM redundancy in a Stinger FS unit 2 2 Figure 2 2 LIM port redundancy on a Stinger FS unit 2 10 ...

Страница 8: ......

Страница 9: ...nger SHDSL 48 Port and 72 Port Line Interface Modules LIM Guide ix Tables Table 1 1 SHDSL LIMS 1 1 Table 1 2 Specifications for the SHDSL 48 port and 72 port LIMs 1 2 Table 1 4 SHDSL LIM status lights 1 4 ...

Страница 10: ......

Страница 11: ...d a working knowledge of the command line interface You should understand the fundamental concepts of digital subscriber line DSL technology and be familiar with the relationship between DSL interfaces and associated configuration profiles Documentation conventions Following are the special characters and typographical conventions used in this manual Convention Meaning Monospace text Represents te...

Страница 12: ... only the information inside the brackets Do not type the brackets unless they appear in boldface Separates command choices that are mutually exclusive Points to the next level in the path to a parameter or menu item The item that follows the angle bracket is one of the options that appear when you select the item that precedes the angle bracket Key1 Key2 Represents a combination keystroke To ente...

Страница 13: ...Provides quick start instructions for configuring PNNI and soft PVCs SPVCs and describes the related profiles and commands in the Stinger command line interface Stinger SNMP Management of the ATM Stack Supplement Describes SNMP management of ATM ports interfaces and connections on a Stinger unit to provide guidelines for configuring and managing ATM circuits through any SNMP management utility Sti...

Страница 14: ......

Страница 15: ...aces per LIM The 72 port SHDSL LIM provides 72 SHDSL interfaces per LIM Introducing the SHDSL LIMs Stinger units support SHDSL LIMs with 48 and 72 ports each of which is available in two versions Table 1 1 list the SHDSL LIM models and the supported platforms Introducing the SHDSL LIMs 1 1 Installing the single pair high speed DSL SHDSL LIM 1 2 Module specifications 1 2 Status indicators 1 3 Confi...

Страница 16: ...ecifications Table 1 2 shows the specifications for the SHDSL 48 port and 72 port LIMs Stinger RT STGRRT LIM SL 48 48 port SHDSL LIM Stinger RT STGRRT LIM SL 72 72 port SHDSL LIM Table 1 1 SHDSL LIMS page 2 of 2 Platform Product code Description Table 1 2 Specifications for the SHDSL 48 port and 72 port LIMs page 1 of 2 Category Specification Physical dimensions Height 15 inches 38 1cm Width 1 06 ...

Страница 17: ... both models of the SHDSL LIM Figure 1 3 shows the front panel and status lights of the SHDSL 72 port LIM Interface standards ITU G 991 2 G shdsl Annex A North America Annex B Europe ETSI TS 101 524 similar to ITU Annex B implementation ITU G 994 1 G hs ITU G 997 1 physical layer management Range Maximum 24 000 feet with 24 AWG wire at 192Kbps Maximum 12 000 feet with 24 AWG wire at 2 312Mbps Tabl...

Страница 18: ... upon startup or restart then remain dark until the module passes its power on self test POST When the module passes its POST and becomes operational the ACTIVE light illuminates Table 1 4 explains SHDSL LIM status lights Table 1 4 SHDSL LIM status lights page 1 of 2 Light Color Indication STBY Orange The module is a designated spare The control module switches traffic to the module if one of the ...

Страница 19: ...t 1 the system creates profiles such as the following admin dir shdsl 18 06 20 1999 23 18 51 shelf 1 slot 1 1 1 1 1 18 06 20 1999 23 18 51 shelf 1 slot 1 2 1 1 2 18 06 20 1999 23 18 51 shelf 1 slot 1 3 1 1 3 18 06 20 1999 23 18 51 shelf 1 slot 1 4 1 1 4 18 06 20 1999 23 18 51 shelf 1 slot 1 5 1 1 5 18 06 20 1999 23 18 51 shelf 1 slot 1 6 1 1 6 18 06 20 1999 23 18 51 shelf 1 slot 1 7 1 1 7 18 06 20...

