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This chapter describes the function and displays the syntax for basic commands that can be used to configure and monitor the Airline Product Set. For more information about defaults and usage guidelines, see the corresponding chapter of the Bridging and IBM Networking Command Reference.
Use the alps a1-map a2-map ALPS ASCU submode command to specify the A1 and A2 logical ASCU identification information.
alps a1-map a1-value a2-map a2-value
a1-value | A1 logical ASCU identification. A hexadecimal number in the range 0x00 to 0x7F, except 0x10, 0x16, and 0x17. |
a2-value | A2 logical ASCU identification. A hexadecimal number in the range 0x00, 0x10, 0x16, 0x17, 0x40, 0x50, 0x51, 0x52, and 0x53. |
Use the alps ascu interface configuration command to specify a physical ASCU identity. Use the no form of this command to remove the ASCU from the interface and delete any messages queued for transmission to the ASCU or the network.
alps ascu id
id | ASCU interchange address. Valid range is between 41 and 7E, except 43, 44, 47, 50 to 57, 60, 64, and 7B. |
Use the alps circuit global configuration command to specify an ALPS circuit at the remote CPE across a TCP/IP connection. Use the no form of this command to remove the circuit definition from the configuration, send a close message on the ALPS circuit, and delete any queued messages for the circuit.
alps circuit name
name | Name given to identify an ALPS circuit. |
Use the alps connection-type permanent ALPS circuit submode command to specify that this circuit should be established when the circuit is enabled.
alps connection-type permanent retry-timer
retry-timer | Specifies the maximum interval between consecutive attempts to establish a circuit in the event of a failure. The default for retry-timer is 30 seconds and the range is 1 to 180 seconds. |
Use the alps default-ckt ALPS ASCU submode command to specify the ALPS circuit that this ASCU uses.
alps default-ckt name
name | Name given to identify an ALPS circuit on the remote CPE. |
Use the alps enable-alarms ascu global configuration command at the remote CPE to enable alarms for the ALPS ASCUs. Use the no form of this command to disable alarms for the ALPS ASCUs.
alps enable-alarms ascu [interface id]
interface id | (Optional) ASCU identifier. Enable alarms for the specified ASCU. |
Use the alps enable-alarms circuit global configuration command to enable alarms for the ALPS circuits. Use the no form of this command to remove the circuit definition from the configuration.
alps enable-alarms circuit name
name | Name given to identify an ALPS circuit on the remote CPE. |
Use the alps enable-alarms peer global configuration command to enable alarms for the ALPS peers. Use the no form of this command to remove the circuit definition from the configuration, send a close message on the ALPS circuit, and delete any queued messages for the circuit.
alps enable-alarms peer ip-address
ip-address | IP address of the remote peer for which alarms are enabled. |
Use the alps enable-ascu ALPS ASCU submode command to move the previously defined ASCU from the inactive poll list to the active poll list. This move results in the protocol handler polling the ASCU and rendering it ready for handling terminal traffic. Use the no form of this command to remove the ASCU from the active poll list to the inactive poll list. This action prevents the ASCU from being polled, rendering it not ready for handling terminal traffic.
alps enable-ascuUse the alps enable-circuit ALPS circuit submode command to enable the circuit to be activated when data is received from an ASCU. Use the no form of this command to disable the circuit.
alps enable-circuitUse the alps error-display ALPS ASCU submode command to specify where error messages about service availability or network problems are displayed. Use the no form of this command to return to the default values.
alps error-display number1 number2
number1 | For ALC, specifies the terminal address where these service messages are to be sent. Valid numbers are hexadecimal numbers in the range 0x40 to 0x7F. The default address is 0x72. |
number2 | For ALC, specifies the screen line number where service messages are to be displayed. Valid numbers are hexadecimal numbers in the range 0x40 to 0x7F. The default screen line number is 0x66. |
Use the alps host-hld host-link interface configuration command to enable ALPS on the X.25 interface. Use the no form of this command to disable ALPS on the X.25 interface.
