Руководство пользователя
1. Configuring WAN-4G
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Qtech(config)# interface cellular 0/0
Enters the interface configuration mode.
Qtech(config-if- cellular 0/0)# plmn status bfd
Configures the 4G interface status to associate with
BFD.
Qtech(config-if-
cellular0/0)#backup-valid-check
valid-
timer 30 max-check-times 3
Configures the time and count of querying the availability
query timer (60 seconds and 3 times by default).
Association of a 4G interface with BFD can be configured on a Qtech 4G router to check the link service
status. When the status of the BFD object changes to down, 4G link reset can be triggered to initiate a
dial-up connection. After successful dialing, if the BFD status is not up and remains to be down, the
corresponding 4G interface is still unavailable in this situation. In this case, this timer needs to be started
to perform check. If it is within the time of set "seconds * max-times", the time is 60s * 3 = 180s (the
default configuration is used as an example), the corresponding Track status is still down, and the 4G link
is reset again to initiate a dial-up connection, thus ensuring link recovery.
Example: Configure a single 4G card to associate with BFD.
Qtech# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Qtech(config)# interface cellular 0/0
Qtech(config-if-cellular 0/0)# plmn status bfd
Qtech(config-if-cellular 0/0)# backup-valid-check valid-timer 30 max-check-times 3
Qtech(config-if-cellular 0/0)# show run interface cellular 0/0
Building configuration...
Current configuration : 141 bytes
!
interface cellular 0/0
backup-valid-check valid-timer 30 max-check-times 3
plmn status bfd
1.2.1.5
Configuring a Single 4G Interface and RSSI Status Detection
Command
Description
Qtech# configure terminal
Enters the global configuration mode.
Qtech(config)# interface cellular 0/0
Enters the interface configuration mode.
Qtech(config-if- cellular 0/0)# plmn status rssi-detect -100
interval 16 ntimes 4 percent 50
Configures RSSI detection on a 4G interface.
RSSI status detection can be configured on a Qtech 4G router to check the link service status for ntimes
within the interval. If the current signal intensity is lower than the configured signal intensity value for
ntimes
*
percent, the link is disconnected. Counter check is continued. If the checked signal intensity is
greater than the configured signal intensity for ntimes
*
percent within the interval, the 4G link will be reset
again to initiate a dial-up connection, thus ensuring link recovery.
Example: Configure a single 4G card to implement signal intensity detection.
Qtech# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Qtech(config)# interface cellular 0/0
Qtech(config-if-cellular 0/0)# plmn status rssi-detect -100 interval 16 ntimes 4 percent 50
Qtech(config-if-cellular 0/0)# show run interface cellular 0/0
Building configuration...
Current configuration : 141 bytes
!
interface cellular 0/0
plmn status rssi-detect -100 interval 16 ntimes 4 percent 50
1.2.2
Single Card and Multiple Access Dialing Function
This access mode is applicable to the following scenarios: A single card configured with multiple APNs, user names
and passwords. Different APNs access the corresponding dedicated line LNS servers. When the LNS server of a
dedicated line fails, a normal LNS server can be accessed through another APN.
Содержание QSR-2830
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