Managing Goose Tunnels - Siemens RX1500 User Manual

Chapter 5
Setup and Configuration
Section 5.29.5

Managing GOOSE Tunnels

The GOOSE tunnel feature provides the capability to bridge GOOSE frames over a Wide Area Network (WAN).
GOOSE tunnels provide the following features:
• GOOSE traffic is bridged over the WAN via UDP/IP.
• One GOOSE traffic source can be mapped to multiple remote router Ethernet interfaces in mesh fashion.
• To reduce bandwidth consumption, GOOSE daemons may be located at each of the legs and at the center of a
star network. The centrally located daemon will accept GOOSE packets and re-distribute them.
• Statistics report availability of remote GOOSE daemons, packet counts and Round Trip Time (RTT) for each
remote daemon.
• When the Virtual Router Redundancy Protocol (VRRP) is employed, GOOSE transport is improved by sending
redundant GOOSE packets from each VRRP gateway.
• You can enable GOOSE forwarding by configuring a generic Layer 2 tunnel. When configured, the device
listens for GOOSE packets on one VLAN and forwards them to another VLAN.
The GOOSE protocol is supported by the Layer 2 Tunnel Daemon. The daemon listens to configured Ethernet
interfaces and to the network itself (i.e. for tunnel connections from other daemon instances) on a configurable
UDP port.
The Media Access Control (MAC) destination address of frames received from Ethernet is inspected in order to
determine which GOOSE group they are in. The frames are then encapsulated in network headers and forwarded
(with MAC source and destination addresses intact) to the network as GOOSE packets.
IEC61850 recommends that the MAC destination address should be in the range 01:0c:cd:01:00:00 to
01:0c:cd:01:01:ff.
GOOSE packets received from the network are stripped of their network headers and forwarded to Ethernet
ports configured for the same multicast address. The forwarded frames contain the MAC source address or the
originating device, and not that of the transmitting interface. The VLAN used will be that programmed locally for
the interface and may differ from the original VLAN. The frame will be transmitted with the highest 802.1p priority
level (p4).
Packets received from the network will also be forwarded to any other remote daemons included in the group.
To enable forwarding for GOOSE packets, configure a generic Layer 2 tunnel to listen for GOOSE packets on
one VLAN and forward them to a second VLAN. To configure the generic Layer 2 tunnel for this operation, set the
following for the tunnel:
• Ethernet Interface: select the VLAN on which the GOOSE packets originate
• Ethernet Type: set as 0x88b8
• Remote Daemon: select the VLAN to which to forward the GOOSE packets
The following sections describe how to configure and manage GOOSE tunnels:
• Section 5.29.5.1, "Viewing the GOOSE Tunnel Statistics"
• Section 5.29.5.2, "Viewing a List of GOOSE Tunnels"
• Section 5.29.5.3, "Adding a GOOSE Tunnel"
• Section 5.29.5.4, "Deleting a GOOSE Tunnel"
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RUGGEDCOM ROX II
User Guide
Managing GOOSE Tunnels