8.2
Questions and answers
Table 15:
Questions and answers
Question
Answer
Do I need a public, static IP address for
ARM600?
When using standard “off the shelf” public cellular network SIM cards in the Arctic field
devices, they are routed over the Internet. ARM600 is a server equipment and it requires a
public, static IP address when public networks are used. The public IP address may be
associated to the company’s border router and VPN packets can be port forwarded to
ARM600. Thus, the public IP address does not need to be associated directly to ARM600’s
Ethernet interface.
Why is there no SIM card inside ARM600?
Depending on the model, ARM600 is designed to support 300…3000 Arctic Wireless
Gateways/Controllers. One cellular network connection on the ARM600 side is not able to
provide the required bandwidth for hundreds or thousands of Arctic field devices.
Can IEC 61850 GOOSE be transferred over
this system?
Yes, with Layer 2 OpenVPN tunnels. However, note that the contemporary cellular networks
are not capable of providing the required latency and speed for higher speed GOOSE
message classes.
Our company has a private APN in cellular
network. Do we need ARM600?
Arctic Gateways/Controllers can be used without ARM600, if a private APN is available.
However, ARM600 is still highly recommended because of the Patrol centralized
management functionality, secure VPN tunnels, firewall and for not needing complex D-NAT
configurations in the field devices.
Section 8
1MRS758861 A
Troubleshooting
50
ARM600
User Manual
