Check Connection

This scenario shows how to configure a cellular interface and then check for network connectivity by pinging Google’s DNS public server. In addition, some operational commands are executed and the information displayed by them is checked.

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Test ICMP Connectivity

Description

In DUT0, the cellular module wwan0 is configured with the PIN code required by the inserted SIM card. Additionally, a Packet Data Protocol (PDP) is configured with the APN corresponding to the SIM card’s operator. Then, the cellular interface cell0 is associated with this PDP and configured to obtain its IP addressing through DHCP. Once it’s configured, the ‘Ping’ command is used to check connectivity with Google’s DNS public server.

Scenario

Step 1: Set the following configuration in DUT0 :

set cellular profile CELPROFILE apn movistar.es
set controllers cellular wwan0 encrypted-pin U2FsdGVkX19n+AZhaJDzLWw85xB5VurXoTg36EPRSp4=
set controllers cellular wwan0 pdp 1 profile CELPROFILE
set interfaces cellular cell0 address dhcp
set interfaces cellular cell0 phy wwan0 pdp 1
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Note

Once the cellular module is configured, checking whether the SIM and registration states are correct can be done with the following operational command.

Step 2: Run command controllers cellular wwan0 show network-status at DUT0 and check if output matches the following regular expressions:

SIM status\s* = OK
Registration state\s* = registered
Show output
SIM status = OK
Registration state = registered
Public Land Mobile Network code = HOME[21407] ACT[21422]
Public Land Mobile Network name = Movistar
Network technology currently in use = lte
Current Service Domain registered = cs-ps (capable cs-ps)
Current Roaming status = off
3GPP Cell ID = 72596001
Radio Band = eutran-20
Channel = 3600
LTE Tracking Area Code (TAC) = 28673
LTE Carrier Aggregation Info:
   Primary Cell Info:
      Band = E-UTRA Band 8
      Frequency = 3600
      Downlink Bandwidth = 10 MHz
      Physical Cell ID = 35
      Scell State = registered
      RSRP (dBm) = -95
      RSRQ (dB) = -9
      RSSI (dBm) = -70
      SINR (dB) = 8
      Uplink Bandwidth = 10 MHz
   Secondary Cell Info #0:
      Band = E-UTRA Band 3
      Frequency = 1301
      Downlink Bandwidth = 20 MHz
      Physical Cell ID = 216
      Scell State = inactive
      RSRP (dBm) = -85
      RSRQ (dB) = -8
      RSSI (dBm) = -68
      SINR (dB) = 11
RX level (dBm) = -76
Coverage level = 4 (**** )

Note

On the other hand, checking whether the cellular interface has correctly established the network connection can be done with the following command.

Step 3: Run command controllers cellular wwan0 pdp 1 show network-data-connection at DUT0 and check if output matches the following regular expressions:

Connection status\s* = connected
Show output
Connection status               = connected
Traffic channel status          = active
Max. TX channel rate (bps)      = 50000000
Max. RX channel rate (bps)      = 300000000
IPv4 address                    = 88.31.46.252
IPv4 mask                       = 255.255.255.248
IPv4 gateway                    = 88.31.46.253
IPv4 primary DNS                = 80.58.61.248
IPv4 secondary DNS              = 80.58.61.249

Note

Additionally, with the previous operational command, the IP address provided by the operator to be used by the cellular interface is displayed. With the following command, it is possible to check if the DHCP client has correctly configured the cellular interface.

Step 4: Run command interfaces cellular cell0 show at DUT0 and check if output matches the following regular expressions:

cell0\s+\d+.\d+.\d+.\d+\/\d+\s+up\s+up
Show output
------------------------------------------------------------------
Name            IP Address           Admin  Oper  Vrf  Description
------------------------------------------------------------------
cell0  88.31.46.252/29               up     up
       fe80::44f5:20ff:feab:1421/64

Note

Once all of the above has been verified, we can be sure that the cellular interface has been correctly configured and there is network connectivity. The latter can be verified, for example, by pinging Google's DNS public server.

