GNSS NMEA data IP transport service
IP transport services are used to send GNSS National Marine Electronics Association (NMEA) data to remote hosts. All IP transport functionality supported for serial data over raw sockets is also available for NMEA data. See Raw socket IP transport service for information.
An IP transport subservice within a Layer 3 VPRN service can be configured to transmit GNSS NMEA data from the GNSS receiver (as the IP transport local host) to one or more remote hosts. See GNSS NMEA data over IP transport service. Any packets sent from remote hosts toward the local host of the IP transport subservice are dropped.
![](graphics/ti035925.png)
Use the syntax shown below to create an IP transport subservice within a VPRN service.
- CLI Syntax:
config>service
vprn service-id [customer customer-id] [create]
ip-transport ipt-id [create]
description description-string
filter-unknown-host
local-host ip-addr ip-addr port-num port-num protocol {tcp | udp}
remote-host host-id [ip-addr ip-addr] [port-num port-num] [create]
description description-string
name host-name
exit
shutdown
tcp
inactivity-timeout seconds
max-retries number
retry-interval seconds
exit
exit
exit
exit
To enable the transport of NMEA data from the local host, configure the ipt-id as gnss. The following example is an IP transport subservice configuration output for the transport of NMEA data.
A:NOK-B>config>service>vprn# info
----------------------------------------------
ip-transport gnss create
description "ip-transport to send NMEA data to multiple hosts"
filter-unknown-host
local-host ip-addr 192.0.2.1 port-num 2000 protocol tcp
remote-host 1 create ip-addr 128.5.5.1 port-num 32000
exit
remote-host 2 create ip-addr 128.4.4.2 port-num 32000
exit
no shutdown
exit
no shutdown
----------------------------------------------
A:NOK-B>config>service>vprn#
For information about configuring NMEA parameters on the GNSS receiver, see GNSS Configuration in the 7705 SAR-Hm and SAR-Hmc Interface Configuration Guide.