alps host-hld hld host-link num {ax25 [damp-tmr value] | emtox x.121} [life-tmr value]
hld | Host high-level designator. A hexadecimal number in the range |
num | Host-link identifier. A number in the range 1 to 255. |
ax25 | Specifies airline X.25 implementation of X.25. |
damp-tmr value | (Optional) Specifies the AX.25 PVC damping timer. The value argument is the length of time that a PVC can be inactive before it is destroyed and the corresponding ALPS circuits are closed. The default is 10 seconds. |
emtox | Specifies EMTOX implementation of X.25. |
x.121 | X.121 address of the EMTOX host (called address on calls to the EMTOX host). |
life-tmr value | (Optional) Specifies the maximum amount of time (in seconds) that a message may be queued for transmission to the host X.25 system before it is discarded. The value argument is time (in seconds). |
Use the alps hostlink ALPS circuit submode command to specify information required to establish an X.25 virtual circuit at the central CPE. Use the no form of this command to remove the circuit definition from the configuration, send a close message on the ALPS circuit, and delete any queued messages for the circuit.
alps hostlink number {ax25 lcn | emtox x121-addr} [winout val1] [winin val2] [ops val3]
number | Interface at the host CPE. Decimal number in the range 1 to 255. |
ax25 | Specifies airline X.25 implementation of X.25. |
lcn | Local channel number for AX.25 connections. |
emtox | Specifies EMTOX implementation of X.25. |
x121-addr | X.121 address for EMTOX connections.This is the X.121 calling address for X.25 call packets sent from the central CPE to the EMTOX host. |
winout val1 | (Optional) Specifies the X.25 transmit window The val1 argument is a decimal number in the range 1 to 7. |
winin val2 | (Optional) Specifies the X.25 receive window. The val2 argument is a decimal number in the range 1 to 7. |
ops val3 | (Optional) Specifies the maximum output packet size. The val3 argument is one of the following numbers: 128, 240, 256, 512, 1024, 2048, or 4096. |
ips val4 | (Optional) Specifies the maximum input packet size. The val4 argument is one of the following numbers: 128, 240, 256, 512, 1024, 2048, or 4096. |
Use the alps idle-timer ALPS circuit submode command to specify (for dynamic circuits) the length of time that can elapse before an idle circuit is disabled. Use the no form of this command to return to the default idle-timer value.
alps idle-timer timer
timer | Length of time that can elapse before an idle circuit is brought down. The range is 10 to 600 seconds. The default is 60 seconds. |
Use the alps keepalive global configuration command to enable TCP keepalives for ALPS TCP peer connections. A TCP keepalive request will be sent to the remote peer if the TCP connection to the remote peer is silent for a time period larger than the interval specified. The TCP connection to the ALPS host will be closed when a count equal to the retry count specified is missed consecutively. Use the no form of this command to disable keepalives for ALPS.
alps keepalive [interval time] [retry count]
interval time | (Optional) Interval for keepalive requests. The time argument is the keepalive interval, in the range of 10 to 300 seconds. The default is 30 seconds. |
retry count | (Optional) Indicates how many times keepalive requests will be sent before the connection is closed. The count argument is the retry count, in the range 1 to 10. The default is 3 retries.
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Use the alps lifetime-timer ALPS circuit submode command to specify the maximum amount of time messages can be queued in the ALPS circuit queue awaiting transmission to the central CPE. Use the no form of this command to return to the default lifetime-timer value.
alps lifetime-timer timer
timer | Length of time, in seconds, that a message can be queued. The range is 1 to 20 seconds. The default is 4 seconds. |
Use the alps local-hld remote-hld ALPS circuit submode command to specify the local and remote HLDs (in hexadecimal) to use for this ALPS circuit. Use the no form of this command to remove the definition from the configuration.
alps local-hld loc-hld remote-hld rem-hld
loc-hld | Local HLD to use for ALPS circuit. Hexadecimal number in the range 0x0101 to 0x7F7F. |
rem-hld | Remote HLD to use for ALPS circuit. Hexadecimal number in the range 0x0101 to 0x7F7F. |
Use the alps local-peer global configuration command to specify the IP address of the local peer. Use the no form of this command to remove all subsequent ALPS configuration commands from the router.