Step 5: Ping IP address 8.8.8.8 from DUT0:

admin@DUT0$ ping 8.8.8.8 count 1 size 56 timeout 1
Show output
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=117 time=144 ms

--- 8.8.8.8 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 144.372/144.372/144.372/0.000 ms

Note

More details of the cellular interface can be obtained through the following operational commands.

Step 6: Run command controllers cellular wwan0 show cell-info at DUT0 and check if output matches the following regular expressions:

GSM\/EDGE info|UMTS info|LTE intrafrequency info|LTE interfrequency info|LTE info - Neighboring GSM|LTE info - Neighboring WCDMA|UMTS Cell ID|UMTS info - Neighboring LTE
Show output
LTE intrafrequency info:
   UE in idle mode                   = no
   PLMN ID coded                     = 21407
   Tracking Area Code                = 28673
   Global cell ID                    = 72596001
   E-UTRA absolute RF channel number = 3600
   LTE serving cell ID               = 35
   Cell #0
      Physical cell ID        = 35
      Current RSRQ (dB)       = -9.300000
      Current RSRP (dBm)      = -95.900000
      Current RSSI (dBm)      = -70.300000
      Cell selection Rx Level = 0
   Cell #1
      Physical cell ID        = 210
      Current RSRQ (dB)       = -11.300000
      Current RSRP (dBm)      = -97.200000
      Current RSSI (dBm)      = -75.600000
      Cell selection Rx Level = 0
   Cell #2
      Physical cell ID        = 271
      Current RSRQ (dB)       = -19.600000
      Current RSRP (dBm)      = -107.800000
      Current RSSI (dBm)      = -78.800000
      Cell selection Rx Level = 0
LTE interfrequency info:
   UE in idle mode = no
   Frequency #0
      E-UTRA absolute RF channel number      = 1301
      Cell selection Rx Level low threshold  = 0
      Cell selection Rx Level high threshold = 0
      Cell reselection priority              = 0
      Cell #0
         Physical cell ID        = 3
         Current RSRQ (dB)       = -17.400000
         Current RSRP (dBm)      = -95.700000
         Current RSSI (dBm)      = -63.700000
         Cell selection Rx Level = 0
      Cell #1
         Physical cell ID        = 216
         Current RSRQ (dB)       = -12.500000
         Current RSRP (dBm)      = -84.700000
         Current RSSI (dBm)      = -63.700000
         Cell selection Rx Level = 0
LTE info - Neighboring GSM:
   UE in idle mode = no
LTE info - Neighboring WCDMA:
   UE in idle mode = no

Step 7: Run command controllers cellular wwan0 show device-info at DUT0 and check if output matches the following regular expressions:

Module Manufacturer\s* = .*\nModule Model\s* = .*
Show output
Module Manufacturer          = Quectel
Module Model                 = EM06E
Module Firmware              = EM06ELAR04A20M4G
Hardware Revision            = 20000
Modem/App Firmware           = EM06ELAR04A20M4G
IMEI                         = 866680043220203
IMSI                         = 214075519082725
ICCID                        = 8934076700110220627F
Radio Interfaces             = umts, lte
Data Service Capability      = non-simultaneous-cs-ps
Maximum TX/RX rate supported = 50000/100000 Kbps

Step 8: Run command controllers cellular wwan0 show temperature at DUT0 and check if output matches the following regular expressions:

Temperature\s* = \d+
Show output
Temperature = 37

Step 9: Run command controllers cellular wwan0 show preferred-bands at DUT0 and check if output matches the following regular expressions:

Bands preference\s* = .*\nLTE bands preference\s* = .*
Show output
Bands preference           = wcdma-2100, wcdma-dcs-1800, wcdma-850-us, wcdma-900
LTE bands preference       = 1, 3, 5, 7, 8, 20, 28, 32, 38, 40, 41

Step 10: Run command controllers cellular wwan0 show signal-quality at DUT0 and check if output matches the following regular expressions:

(CDMA|EVDO|GSM\/GPRS|WCDMA|LTE):\n\s+RSSI \(dBm\)\s* = -?\d+
Show output
LTE:
   RSSI (dBm) = -67
   RSRP (dBm) = -99
   RSRQ (dB)  = -10
   SNR (dB)   = 12.000000

Step 11: Run command controllers cellular wwan0 show supported-bands at DUT0 and check if output matches the following regular expressions:

Bands\s* = .*\nLTE bands\s* = .*
Show output
Bands           = wcdma-2100, wcdma-dcs-1800, wcdma-850-us, wcdma-900
LTE bands       = 1, 3, 5, 7, 8, 20, 28, 32, 38, 40, 41

Note

Finally, some information can be obtained from the cellular interface via SNMP requests. The following information is provided: the quality of the reception signal, the cell location area code (LAC), the radio access technology used, the tracking area code (TAC), the cell identifier used, and the active radio band.

