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xStack
®
DGS-3600 Series Layer 3 Gigabit Ethernet Managed Switch
Figure 6- 34. BPDU Tunneling Settings window
The following fields can be configured:
Parameter Description
BPDU Tunneling State
Use the drop down menu to
Enable
or
Disable
the BPDU state.
Unit
Select the unit you wish to configure.
From….To
Specify the ports on which the BPDU Tunneling will be enabled of disables.
Type
Use the drop down menu to select the configuration type.
Tunnel
– Specifies that the BPDU is received from a tunnel port, this packets DA will be
replaced by a reserved multicast address and then sent out to a providers network
through the uplink port.
Uplink
– Specifies that the port is a normal switch port which connects to the network
provider. The encapsulated PDU received on the uplink port shall be terminated and the
DA is replaced with the STP/GVRP MAC address, the packet is then sent to the tunnel
port in the same VLAN.
None
– When selected an encapsulated PDU is received on a port and the forwarding
behavior follows the forwarding of general multicast addresses.
None
is the default.
STP/GVRP
Select the type of tunnel multicast address to be applied to the ports either
STP
or
GVRP
. An STP enabled port can not be configured as an STP tunnel port. A GVRP
enabled port can not be configured as a GVRP tunnel port.
Click
Apply
to implement changes made.
RSPAN
RSPAN (Remote Switched Port Analyzer) is a feature used to monitor and analyze the traffic passing through ports. The character
‘R’ is short for ‘Remote’ which means that the mirror source ports and the destination port are not on the same Switch. So a
remote mirror session consists of at least two switches. To achieve the remote mirroring function, the mirrored traffic is tagged
with a reserved VLAN which is called an RSPAN VLAN, the RSPAN VLAN is reserved in such a way that traffic tagged with
RSPAN will be mirrored toward the associated destination port.
There are three roles for switches in RSPAN.
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