RACOM M!DGE3, Руководство пользователя

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Tab. 7.1: Signal levels for individual services
4G: RSRP 3G: RSCP 2G: RSSI LED color Signal level
<= -100 dBm <= -100 dBm <= -95 dBm Red Weak / No signal
-100 to -80 dBm -100 to -89 dBm -95 to -84 dBm Orange Medium
-80 dBm <= -89 dBm <= -84 dBm <= Green Good
7.2. Routing
M!DGE3 router supports both static and dynamic IP routing.
Static routing is based on fixed – static – definition of routing tables. Dynamic routing is based on
automatic creating and updating of routing tables. Various methods and protocols are used for this
purpose. BABEL, OSPF and BGP standard routing protocols are available in M!DGE3 networks.
7.2.1. Static
M!DGE3 works as a standard IP router with multiple independent interfaces: Radio interface, Network
interfaces (bridging physical Ethernet interfaces), COM ports, Terminal servers, optional Cellular interface
etc. Each of the interfaces has its own IP addresses and Masks. All IP packets are processed according
to the Routing table.
Unlimited number of subnets can be defined on the Network interface. They are routed independently.
The COM ports are treated in the standard way as router devices, messages can be delivered to them
as UDP datagrams to selected UDP port numbers. Destination IP address of COM port is either IP of
a Network interface (bridging Ethernet interfaces) or IP of Radio interface. The IP address source of
outgoing packets from COM ports is equal to IP address of interface (either Radio or Network interface)
through which packet has been sent. The source address can also be assigned to
Local preferred
source address value - see description below. Outgoing interface is determined in Routing table ac-
cording to the destination IP.
The IP addressing scheme can be chosen arbitrarily, only 127.0.0.0/8 and 192.0.2.233/30 and
192.0.2.228/30 restriction applies. It may happen that also the subsequent addresses from the
192.0.2.0/24 subnet according to RFC5737 may be reserved for internal usage in the future.
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