Step 12: Modify the following configuration lines in DUT0 :

set service snmp community 'COMMUNITY2TEST!'

Step 13: Run command service snmp walk local-agent v2c COMMUNITY2TEST! oid TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatus at DUT0 and check if output matches the following regular expressions:

TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusSignalQuality\."wwan0" = INTEGER: -?\d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellLocationAreaCode\."wwan0" = INTEGER: \d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioTechnology\."wwan0" = STRING: .+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusTrackingAreaCode\."wwan0" = STRING: \d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellId\."wwan0" = INTEGER: \d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioBand\."wwan0" = STRING: .+
Show output
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusTag."wwan0" = STRING: wwan0
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusSignalQuality."wwan0" = INTEGER: -67
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellLocationAreaCode."wwan0" = INTEGER: 28673
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioTechnology."wwan0" = STRING: E-UTRAN LTE
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusTrackingAreaCode."wwan0" = STRING: 28673
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellId."wwan0" = INTEGER: 72596001
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioBand."wwan0" = STRING: eutran-8

Step 1: Set the following configuration in DUT0 :

set cellular profile CELPROFILE apn movistar.es
set controllers cellular wwan0 sim select socket_1
set controllers cellular wwan0 sim socket socket_1 encrypted-pin U2FsdGVkX1/32E3qwbUul2rqFfDdQrTahi2WE8h/SNI=
set controllers cellular wwan0 sim socket socket_1 pdp 1 profile CELPROFILE
set interfaces cellular cell0 address dhcp
set interfaces cellular cell0 phy wwan0 pdp 1
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Note

Once the cellular module is configured, checking whether the SIM and registration states are correct can be done with the following operational command.

Step 2: Run command controllers cellular wwan0 show network-status at DUT0 and check if output matches the following regular expressions:

SIM status\s* = OK
Registration state\s* = registered
Show output
SIM status = OK
Registration state = registered
Public Land Mobile Network code = HOME[21407] ACT[21422]
Public Land Mobile Network name = Movistar
Network technology currently in use = lte(+5gnr)
Current Service Domain registered = cs-ps (capable cs-ps)
Current Roaming status = off
3GPP Cell ID = 72016414
Radio Band = eutran-3
Bandwidth = 20
Channel = 1301
LTE Tracking Area Code (TAC) = 28673
EN-DC Available = yes
DCNR Restriction = no
LTE Carrier Aggregation Info:
   Primary Cell Info:
      Band = E-UTRA Band 3
      Frequency = 1301
      Downlink Bandwidth = 20 MHz
      Physical Cell ID = 216
      Scell State = registered
      RSRP (dBm) = -82
      RSRQ (dB) = -9
      RSSI (dBm) = -53
      SINR (dB) = 12
      Uplink Bandwidth = 20 MHz
   Secondary Cell Info #0:
      Band = E-UTRA Band 20
      Frequency = 6400
      Downlink Bandwidth = 10 MHz
      Physical Cell ID = 195
      Scell State = inactive
      RSRP (dBm) = -73
      RSRQ (dB) = -9
      RSSI (dBm) = -54
      SINR (dB) = 13
      Uplink Frequency = 24400
      Uplink Bandwidth = 10 MHz
RX level (dBm) = -53 or greater
Coverage level = 5 (*****)

Note

On the other hand, checking whether the cellular interface has correctly established the network connection can be done with the following command.

