Managing Virtual Switches - Siemens RX1500 User Manual

RUGGEDCOM ROX II
User Guide
1
Figure 182: On Demand Table
1. Add Button
3. Click Delete next to the chosen data link.
Click Commit to save the changes or click Revert All to abort. A confirmation dialog box appears. Click OK
4.
to proceed.
Click Exit Transaction or continue making changes.
5.
Section 3.25

Managing Virtual Switches

Virtual switches bridge different network segments together in a way that is independent of any particular
protocol.
Network traffic between segments is forwarded regardless of the IP and MAC addresses defined in packet. In a
virtual switch, forwarding is done in a Layer 2 and allows all network traffic, including L2 Multicast (i.e. GOOSE,
ISO), IP Multicast, Unicast and Broadcast messages, to travel through the virtual switch tunnel without any
modifications.
A virtual swtich can be useful, in particular, for GOOSE messaging when the sender and receiver need to
communicate through a routable IP network. Since there is no IP encapsulation for the L2 traffic going through
the virtual switch, network latency is minimized for the traffic between end devices.
The virtual switch appears on the device as a virtual Ethernet interface over a physical interface (i.e. T1/E1
HDLC-ETH or Ethernet port) between two routers. Physically, the two routers can be in different locations.
There can be multiple virtual switch instances in a router. Each instance can include two or more interfaces, but
an interface can only be a member of one virtual switch instance.
NOTE
There can be multiple virtual switch interfaces over a T1/E1 HDLC-ETH interface, in which the virtual
switch interfaces are separated by creating a VLAN over the T1/E1 HDLC-ETH interface.
A virtual switch interface in a router can be a routable interface when an IP address is assigned either statically
or through DHCP. The network address assigned to the virtual switch interface can be included in the dynamic
routing protocol. The interface can also call a routing update. The IP address assigned to the virtual switch can
be used as the default gateway for the end devices connected to the virtual switch interface. Network services,
such as SSH, DHCP, NTP, VRRP, etc., can be configured to run on the virtual switch interface.
When configuring a virtual switch, be aware of the following:
Managing Virtual Switches
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2. Edit Button 3. Delete Button
Chapter 3
Device Management
173