alps local-peer ip-address [promiscuous]
ip-address | IP address of the local peer. |
promiscuous | (Optional) Keyword specified at the central CPE to accept incoming TCP connections from any remote CPE. |
Use the alps max-msg-length ALPS ASCU submode command to specify maximum input message length. Use the no form of this command to return to the default maximum input message length.
alps max-msg-length value
value | Maximum input message length. The range is 1 to 3840. The default is 962 characters. |
Use the alps mpx ALPS circuit submode command to specify the multiplexing and the ASCU identification header for this circuit. Use the no form of this command to remove the definition from the configuration.
alps mpx {group | single} hdr {a1a2 | none}
group | Specifies that multiple ASCUs will be multiplexed on the ALPS circuit. |
single | Specifies that only one ASCU will use this circuit. |
hdr | Specifies the ASCU identification header for the circuit. |
a1a2 | ASCU identification via A1, A2. |
none | No ASCU identification. |
Use the alps n1 interface configuration command to specify the threshold of consecutive errors logged before an ASCU is declared down. Use the no form of this command to reassert the default number of consecutive errors before declaring an ASCU down.
alps n1 errors
errors | Error count limit. The valid range is 1 to 30 errors. The default is 30 errors. |
Use the alps n2 interface configuration command to specify the number of polls that must be correctly replied to before an ASCU is declared up. Use the no form of this command to reassert the default number of polls that must be correctly replied before an ASCU is declared up.
alps n2 polls
polls | Number of polls that must be correctly replied to. The valid range is 1 to 30 polls. The default is 30 polls. |
Use the alps poll-pause interface configuration command to specify the minimum interval, in milliseconds, between initiations of the polling cycle. Use the no form of this command to revert to the default interval.
alps poll-pause msec
msec | Minimum interval between polls, in microseconds.The valid range is 10 to 1000 microseconds. The default interval is 50 microseconds. |
Use the alps primary-peer ALPS circuit submode command to specify the primary TCP peer and, optionally, a backup TCP peer for this ALPS circuit. Use the no form of this command to remove the definition from the configuration.
alps primary-peer ip-addr [backup-peer ip-addr]
ip-addr | IP address specified in the alps remote-peer command. |
backup-peer | (Optional) Backup TCP peer for the ALPS circuit. |
ip-addr | (Optional) IP address specified in the alps remote-peer command. |
Use the alps remote-peer global configuration command to specify the IP address of a peer connection to the partner CPE. Use the no form of this command to remove the definition from the configuration.
alps remote-peer ip-addr [dynamic [inact-timer]] [tcp-qlen [num]]
ip-addr | IP address of the peer. |
dynamic | (Optional) Allows the TCP connection to the host peer to be opened only when there is data to be transferred to the host reservation system. |
inact-timer | (Optional) Length of inactivity, in seconds, after which the connection is closed. The range is 10 to 300 seconds. The default is 60 seconds. |
tcp-qlen | (Optional) Specifies a default number of packets in the queue. |
num | (Optional) Number of packets allowed in the queue. The range is 26 to 100 packets. The default is 50 packets. |
Use the alps retry-option ALPS ASCU submode command to configure the CPE to transmit a message to the ASCU when a message with a bad cycle check character (CCC) is received from an ASCU. Use the no form of this command to reassert the default action of no retry.
alps retry-option {resend | reenter}
resend | Specify the retry option as resend. This option causes an indicator LED to signal the operator at the ASCU to resend data. |
reenter | Specify the retry option as reenter. This option causes a service message to signal the operator at the ASCU to reenter data. |
Use the alps service-msg-interval ALPS circuit submode command to specify the interval between transmission of a service message to an ASCU and transmission of a "PLEASE RETRY" message. Use the no form of this command to remove the definition from the configuration.
