User guide

Configuring Network Services Protection Switching-EPSR
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AlliedView NMS Administration Guide
• VLAN Protection Scheme - Type of protection you wish for your data network VLANs
Note: Currently, EPSR is the only protection scheme used.
• Control Data (part of the TAPS protocol)
• HelloTime – The rate at which the protocol Health control message is sent by the master node for this EPSR domain.
• FailOverTime – Time for which the master node waits before declaring that it has detected a break in the ring for this
EPSR domain.
• RingFlap Time – The minimum number of seconds that a master node must remain in the failed state (before moving
to the complete state), even if the ring has recovered from its fault condition. This delay is to limit unnecessary
blocking and unblocking of the secondary port when a link in the ring is flapping (intermittently recovering from its
fault). The default is 0.
• Link Ports – The two ports that are members of the EPSR domain.
6.13.2 The Network VLAN Manager Application - Configure Control Ring
Following are the major steps to create an EPSR configuration using the Network VLAN application. The focus will be on the
screens and the fields/buttons. A more step-by-step procedure is given in 6.13.5.
6.13.2.1 Create Network VLAN
Part of configuring EPSR is creating Network VLANs that can be configured as control rings or protection rings. The
procedure is the same as creating any Network VLAN, as described in 6.3.1.
6.13.2.2 Configure EPS Control Ring
There are two ways to create the control ring using the Network VLAN Manager, depending on what has already been
configured:
• Option 1 - If a Ring Network VLAN has been defined, it can be configured with an EPS protection domain.
• Option 2 - If a non-Ring Network VLAN has already been defined, it can be extended to form an EPS control ring.
For option 1, if a Ring Network VLAN has been created, it can be configured as an EPS Control Ring by selecting the
Network VLAN and choosing the Configure EPS Control Ring.. option, as shown in the following figure.
Note: This drop-down is also available from the VLAN maps.
FIGURE 6-108 Pull-Down to Configure EPS Control Ring