Index_O

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O

Off-site data storage, 69–70

OpenNMS, 279–80

Open Shortest Path First (OSPF), 109, 110

Open source management tools, 277–84

Big Sister, 281, 282

defined, 278

FAQs, 278

mon, 281–83

multirouter traffic grapher (MRTG), 280

OpenNMS, 279–80

risk factors, 283–84

Round Robin Database (RRD), 280–81

sample, 278–83

from strategic perspective, 278

See also Network management systems (NMSs)

Open System Fabric Initiative (OSFI), 92

OpenView, 68, 342

automated operations and, 68

Storage Node Manager, 90

Operating systems, maintenance/support, 401–2

Operations management, 389–90

Orchestream software, 292

OSI reference model, 99–100

application layer, 100

bridge functionality and, 101

data link layer (DLL), 99–100

gateway functionality in, 117

network layer, 100

physical layer, 99

presentation layer, 100

routers and, 107

session layer, 100

transport layer, 100

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