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150 AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers
RouterOS v3 Configuration and User Guide
8 VPNs and Tunneling
8.1 EoIP
Document revisi on: 1.4 (Fri Nov 04 20: 53:13 GMT 2005)
Applies to: V2.9
8.1.1 General Information
Summary
Ethernet over IP (EoIP) Tunneling is a RouterOS protocol that creates an Ethernet tunnel between two
routers on top of an IP connection. The EoIP interface appears as an Ethernet interface. When the
bridging function of the router is enabled, all Ethernet traffic (all Ethernet protocols) will be bridged just
as if there where a physical Ethernet interface and cable between the two routers (with bridging enabled).
This protocol makes multiple network schemes possible.
Network setups with EoIP interfaces:
• Possibility to bridge LANs over the Internet
• Possibility to bridge LANs over encrypted tunnels
• Possibility to bridge LANs over 802.11b 'ad-hoc' wireless networks
Quick Setup Guide
To make an EoIP tunnel between 2 routers which have IP addresses 10.5.8.1 and 10.1.0.1:
On router with IP address 10.5.8.1, add an EoIP interface and set its MAC address:
/interface eoip add remote-address=10.1.0.1 tunnel-id=1 mac-address=00-00-5E-80-00-01 \
\... disabled=no
On router with IP address 10.1.0.1, add an EoIP interface and set its MAC address:
/interface eoip add remote-address=10.5.8.1 tunnel-id=1 mac-address=00-00-5E-80-00-02 \
\... disabled=no
Now you can add IP addresses to the created EoIP interfaces from the same subnet.
Specifications
Packages required: system
License required: Level1 (limited to 1 tunnel) , Level3
Submenu level: /interface eoip
Standards and Technologies: GRE (RFC1701)
Hardware usage: Not significant
Related Topics
IP Addresses and ARP
Bridge Interfaces
PPTP
Description
EoIP interface may be configured between two routers that have active IP level connection. The EoIP
tunnel may run over an IPIP tunnel, a PPTP 128bit encrypted tunnel, a PPPoE connection, or any other
connection that transports IP.
Specific Properties:
Each EoIP tunnel interface can connect with one remote router which has a corresponding interface
configured with the same 'Tunnel ID'.