User guide

Example Scenario Protection Switching-EPSR
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AlliedView NMS Administration Guide (Configuring Network Services)
• EPSR and other protection schemes (STP/RSTP) are mutually exclusive; ports that use EPSR will have STP disabled.
• Ensure that a loop is not created while provisioning the protected VLANs (or ensure that there is no traffic on the pro-
tected VLANs until the VLAN is added to the EPSR domain).
• Provisioning can be done in two ways:
• Pre-provision - The AlliedView NMS allows the administrator to pre-provision the cards, links, and network VLANs.
This does not affect current traffic since the hardware does not actually exist. Once the configuration is tested (GUI
maps are checked), the hardware can be installed, links actually connected between devices, and the states of the
devices will change so they are ready to pass traffic as pre-provisioned.
• Post-provision - All the hardware is already provisioned, allowing the administrator to provision the EPSR control
ring, add existing traffic-live network VLANS, and protect them.
Keeping in mind the rules above, the administrator should plan out the following:
• The devices, ports, and links between the ports that will be included in the EPSR configuration.
• The name and number of the control VLAN.
• The name of the domain that will include the master and transit devices, and for the master device which interfaces
(ports) will be initially primary and secondary.
• The name and number of the protected VLAN(s) to be added to the EPSR domain.
6.13.5 Example Scenario
Figure 6-123 shows the physical/logical configuration for the example scenario.
FIGURE 6-123 Example Ring Topology - Physical/Logical
6.13.5.1 Set up the Links Between the Ports
Using the NMS physical link feature, create a spreadsheet that includes the links (with devices and ports) that will be
included in the EPSR configuration. Load the spreadsheet so that the physical links in Figure 6-124 are known to the Allied-
View NMS. The following figure shows an example spreadsheet. Refer to 6.7.5 for creating and importing a spreadsheet.