Step 3: Run command controllers cellular wwan0 pdp 1 show network-data-connection at DUT0 and check if output matches the following regular expressions:

Connection status\s* = connected
Show output
Connection status               = connected
Traffic channel status          = active
Max. TX channel rate (bps)      = 0
Max. RX channel rate (bps)      = 0
IPv4 address                    = 88.31.101.166
IPv4 mask                       = 255.255.255.252
IPv4 gateway                    = 88.31.101.165
IPv4 primary DNS                = 80.58.61.248
IPv4 secondary DNS              = 80.58.61.249

Note

Additionally, with the previous operational command, the IP address provided by the operator to be used by the cellular interface is displayed. With the following command, it is possible to check if the DHCP client has correctly configured the cellular interface.

Step 4: Run command interfaces cellular cell0 show at DUT0 and check if output matches the following regular expressions:

cell0\s+\d+.\d+.\d+.\d+\/\d+\s+up\s+up
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
cell0  88.31.101.166/30             up     up
       fe80::ec2c:7dff:fe7a:a2d/64

Note

Once all of the above has been verified, we can be sure that the cellular interface has been correctly configured and there is network connectivity. The latter can be verified, for example, by pinging Google's DNS public server.

Step 5: Ping IP address 8.8.8.8 from DUT0:

admin@DUT0$ ping 8.8.8.8 count 1 size 56 timeout 1
Show output
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=118 time=168 ms

--- 8.8.8.8 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 167.580/167.580/167.580/0.000 ms

Note

More details of the cellular interface can be obtained through the following operational commands.

Step 6: Run command controllers cellular wwan0 show cell-info at DUT0 and check if output matches the following regular expressions:

GSM\/EDGE info|UMTS info|LTE intrafrequency info|LTE interfrequency info|LTE info - Neighboring GSM|LTE info - Neighboring WCDMA|UMTS Cell ID|UMTS info - Neighboring LTE
Show output
LTE intrafrequency info:
   UE in idle mode                   = no
   PLMN ID coded                     = 21407
   Tracking Area Code                = 28673
   Global cell ID                    = 72016414
   E-UTRA absolute RF channel number = 1301
   LTE serving cell ID               = 216
   Cell #0
      Physical cell ID        = 216
      Current RSRQ (dB)       = -10.000000
      Current RSRP (dBm)      = -82.400000
      Current RSSI (dBm)      = -54.600000
      Cell selection Rx Level = 0
LTE interfrequency info:
   UE in idle mode = no
   Frequency #0
      E-UTRA absolute RF channel number      = 6400
      Cell selection Rx Level low threshold  = 0
      Cell selection Rx Level high threshold = 0
      Cell reselection priority              = 0
      Cell #0
         Physical cell ID        = 195
         Current RSRQ (dB)       = -9.100000
         Current RSRP (dBm)      = -72.900000
         Current RSSI (dBm)      = -55.000000
         Cell selection Rx Level = 0
LTE info - Neighboring GSM:
   UE in idle mode = no
LTE info - Neighboring WCDMA:
   UE in idle mode = no

Step 7: Run command controllers cellular wwan0 show device-info at DUT0 and check if output matches the following regular expressions:

Module Manufacturer\s* = .*\nModule Model\s* = .*
Show output
Module Manufacturer          = Quectel
Module Model                 = RM520N-GL
Module Firmware              = RM520NGLAAR03A01M4G
Hardware Revision            = 20000
Modem/App Firmware           = RM520NGLAAR03A01M4G_01.202.01.202
IMEI                         = 868371053265449
IMSI                         = 214071001209119
ICCID                        = 8934071700076645499F
Radio Interfaces             = umts, lte, 5gnr
Data Service Capability      = non-simultaneous-cs-ps
Maximum TX/RX rate supported = 250000/3300000 Kbps

Step 8: Run command controllers cellular wwan0 show temperature at DUT0 and check if output matches the following regular expressions:

Temperature\s* = \d+
Show output
Temperature = 33

Step 9: Run command controllers cellular wwan0 show preferred-bands at DUT0 and check if output matches the following regular expressions:

Bands preference\s* = .*\nLTE bands preference\s* = .*
Show output
Bands preference           = wcdma-2100, wcdma-pcs-1900, wcdma-1700-us, wcdma-850-us, wcdma-800, wcdma-900, wcdma-850-japan
LTE bands preference       = 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 43, 46, 48, 66, 71
5G-NR SA bands preference  = 1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 70, 71, 75, 76, 77, 78, 79
5G-NR NSA bands preference = 1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 70, 71, 75, 76, 77, 78, 79

