RACOM M!DGE3, Руководство пользователя

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GRE L3 Enable
Switches all L3 tunnels On or Off.
Individual L3 tunnels:
Enable
Enables actual L3 tunnel. Maximum number of configurable tunnels is 256.
Note
Informational note
Peer address
IP address of the equipment with the second end of the tunnel. This address is the expected source
address of incoming GRE packets from the peer.
Tunnel address / Mask
IP address and mask of the GRE tunnel interface
Key enabled
Enables using key identification of the tunnel from/to the same peer
Key
Identification number of the tunnel Number {0 – 4,294,967,295}, default = 0
MTU
MTU of the L2 tunnel. Number {70 – 1476}, default = 1476
Overhead of the L3 tunnel is 24 B , so it should be GRE MTU = Path MTU - 24. If the MTU is
bigger than is allowed along the route, the GRE packets will be discarded and ICMP report will be
send back to the source of the original packet (Path MTU discovery).
7.5. Security
User authentication is required to access M!DGE3 unit management. There are two types of user au-
thentication which differ in the user account location:
Local authentication – user accounts are stored directly in the M!DGE3 unit
Remote authentication – user accounts are stored on a remote authentication server (RADIUS is
implemented)
119 © RACOM s.r.o. – M!DGE3 Cellular Router
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