The Ethernet MAC layer source addresses that are active on the internal LAN are stored in a filtering database. Packets with a MAC destination that do not match a MAC address entry for the receiving port are encapsulated in an IP packet that is forwarded to the remote network.

MANAGEMENT
The IP·Tube E2 management is accomplished with a Command Line Interface that is accessed through a Console or Telnet connection. Templates of the most common configurations provide for an Edit and Paste configuration. SNMP MIB I and II support with interface status change traps.

The IP•Tube E2 is used to interconnect Ethernet LANs through an IP network. Ethernet frames that are destined for a device located on the remote network are encapsulated into IP packets. The IP packets, with the encapsulated Ethernet frames, are sent to the IP address of the destination network's IP·Tube E2 where the IP envelope is removed and the original Ethernet Frames are delivered to the destination network's Ethernet device.

Secure Communication
The IPTube·E2 provides a high level of security by only exchanging packets with the remote network. Additionally Ethernet Frames within the IP envelope must be addressed to specific Ethernet MAC addresses. Bridges secure applications that limit communication to IP addresses within the same subnet across an enterprise Intranet.

Network Security
Security is established with Full On Source, Destination Address; Port and Flag IP Packet filtering. Interconnectivity is selectively controlled at the interface, network, device and application layers.