Avaya Integrated Management
226 Avaya Application Solutions IP Telephony Deployment Guide
Centralized (hybrid)
The centralized management model strives to make all network management available in a
central location. It generally begins with a framework product such as HP OpenView NNM. This
framework product serves as an SNMP trap receiver for alarm data sent by networking devices.
It also provides network topology discovery and availability testing.
Figure 67: Centralized management model
Additional management tools, such as Avaya MultiService Network Manager, attach to the
framework (
Figure 67: Centralized management model
). They can be launched directly from
the underlying application, and can share data with it. This allows a network administrator to go
to a central location for most network management and configuration tasks. Client devices are
configured to send alarm and event data to the centralized manager, generally through SNMP.
The management station also has the ability to periodically poll the client for specific
information. This can be used to graph performance, for example. Polling can also be used for
inventory management.
There are many advantages to this model:
●
Because a centralized location is used, fewer administrators are required to manage a
network.
●
Administrators are more likely to catch critical information because it is all in one place.
●
Administrators need to learn fewer interfaces, which reduces training costs.
●
More advanced centralized management products offer event correlation, which increases
the likelihood of proactively catching a problem before it adversely affects users.
The disadvantage to the centralized model is cost. Typically, centralized management tools cost
more than distributed tools. In addition, the implementation and integration can be complex.
Finally, the enterprise must adjust the manager as the network changes. If the management
server is not actively maintained, it quickly falls into disuse.
Summary of Contents for Application Solutions
Page 1: ...Avaya Application Solutions IP Telephony Deployment Guide 555 245 600 Issue 3 4 1 June 2005 ...
Page 20: ...About This Book 20 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 21: ...Issue 3 4 1 June 2005 21 Section 1 Avaya Application Solutions product guide ...
Page 22: ...22 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 106: ...Call processing 106 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 124: ...Avaya LAN switching products 124 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 139: ...Issue 3 4 1 June 2005 139 Section 2 Deploying IP Telephony ...
Page 140: ...140 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 186: ...Traffic engineering 186 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 204: ...Security 204 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 228: ...Avaya Integrated Management 228 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 274: ...Reliability and Recovery 274 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 275: ...Issue 3 4 1 June 2005 275 Section 3 Getting the IP network ready for telephony ...
Page 276: ...276 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 356: ...Network recovery 356 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 366: ...Network assessment offer 366 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 367: ...Issue 3 4 1 June 2005 367 Appendixes ...
Page 368: ...Appendixes 368 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 394: ...Access list 394 Avaya Application Solutions IP Telephony Deployment Guide ...
Page 414: ...DHCP TFTP 414 Avaya Application Solutions IP Telephony Deployment Guide ...