User's Manual

2. System Description 2-23

2.18.2 Network

EVENT 5800 uses an Out-of-Band NMS network that is separate from the payload

Ethernet network. Each EVENT 5800 contains a managed Layer 2 Ethernet switch that

supports Spanning-Tree Protocol (STP) for managing NMS traffic. This allows EVENT 5800

to be configured in a protected ring configuration where the STP will prevent an Ethernet

loop in the ring. This will also allow the ring to re-configure in the event of an outage.

EVENT 5800 acts as a network bridge via the Ethernet switch and STP. EVENT 5800 does

not currently support NMS routing capability.

2.18.3 NMS Network Operational Principles

EVENT 5800 does not provide routing capability. Therefore, all radios must be on the

same subnet as the PC being used to access the radios. If EVENT 5800 radios and/or the

PC are on different subnets, a router must be used with the gateway addresses set

appropriately. The following illustration shows the PC and both EVENT 5800 units in the

same subnet. In this case, no router is required.

SUBNET

192.168.1.10

SWITCH

SDIDUTM

192.168.1.21

SDIDUTM192.168.1.22

Figure 2-25. PC/EVENT 5800 on Same Subnet

The following illustration shows the PC and one EVENT 5800 in one subnet and the other

EVENT 5800 in another. In this case, a router is required. Note how the GW addresses

are set to allow communication from the PC to the EVENT 5800 in the other subnet.