Step 10: Run command controllers cellular wwan0 show signal-quality at DUT0 and check if output matches the following regular expressions:

(CDMA|EVDO|GSM\/GPRS|WCDMA|LTE):\n\s+RSSI \(dBm\)\s* = -?\d+
Show output
LTE:
   RSSI (dBm) = -50
   RSRP (dBm) = -84
   RSRQ (dB)  = -8
   SNR (dB)   = 13.600000

Step 11: Run command controllers cellular wwan0 show supported-bands at DUT0 and check if output matches the following regular expressions:

Bands\s* = .*\nLTE bands\s* = .*
Show output
Bands           = wcdma-2100, wcdma-pcs-1900, wcdma-1700-us, wcdma-850-us, wcdma-800, wcdma-900, wcdma-850-japan
LTE bands       = 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 43, 46, 48, 66, 71
5G-NR SA bands  = 1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 70, 71, 75, 76, 77, 78, 79
5G-NR NSA bands = 1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 70, 71, 75, 76, 77, 78, 79

Note

Finally, some information can be obtained from the cellular interface via SNMP requests. The following information is provided: the quality of the reception signal, the cell location area code (LAC), the radio access technology used, the tracking area code (TAC), the cell identifier used, and the active radio band.

Step 12: Modify the following configuration lines in DUT0 :

set service snmp community 'COMMUNITY2TEST!'

Step 13: Run command service snmp walk local-agent v2c COMMUNITY2TEST! oid TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatus at DUT0 and check if output matches the following regular expressions:

TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusSignalQuality\."wwan0" = INTEGER: -?\d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellLocationAreaCode\."wwan0" = INTEGER: \d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioTechnology\."wwan0" = STRING: .+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusTrackingAreaCode\."wwan0" = STRING: \d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellId\."wwan0" = INTEGER: \d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioBand\."wwan0" = STRING: .+
Show output
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusTag."wwan0" = STRING: wwan0
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusSignalQuality."wwan0" = INTEGER: -50
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellLocationAreaCode."wwan0" = INTEGER: 28673
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioTechnology."wwan0" = STRING: LTE+5GNR
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusTrackingAreaCode."wwan0" = STRING: 28673
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellId."wwan0" = INTEGER: 72016414
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioBand."wwan0" = STRING: eutran-3

Step 1: Set the following configuration in DUT0 :

set cellular profile CELPROFILE apn movistar.es
set controllers cellular wwan0 sim select socket_1
set controllers cellular wwan0 sim socket socket_1 encrypted-pin U2FsdGVkX199zkn/X1XjKe1so9grVyuITWPQ7/uM3Y4=
set controllers cellular wwan0 sim socket socket_1 pdp 1 profile CELPROFILE
set interfaces cellular cell0 address dhcp
set interfaces cellular cell0 phy wwan0 pdp 1
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Note

Once the cellular module is configured, checking whether the SIM and registration states are correct can be done with the following operational command.

Step 2: Run command controllers cellular wwan0 show network-status at DUT0 and check if output matches the following regular expressions:

SIM status\s* = OK
Registration state\s* = registered
Show output
SIM status = OK
Registration state = registered
Public Land Mobile Network code = HOME[21407] ACT[21422]
Public Land Mobile Network name = Movistar
Network technology currently in use = lte(+5gnr)
Current Service Domain registered = cs-ps (capable cs-ps)
Current Roaming status = off
3GPP Cell ID = 72596001
Radio Band = eutran-8
Bandwidth = 10
Channel = 3600
LTE Tracking Area Code (TAC) = 28673
EN-DC Available = yes
DCNR Restriction = no
LTE Carrier Aggregation Info:
   Primary Cell Info:
      Band = E-UTRA Band 8
      Frequency = 3600
      Downlink Bandwidth = 10 MHz
      Physical Cell ID = 35
      Scell State = registered
      RSRP (dBm) = -83
      RSRQ (dB) = -9
      RSSI (dBm) = -56
      SINR (dB) = 10
      Uplink Bandwidth = 10 MHz
   Secondary Cell Info #0:
      Band = E-UTRA Band 3
      Frequency = 1301
      Downlink Bandwidth = 20 MHz
      Physical Cell ID = 216
      Scell State = inactive
      RSRP (dBm) = -89
      RSRQ (dB) = -11
      RSSI (dBm) = -65
      SINR (dB) = 12
RX level (dBm) = -55
Coverage level = 5 (*****)

