Link Configuration Mode Commands


Link Configuration Mode Commands
 
 
The Link configuration mode defines the MTP3 link parameters for a specific link in a linkset of an SS7 routing domain instance.
 
Important: The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).
 
arbitration
This command configures link arbitration.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
arbitration { active | passive }
no arbitration
active
The SSCOP initiates the transmission of PDUs.
passive
The SSCOP waits to receive PDUs.
no
Removes the arbitration configuration for the link.
Usage
Sets the configuration to initiate transmission of PDUs.
Example
arbitration active
 
end
Exits the current mode and returns to the Exec Mode.
Product
All
Privilege
Security Administrator, Administrator
Syntax
end
Usage
Change the mode back to the Exec Mode.
 
exit
Exits the current mode and returns to the previous mode.
Product
All
Privilege
Security Administrator, Administrator
Syntax
exit
Usage
Returns to the previous mode.
 
mtp2-lssu-len
This command sets the length of the link status signal unit (LSSU) which carries link status information used to manage link alignment and indicate the status of the signaling points to each other.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
mtp2-lssu-len #_octets
default mtp2-lssu-len
default
Using this keyword with the command resets the length to the default of 1 octet.
#_octets
Sets the number of octets for the length of the LSSU.
#_octets: Must be either 1 or 2.
Usage
Use this command to define the maximum amount of link status information that is to be shared between signaling points.
ExampleS
et the LSSU length to 2 octets - the maximum length.
mtp2-lssu-len 2
 
lmtp3-discard-priority
Configure MTP3 message discard priority.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
mtp3-discard-priority priority
default mtp3-discard-priority
default
Resets the priority to the default value.
priority
priority: must be an integer between 0 and 3.
Default is 0.
Usage
Use this command to manage MTP3 messaging.
Example
mtp3-discard-priority 2
 
mtp3-max-slt-try
Configure maximum number of times to retry SLT (signaling link test).
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
mtp3-max-slt-try retries
default mtp3-max-slt-try
default
Resets the number of retries to the default value.
retries
retries: must be an integer between 1 to 65535.
Default is 10.
Usage
Use this command to troubleshoot MTP3 link mismatch.
Example
mtp3-max-slt-try 35
 
mtp3-msg-priority
Configures the priority for sending MTP3 management messages.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
mtp3-msg-priority priority
default mtp3-msg-priority
default
Resets the number of priority to the default value.
priority
priority: must be an integer from 0 to .
Default is 0.
Usage
Use this command to set the priority for sending MTP3 management messages.
Example
mtp3-msg-priority 3
 
mtp3-msg-size
Configures the size of messages from layer 3 to layer 2..
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
mtp3-msg-size size
default mtp3-msg-size
default
Resets the the size to the default value which is 4096 (for q.2140) or 272 (for MTP2)
size
size: must be an integer from 1 to 4096.
Usage
Use this command to set the maximum message size, in bytes.
Example
mtp3-msg-size 4096
 
mtp3-p1-qlen
Configure the size for the MTP3 p1 queue length.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
mtp3-p1-qlen size
default mtp3-p1-qlen
default
Resets the number of size of the priority 1 queue to the default value.
size
size: integer from 1 to 65535. Size should be less than MTP3 p2 qlen and p3 qlen.
Default is 1024.
Usage
Use this command to configure the queue length threshold for raising the congestion priority to level 1.
Example
mtp3-p1-qlen 128
 
mtp3-p2-qlen
Configure the size of the priority 2 queue.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
mtp3-p2-qlen size
default mtp3-p2-qlen
default
Resets the number of size of the priority 2 queue to the default value.
size
size: integer from 1 to 65535. Size should be less than MTP3 p3 qlen and greater than p1 qlen.
Default is 1024.
Usage
Use this command to configure the queue length threshold for raising the congestion priority to level 2.
Example
mtp3-p2-qlen 256
 
mtp3-p3-qlen
Configure the size of the priority 3 queue.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
mtp3-p3-qlen size
default mtp3-p3-qlen
default
Resets the number of size of the priority 3 queue to the default value.
size
size: integer from 1 to 65535. Size should be greater than MTP3 p1 qlen and p2 qlen .
Default is 1024.
Usage
Use this command to configure the queue length threshold for raising the congestion priority to level 3.
Example
mtp3-p3-qlen 1024
 
mtp3-test-pattern
Configures the character string for the test message.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
mtp3-test-pattern pattern
default mtp3-test-pattern
default
Resets the pattern to the default value.
pattern
pattern: 1 to 15 alphanumeric characters.
Default is SGSN-ORIGINATED.
Usage
Use this command to define a test pattern string for the signalling link test match (SLTM).
Example
mtp3-test-pattern TEST1-HomeOffice
 
