客户需求:在MSR810-LM采用3G SIM卡通过VPDN拨号,接入电信4G运营商获取固定ip地址。
出现问题:在MSR810-LM采用3G SIM卡通过VPDN拨号后获取地址不固定,导致地址获取异常时无法接入网络。
客户案例:
在MSR810-LM采用3G SIM卡通过VPDN拨号后获取地址10.122.13.2后才能正常访问网络,但是发现每次设备重新拨号后获取地址不固定,获取到其它地址时无法访问网络
对比4G接口信息:发现地址获取正确情况下Current Data Bearer Technology(当前载波制式)为:CDMA2000 HRPD;地址获取不正确情况下Current Data Bearer Technology(当前载波制式)为:CDMA2000 EHRPD
原因:运营商服务器侧对拨号获取的地址有限制,只有选择正确的载波制式,获取正确ip地址才能访问网络。
[ls3G]dis cellular
Cellular1/0:
Modem State:
Hardware Information:
Model: U8300C
Manufacturer: LONGSUNG
Modem Firmware Version: QA30002.1.6_MV11(4534_1.2.3_L0801)
International Mobile Equipment Identity (IMEI): 869751026361756
International Mobile Subscriber Identity (IMSI): 460111125944828
Mobile Equipment Identifier (MEID): A100005B167B66
Hardware Version: 30000
Modem Status: Online
Modem Status: IPv4 Active.
Modem Status: IPv6 Unkown.
Profile Information:
Profile index: 1
PDP Type: IPv4v6
Header Compression: Off
Data Compression: Off
Access Point Name (APN): xzpost.vpdn.xz
Authentication: CHAP
Username: ls3g1@xzpost.vpdn.xz
* - Default profile
Network Information:
Current Service Status: Service Available
Registration Status: Registered
Current Service: Packet-switched
Current Roaming Status: Home
Current Data Bearer Technology: CDMA2000 EHRPD
Network Selection Mode: Automatic
Current IP address Mode: IPv4 Cellular-alloc
SID: 0x0
NID: 0x0
BID: 0x0
Radio Information:
Technology Preference: 1xEV-DO only
Technology Selected: 1xEV-DO
Configured LTE Band = 1,3,5,38,39,40,41
HDR (1xEVDO) related info:
Current RSSI: -41 dBm
Current ECIO: -4 dBm
Current IO: -37 dBm
Modem Security Information:
PIN Verification: Disabled
PIN Status: PIN Requirement Disabled
Number of PIN Retries Remaining: 3
Number of PUK Retries Remaining: 10
SIM Status: OK
ICCID: 89860317432039303197
Error Information:
IPv4 dialing failed: 0x00: No error in the request
IPv6 dialing failed: N/A
GPS Information:
GPS Info:
GPS State: Enabled
GPS Mode Configured: Standalone
Latitude: 0 Deg 0 Min 0 Sec North
Longitude: 0 Deg 0 Min 0 Sec East
Timestamp (UTC): 06/27/2018 04:12:04
Local time: 06/27/2018 04:12:04
Heading: 0.00, Velocity Horiz: 0.00, Velocity Vert: 0.00
Height (MSL): -18.00 m
Satellite Info:
解决方法:
关闭EHRPD方法
system
controller cellular
1/0
sendat ate0
sendat at+ehrpdenable=0
modem
reboot
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