Note

On the other hand, checking whether the cellular interface has correctly established the network connection can be done with the following command.

Step 3: Run command controllers cellular wwan0 pdp 1 show network-data-connection at DUT0 and check if output matches the following regular expressions:

Connection status\s* = connected
Show output
Connection status               = connected
Traffic channel status          = active
Max. TX channel rate (bps)      = 0
Max. RX channel rate (bps)      = 0
IPv4 address                    = 81.47.69.9
IPv4 mask                       = 255.255.255.252
IPv4 gateway                    = 81.47.69.10
IPv4 primary DNS                = 80.58.61.248
IPv4 secondary DNS              = 80.58.61.249

Note

Additionally, with the previous operational command, the IP address provided by the operator to be used by the cellular interface is displayed. With the following command, it is possible to check if the DHCP client has correctly configured the cellular interface.

Step 4: Run command interfaces cellular cell0 show at DUT0 and check if output matches the following regular expressions:

cell0\s+\d+.\d+.\d+.\d+\/\d+\s+up\s+up
Show output
------------------------------------------------------------------
Name            IP Address           Admin  Oper  Vrf  Description
------------------------------------------------------------------
cell0  81.47.69.9/30                 up     up
       fe80::ec1f:eaff:feda:8ac6/64

Note

Once all of the above has been verified, we can be sure that the cellular interface has been correctly configured and there is network connectivity. The latter can be verified, for example, by pinging Google's DNS public server.

Step 5: Ping IP address 8.8.8.8 from DUT0:

admin@DUT0$ ping 8.8.8.8 count 1 size 56 timeout 1
Show output
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=117 time=187 ms

--- 8.8.8.8 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 186.564/186.564/186.564/0.000 ms

Note

More details of the cellular interface can be obtained through the following operational commands.

Step 6: Run command controllers cellular wwan0 show cell-info at DUT0 and check if output matches the following regular expressions:

GSM\/EDGE info|UMTS info|LTE intrafrequency info|LTE interfrequency info|LTE info - Neighboring GSM|LTE info - Neighboring WCDMA|UMTS Cell ID|UMTS info - Neighboring LTE
Show output
LTE intrafrequency info:
   UE in idle mode                   = no
   PLMN ID coded                     = 21407
   Tracking Area Code                = 28673
   Global cell ID                    = 72596001
   E-UTRA absolute RF channel number = 3600
   LTE serving cell ID               = 35
   Cell #0
      Physical cell ID        = 35
      Current RSRQ (dB)       = -11.900000
      Current RSRP (dBm)      = -83.500000
      Current RSSI (dBm)      = -57.500000
      Cell selection Rx Level = 0
   Cell #1
      Physical cell ID        = 210
      Current RSRQ (dB)       = -13.800000
      Current RSRP (dBm)      = -84.600000
      Current RSSI (dBm)      = -60.500000
      Cell selection Rx Level = 0
   Cell #2
      Physical cell ID        = 206
      Current RSRQ (dB)       = -16.900000
      Current RSRP (dBm)      = -89.000000
      Current RSSI (dBm)      = -61.000000
      Cell selection Rx Level = 0
LTE interfrequency info:
   UE in idle mode = no
   Frequency #0
      E-UTRA absolute RF channel number      = 1301
      Cell selection Rx Level low threshold  = 0
      Cell selection Rx Level high threshold = 0
      Cell reselection priority              = 0
      Cell #0
         Physical cell ID        = 216
         Current RSRQ (dB)       = -13.800000
         Current RSRP (dBm)      = -89.000000
         Current RSSI (dBm)      = -65.800000
         Cell selection Rx Level = 0
LTE info - Neighboring GSM:
   UE in idle mode = no
LTE info - Neighboring WCDMA:
   UE in idle mode = no