Страница 20: ... margin 2db snext margin disable rate mode auto min rate 72000 max rate 2312000 gshdsl standard network type north american annex a annexb anfp enabled no gshdsl psd type symmetric master binding port no Parameter Setting name Name of the interface The default value is the interface address in shelf slot item format for example 1 2 1 but you can assign a text string of up to 16 characters physical...

Страница 21: ...f unit Remote equipment must have opposite setting Specify one of the following values coe the default The unit is central office equipment COE cpe The unit is customer premises equipment CPE ntr enabled Enable or disable network time reference NTR capability Specify one of the following values no the default NTR capability is disabled yes NTR capability is enabled If the unit type parameter is se...

Страница 22: ... normal data or is in loopback mode Specify one of the following values none default The line is not being used for loopback testing analog The line is enabled for analog loopback testing You might need to terminate the DSL line with a 150 ohm resistor digital The line is enabled for digital loopback testing margin Noise margin value in decibels Specifying a value that is less than 6 decibels caus...

Страница 23: ...he maximum rate that the loop trains at Specify one of the following values 0db 1db 2db 3db 4db 5db 6db 7db 8db 9db 10db 10db 9db 8db 7db 6db 5db 4db 3db 2db 1db disable the default rate mode Specifies whether the line rate is fixed or automatic Specify one of the following values fixed The modem attempts to train only at the rate specified by the max rate parameter auto default The modem attempts...

Страница 24: ...0000 1288000 1544000 2056000 2312000 max rate Maximum rate at which the modem trains when rate mode is set to auto When rate mode is set to fixed the modem attempts to train only to the rate specified by this parameter You need only configure the central office equipment COE for the maximum rate value The modem uses a G 994 1 handshake protocol to communicate the maximum rate value to the customer...

Страница 25: ... asymmetric power spectral density at 776Kbps only This setting applies only if the rate mode parameter is set to fixed the max rate parameter is set to is 776000 and the network type parameter is set to north american annex a asymmetric 1544k psd The modem outputs an asymmetric power spectral density at 1544Kbps only This setting applies only if the rate mode parameter is set to fixed the max rat...

Страница 26: ...rce not eligible clock priority middle priority loop back none margin 2db snext margin disable rate mode auto min rate 72000 max rate 2312000 gshdsl standard network type north american annex a annexb anfp enabled no master binding port Specifies whether an SHDSL port is configured for binding to the next adjacent port Binding two SHDSL ports together aggregates their bandwidths together Binding i...

Страница 27: ...the master ports For Stinger 1 admin read shdsl 1 3 5 admin set enabled yes admin set line config rate mode fixed admin set line config master binding port yes admin set line config unit type coe admin write admin read shdsl 1 3 6 admin set enabled yes admin write For Stinger 2 admin read shdsl 1 2 1 admin set enabled yes admin set line config rate mode fixed admin set line config master binding p...

Страница 28: ...call control procedures you can configure a Stinger unit to allow connections to be established even when the line state is not fully up You can configure the unit to use these procedures system wide or on a per port basis on SHDSL LIMS The call control mechanism enables the Stinger unit to establish and maintain soft PVCs SPVCs across port state changes This feature allows xDSL subscribers to est...

Страница 29: ...he following values no the default The Stinger call control mechanism allows calls to be established if the line state is up and disallows calls if the line state is down yes The Stinger call control mechanism ignores the line state and allows calls to be established on a port as long as the specified slot is operational and the specified port is enabled In a LIM profile ignore lineup Whether the ...

Страница 30: ... Line is disabled active Multipoint is established spare physical address Indicates the shelf slot and port number of the spare redundant LIM sparing state Indicates the state of the redundancy function If redundancy is not enabled sparing none is the value If sparing is enabled and the LIM slot is a primary LIM the value can be primary active or primary inactive If sparing is enabled and the LIM ...