priority
Configures the MTP3 Link Priority.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
priority pri_value
no priority
no
Removes the priority configuration.
pri_value
pri_value: 0 represents highest priority and 15 represents the lowest priority.
Usage
Use this command to configure the link priority within the MTP3 link set.
Example
priority 2
 
signaling-link-code
Configures the signaling link code (SLC).
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
signaling-link-code code
no signaling-link-code
no
Removes the SLC configuration.
code
code: integer from 0 to 15.
Usage
Use this command to uniquely identify the signaling link to be used for MTP3 management messages.
Example
signaling-link-code 4
 
sscf-nni-n1
Configures the SSCF NNI N1.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
sscf-nni-n1 value
no sscf-nni-n1
default
Removes the sscf-nni-n1 configuration.
value
value: integer from 1 to 65535.
Default is 1000.
Usage
Use this command to identify the network-to-node interface (NNI) between the MTP3 and SSCOP layers.
Example
sscf-nni-n1 4064
 
sscop-max-cc
Configure the maximum value for the SSCOP connection control (CC) state variable.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
sscop-max-cc value
no sscop-max-cc
default
Removes the sscop-max-cc configuration.
value
value: integer from 1 to 65535.
Default is 4.
Usage
Use this command as part of the configuration responsible for managing the SSCOP connection. This command sets the number of times retries.
Example
sscop-max-cc 256
 
sscop-max-pd
Configures the maximum acceptable value for the SSCOP state variable VT(PD).
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
sscop-max-pd value
no sscop-max-pd
default
Removes the sscop-max-pd configuration.
value
value: integer from 1 to 65535.
Default is 500.
Usage
Use this command to define the maximum number of data PDUs transmitted between POLL PDUs.
Example
sscop-max-pd 2500
 
sscop-max-stat
Configures the maximum number of elements included in a status PDU.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
sscop-max-stat value
no sscop-max-stat
default
Removes the sscop-max-stat configuration.
value
value: integer from 3 to 65535. This parameter should be an odd integer greater than or equal to 3.
Default is 67.
Usage
Received in response to a POLL PDU, the STAT PDU includes information about the number of SD PDUs that have been received.
Example
sscop-max-stat 56000
 
timeout
This command enables configuration of an array of signaling and flow control timers - for MTP, SSCF, and SSCOP.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
timeout timer
no timeout timer
no
Adding no to the timeout command removes the timer configuration.
timer
Repeat the command as needed to configure all required timers.
mtp3-tmr-t1 - mtp3 t1 timer, default value is 500ms
mtp3-tmr-t12 - mtp3 t12 timer, default value is 800ms
mtp3-tmr-t13 - mtp3 t13 timer, default value is 800ms
mtp3-tmr-t14 - mtp3 t14 timer, default value is 2000ms
mtp3-tmr-t17 - mtp3 t17 timer, default value is 800ms
mtp3-tmr-t2 - mtp3 t2 timer, default value is 700ms
mtp3-tmr-t22 - mtp3 t22 timer, default value is 180s
mtp3-tmr-t23 - mtp3 t23 timer, default value is 180s
mtp3-tmr-t24 - mtp3 t24 timer, default value is 500ms
mtp3-tmr-t3 - mtp3 t3 timer, default value is 500ms
mtp3-tmr-t31 - mtp3 t31 timer, default value is 5s
mtp3-tmr-t32 - mtp3 t32 timer, default value is 10s
mtp3-tmr-t33 - mtp3 t33 timer, default value is 20s
mtp3-tmr-t34 - mtp3 t34 timer, default value is 60s
mtp3-tmr-t4 - mtp3 t4 timer, default value is 500ms
mtp3-tmr-t5 - mtp3 t5 timer, default value is 500ms
mtp3-tmr-t7 - mtp3 t7 timer, default value is 1000ms
sscf-nni-tmr-t1 - sscf nni t1 timer. default value is 5s
sscf-nni-tmr-t2 - sscf nni t2 timer. default value is 30s
sscf-nni-tmr-t3 - sscf nni t2 timer. default value is 10ms
sscop-tmr-cc - sscop cc timer. default value is 200ms
sscop-tmr-idle - sscop idle timer (UNI 3.1 only). default value is 100ms
sscop-tmr-keep-alive - sscop keep alive timer. default value is 100ms. For stability purposes, tmrKeepAlive >= tmrPoll and tmrKeepAlive < tmrNoResponse
sscop-tmr-no-rsp - sscop no response timer. default value is 1.5s. For stability purposes, tmrNoResponse > tmrKeepAlive
sscop-tmr-poll - sscop poll timer. default value is 100ms. For stability purposes, tmrPoll <= tmrKeepAlive
 
 

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