Step 7: Run command controllers cellular wwan0 show device-info at DUT0 and check if output matches the following regular expressions:

Module Manufacturer\s* = .*\nModule Model\s* = .*
Show output
Module Manufacturer          = Quectel
Module Model                 = RM520N-GL
Module Firmware              = RM520NGLAAR03A01M4G
Hardware Revision            = 20000
Modem/App Firmware           = RM520NGLAAR03A01M4G_A0.300.A0.300
IMEI                         = 868371055763052
IMSI                         = 214071330144340
ICCID                        = 8934076700149871366F
Radio Interfaces             = umts, lte, 5gnr
Data Service Capability      = non-simultaneous-cs-ps
Maximum TX/RX rate supported = 250000/3300000 Kbps

Step 8: Run command controllers cellular wwan0 show temperature at DUT0 and check if output matches the following regular expressions:

Temperature\s* = \d+
Show output
Temperature = 33

Step 9: Run command controllers cellular wwan0 show preferred-bands at DUT0 and check if output matches the following regular expressions:

Bands preference\s* = .*\nLTE bands preference\s* = .*
Show output
Bands preference           = wcdma-2100, wcdma-pcs-1900, wcdma-1700-us, wcdma-850-us, wcdma-900, wcdma-850-japan
LTE bands preference       = 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 43, 46, 48, 66, 71
5G-NR SA bands preference  = 1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 70, 71, 75, 76, 77, 78, 79
5G-NR NSA bands preference = 1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 70, 71, 75, 76, 77, 78, 79

Step 10: Run command controllers cellular wwan0 show signal-quality at DUT0 and check if output matches the following regular expressions:

(CDMA|EVDO|GSM\/GPRS|WCDMA|LTE):\n\s+RSSI \(dBm\)\s* = -?\d+
Show output
LTE:
   RSSI (dBm) = -55
   RSRP (dBm) = -83
   RSRQ (dB)  = -12
   SNR (dB)   = 5.800000

Step 11: Run command controllers cellular wwan0 show supported-bands at DUT0 and check if output matches the following regular expressions:

Bands\s* = .*\nLTE bands\s* = .*
Show output
Bands           = wcdma-2100, wcdma-pcs-1900, wcdma-1700-us, wcdma-850-us, wcdma-800, wcdma-900, wcdma-850-japan
LTE bands       = 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 43, 46, 48, 66, 71
5G-NR SA bands  = 1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 70, 71, 75, 76, 77, 78, 79
5G-NR NSA bands = 1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 29, 30, 38, 40, 41, 48, 66, 70, 71, 75, 76, 77, 78, 79

Note

Finally, some information can be obtained from the cellular interface via SNMP requests. The following information is provided: the quality of the reception signal, the cell location area code (LAC), the radio access technology used, the tracking area code (TAC), the cell identifier used, and the active radio band.

Step 12: Modify the following configuration lines in DUT0 :

set service snmp community 'COMMUNITY2TEST!'

Step 13: Run command service snmp walk local-agent v2c COMMUNITY2TEST! oid TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatus at DUT0 and check if output matches the following regular expressions:

TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusSignalQuality\."wwan0" = INTEGER: -?\d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellLocationAreaCode\."wwan0" = INTEGER: \d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioTechnology\."wwan0" = STRING: .+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusTrackingAreaCode\."wwan0" = STRING: \d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellId\."wwan0" = INTEGER: \d+
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioBand\."wwan0" = STRING: .+
Show output
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusTag."wwan0" = STRING: wwan0
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusSignalQuality."wwan0" = INTEGER: -55
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellLocationAreaCode."wwan0" = INTEGER: 28673
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioTechnology."wwan0" = STRING: LTE+5GNR
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusTrackingAreaCode."wwan0" = STRING: 28673
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusCellId."wwan0" = INTEGER: 72596001
TELDAT-OSDX-MONDB-SYSTEM-MIB::telOSDxMonDBSystemCellularStatusRadioBand."wwan0" = STRING: eutran-8