Страница 31: ...he shdsl profile interface type Whether the module is operating in SHDSL mode g shdsl HDSL2 mode hdsl2 or if the module is not an SHDSL LIM default dev line state Current state of the interface which can be one of the following port up Connected to CPE and data can be transferred test Line is in test mode start up handshake Startup handshake is occurring start up training Startup training is occur...

Страница 32: ...rely errored second 1 losw second 1 unavailable second 0 loop attenuation 10 snr 40 stur loop attenuation 2 stur snr 40 network type This lists current Standard Network type Possible values are annex a annex b annex b anfp Parameter Indicates Parameter Indicates line up timer How long the line has been up days hours and minutes in dd hh mm format rx signal present Whether a receiving signal is pre...

Страница 33: ... second Number of 1 second intervals for which the SHDSL line is unavailable The SHDSL line becomes unavailable at the onset of 10 contiguous severely errored seconds SES Ls Once unavailable the SHDSL line becomes available at the onset of 10 contiguous seconds with no SES Ls loop attenuation Current loop attenuation in decibels snr Signal to noise ratio on the line in decibels The signal to noise...

Страница 34: ...running normal data transmission is interrupted on the line The line diag profile contains the parameters that you use to configure a line for an IDT and a BERT Following is a listing of the profile shown with default values in LINE DIAG shelf 1 slot 2 1 physical address shelf 1 slot 2 1 bert timer 1 minute bert enable no idt enable no idt num of msg 1000 bert bit duration 6 power bert direction d...

Страница 35: ...ly to VDSL LIMs bert direction Applies only to VDSL LIMs Parameter Specifies bert operation state State of the BERT when it is enabled and the BERT timer has not expired This parameter reports one of the following states waiting for 511 sync Waiting for remote synchronization before starting the BERT local loop active The interface is in local analog loopback and is running the test No remote devi...

Страница 36: ...1 physical address shelf 1 slot 2 1 bert operation state stopped idt operation state stopped bert error counter 0 idt send count 1000 idt recv count 1000 idt error counter 0 If you attempt to change the setting of the idt enable parameter while an internal diagnostic test is active for a line the system generates a warning message as in the following example admin set idt enable no admin write LOG...

Страница 37: ...nd a data stream from an external device such as a network traffic generator through the trunk to the modem The modem loops back the data stream to the external device where it can be analyzed The loop back parameter is described in Configuring port settings for SHDSL on page 1 5 in SHDSL shelf 1 slot 2 1 line config loop back none You configure a line for external diagnostic testing by putting it...

Страница 38: ...analog loopback the data passes from the digital circuitry to analog circuitry and is then looped back as shown in Figure 1 6 Analog loopback tests more circuitry Figure 1 6 Analog loopback The following example puts a line into analog loopback mode admin read shdsl 1 1 1 SHDSL shelf 1 slot 1 1 read admin set loop back analog admin write DSL loop Analog hybrid circuitry Digital circuitry DSL loop ...

Страница 39: ...have either a path selector module PSM or copper loop test CLT module plugged in behind or next to it in place of a line protection module LPM All other LIMs must use an LPM with port redundancy LPM PR for line protection Note Some older Stinger units are equipped with an interface redundancy module IRM located behind the spare LIM and LPMs with redundancy LPM R located behind the LIMs to be backe...

Страница 40: ...s are terminated and reestablished on the spare secondary LIM When the redundancy function is disabled the spare LIM is deactivated Its logical connections are terminated and reestablished on the primary LIM Figure 2 1 illustrates LIM redundancy for a failed SDSL LIM in slot 4 of a Stinger FS chassis A Stinger LS chassis has its LPMs and PSMs or CLT modules next to its LIMs rather than behind them...

Страница 41: ...g profile admin read lim sparing config 1 14 0 LIM SPARING CONFIG shelf 1 slot 14 0 read admin list in LIM SPARING CONFIG shelf 1 slot 14 0 Parameter Specifies spare slot type Type of spare LIM installed in the slot This value is automatically detected and set by the software when the Stinger powers up sparing mode Enable disable redundancy You can enable two LIM redundancy modes inactive setting ...