alps service-msg-interval seconds
seconds | Interval, in seconds, between consecutive transmissions of service messages from the remote CPE to the ASCU. The range is 1 to 20 seconds. The default interval is 4 seconds. |
Use the alps service-msg-list ALPS circuit submode command to define the service message list to be used for this circuit. Use the no form of this command to remove the list from the circuit configuration, thus issuing no service messages until another list is configured.
alps service-msg-list list
list | The service message list to be used for this circuit. The valid numbers are 1 to 8. |
Use the alps service-msg-list number global configuration command to define the service message identity and its contents for a service message list. Use the no form of this command to remove a service message number from the service message list configuration.
alps service-msg-list list number number msg
list | The service message list to be used for this circuit. The valid numbers are 1 to 8 |
number | Specify a list number. |
number | List number. Valid numbers are 1 to 8. |
msg | Contents of a service message. |
Use the alps servlim interface configuration command to specify the number of cycles of the active poll list to execute before polling the next ASCU on the inactive poll list. Use the no form of this command to reassert the default number of cycles through the normal (active) poll list allowed before the slow poll list is processed.
alps servlim polls
polls | Number of polls of the ASCU UP list. The valid range is 1 to 30 polls. The default is 30 polls. |
Use the alps t1 interface configuration command to specify the timeout delay between polling and response. Use the no form of this command to reassert the default poll timeout value of 0.5 seconds.
alps t1 delay
delay | Timeout delay, in seconds, between polling and response. The valid range is 1 to 10 tenths of a second (.1 to 1 second). The default is 5 tenths of a second (0.5 second). |
Use the alps t2 interface configuration command to specify the timeout delay between receipt of the first character of an I/P sequence solicited by a poll and receipt of a Go Ahead (GA) sequence. Use the no form of this command to reassert the default timeout value of 6 seconds.
alps t2 delay
delay | Timeout delay, in seconds, between receipt of first character of an I/P sequence solicited by a poll and receipt of Go Ahead (GA) sequence. The valid range is 1 to 10 seconds. The default is 6 seconds. |
Use the alps translate interface configuration command to map an X.121 address to an IP address of a remote peer. Use the no form of this command to remove mapping from the configuration.
alps translate x.121-addr ip-addr
x.121-addr | X.121 address to be mapped to an IP address of a remote peer. |
ip-addr | IP address of the remote peer. |
Use the clear alps circuits EXEC command to remove configured ALPS circuits.
clear alps circuits [ipaddr address | name string]
ipaddr address | (Optional) Clear ALPS circuits for peer with specified IP address. |
name string | (Optional) Clear ALPS circuits for peer with specified name. |
Use the clear alps counters EXEC command to clear all counters relevant to the ALPS feature.
clear alps countersUse the encapsulation alc interface configuration command to specify that the ALC protocol will be used on the serial interface. Use the no form of this command to remove ALC protocol handling from the serial interface, and return the default encapsulation (HDLC) to the interface.
encapsulation alcUse the show alps ascu EXEC command to display the status of the ALPS ASCU.
show alps ascu [interface id] [detail]
interface id | (Optional) Combined interface and interchange address. If specified, only the status of that ASCU is displayed. |
detail | (Optional) Long display of output. |
Use the show alps circuits EXEC command to display the status of the ALPS circuits. If a circuit name is specified, than only the status of that circuit will be displayed; otherwise, the status of all circuits will be displayed.
show alps circuits [name name] [detail]
name name | (Optional) If specified, only the status of that circuit is displayed. |
detail | (Optional) Long display of output. |
Use the show alps peers EXEC command to display the status of the ALPS remote peers. If an IP address is specified, than only the status of that peer will be displayed; otherwise, the status of all peers will be displayed.
show alps peers [ipaddress addr] [detail]
ipaddress addr | (Optional) If specified, only the status of that circuit is displayed. |
detail | (Optional) Long display of output. |
Use the show interfaces EXEC command to display ALC information.
show interfaces type number
type | Interface type. |
number | Port number. |
Posted: Mon Feb 8 13:32:55 PST 1999
Copyright 1989-1999©Cisco Systems Inc.