Digisol DG-FS4526E, Management Manual

Page: 435 / 1162

C
HAPTER
15 | Basic Administration Protocols
Ethernet Ring Protection Switching
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WTR Timer – The wait-to-restore timer is used to verify that the ring
has stabilized before blocking the RPL after recovery from a signal
failure. (Range: 5-12 minutes)
If the switch goes into ring protection state due to a signal failure, after
the failure condition is cleared, the RPL owner will start the wait-to-
restore timer and wait until it expires to verify that the ring has
stabilized before blocking the RPL and returning to the Idle (normal
operating) state.
Control VLAN – A dedicated VLAN used for sending and receiving
E-APS protocol messages. (Range: 1-4093)
Configure one control VLAN for each ERPS ring. First create the VLAN to
be used as the control VLAN (see "Configuring VLAN Groups" on
page 170 ), add the ring ports for the east and west interface as tagged
members to this VLAN (see "Adding Static Members to VLANs" on
page 172 ), and then use this parameter to add it to the ring.
The Control VLAN must not be configured as a Layer 3 interface (with
an IP address), a dynamic VLAN (with GVRP enabled), nor as a private
VLAN. In addition, only ring ports may be added to the Control VLAN.
No other ports can be members of this VLAN. Also, the ring ports of the
Control VLAN must be tagged. Failure to observe these restrictions can
result in a loop in the network.
Once the ring has been activated, the configuration of the control VLAN
cannot be modified. Use the Admin Status parameter to stop the ERPS
ring before making any configuration changes to the control VLAN.
W
EB
I
NTERFACE
To create an ERPS ring:
1. Click Administration, ERPS.
2. Select Configure Domain from the Step list.
3. Select Add from the Action list.
4. Enter a name for the ring in the “Domain Name” field.
5. Click Apply.
Figure 254: Creating an ERPS Ring