Страница 42: ...o inactive causes the spare LIM to become inactive again terminating its connections and then reestablishing them on the primary LIM that was replaced For example referring to Figure 2 1 suppose that the SDSL LIM in slot 4 fails To enable the spare SDSL LIM in slot 16 proceed as follows admin read lim sparing config 1 16 0 LIM SPARING CONFIG shelf 1 slot 16 0 read admin set manually spared slot nu...

Страница 43: ... to their default values in LIM SPARING CONFIG auto lim sparing config lim sparing config 1 active yes error averaging period 10 error threshold 100 up down threshold 3 modem failure threshold 12 Parameter Setting active When redundancy mode is set to automatic this parameter enables or disables the LIM slot to participate in automatic LIM redundancy Only slots for which this parameter is set to y...

Страница 44: ...onfig subprofiles are numbered according to the LIM slot numbers the list 1 command here lists the LIM Sparing Config subprofile for the LIM in slot 1 Note that the active parameter is set to yes Because this is the default value for all seven slots you do not have to set it unless you have previously changed it 2 Set the redundancy mode admin list in LIM SPARING CONFIG shelf 1 slot 15 0 physical ...

Страница 45: ...anually for the slot number containing the spare LIM and IRM All the LIMs to be backed up must have either LPM Rs or LPM RPs installed in the slots behind or next to them When the profile is created the software automatically assigns a value to the spare slot type and spare slot number parameters For example if a Stinger unit has an SDSL LIM and an IRM installed in slot 16 and it also has an SDSL ...

Страница 46: ...ive yes lim status ok yes sparing state sparing none Parameter Indicates spare slot type Shelf slot and port number of the spare LIM sparing mode State of the redundancy function If redundancy is not enabled sparing none is the value If redundancy is enabled and the LIM slot is a primary LIM the value can be primary active or primary inactive If redundancy is enabled and the LIM slot is the second...

Страница 47: ... 0 Empty IRM LPM 6 0 Empty IRM LPM 7 0 Empty IRM LPM 10 0 Empty IRM LPM 11 0 Empty IRM LPM 12 0 Empty IRM LPM 13 0 Empty IRM LPM 14 93 Path Selector Module PSM 15 0 Empty IRM LPM 16 94 Copper Loop Tester CLT Midplane sparing bus usage 4 4 3 2 1 8765 4321 0987 6543 2109 8765 4321 0987 6543 2109 8765 4321 XXXX XXXX XXXX XXXX XXXX XXXX Configuring LIM port redundancy LIM port redundancy allows an ind...

Страница 48: ...SL LIM fails and is replaced As long as redundancy is active on that port no other failed SDSL or ADSL port 1 on that unit can be replaced by a spare LIM port For example port 2 on an ADSL LIM in slot 1 can be backed up by port 2 of the spare ADSL LIM in slot 14 A subsequent failure of port 6 on an SDSL LIM in slot 4 can be backed up by port 6 on the spare SDSL LIM in slot 16 This example is illus...

Страница 49: ... again terminating its connections and then reestablishing them on the primary LIM port that was replaced For example suppose a Stinger FS unit is equipped with an ADSL LIM in slot 1 and an SDSL LIM in slot 4 Spare LIMs are located in slots 14 and 16 respectively Port 2 fails on the ADSL LIM and port 6 fails on the SDSL LIM To provide redundancy for these ports proceed as follows 1 Activate redund...

Страница 50: ...y are found in the auto lim sparing config subprofile of the lim sparing config profile for the spare LIM of the same type For example suppose you want to set up automatic port redundancy for port 1 in an SDSL LIM in slot 5 with an error threshold of 50 The spare SDSL LIM is located in slot 16 of a Stinger FS The threshold parameters reside in the auto lim sparing config subprofile of the lim spar...

Страница 51: ...ber of spare LIM sparing state State of the redundancy function If redundancy is not enabled sparing none is the value If redundancy is enabled and the LIM slot is a primary LIM the value can be primary active or primary inactive If redundancy is enabled and the LIM slot is the secondary spare LIM the value can be secondary active or secondary inactive sparing change reason How redundancy is activ...

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