Design for High Availability
Issue 3.4.1 June 2005
271
Case Study IV (99.999% availability in Atlanta,
99.99% full system availability)
With Avaya Communication Manager 2.0, the Avaya G650 Media Gateway can provide the
optimum 99.999% availability using redundant IPSI connections. The G650 configuration
supports two IPSI circuit packs in active/standby mode.
The call control link to the media gateways is fully redundant. Upon any link or device failure,
there will be a failover to the standby path.
When engineered with duplicated IPSI-2 and N+1 C-LAN and MedPro circuit packs, the G650
Media Gateway reliability assessment projects 99.9995% availability. The following
recommendations based upon our example case environment ensure the objective availability
value is attainable.
●
G650 with redundant IPSIs in Atlanta and Boston Offices.
●
LSP as the alternate gatekeeper and call controller in Cleveland.
●
A fully redundant data network. In order to fully take advantage of the duplicated link
connection between the media servers and media gateways, the WAN path (when
calculated using redundant circuits) should be 99.995% to 99.999% available. It is
expected that every link has sufficient bandwidth to handle the full load of converged
traffic.
Note:
Note:
For these calculations, the LAN between the servers and the IPSIs is assumed to
have been engineered to meet 99.999% availability.
% of traffic between Boston and Cleveland
×
Annual downtime minutes due to failure in
Boston, WAN and in Cleveland
(0.9% + 0.9%)
×
563 = 13
Aggregated Downtime
112.25 minutes
(15 + 9.5 + 27 + 0.75 + 47 +
13)
System Availability = 99.98%
Table 62: Inter-Site Traffic Availability improved with Redundant WAN
Connections (continued)
Full Solution Availability Projected
Weighted Downtime
minutes.
2 of 2
Содержание Application Solutions
Страница 1: ...Avaya Application Solutions IP Telephony Deployment Guide 555 245 600 Issue 3 4 1 June 2005 ...
Страница 20: ...About This Book 20 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 21: ...Issue 3 4 1 June 2005 21 Section 1 Avaya Application Solutions product guide ...
Страница 22: ...22 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 74: ...Avaya Application Solutions platforms 74 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 106: ...Call processing 106 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 124: ...Avaya LAN switching products 124 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 139: ...Issue 3 4 1 June 2005 139 Section 2 Deploying IP Telephony ...
Страница 140: ...140 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 186: ...Traffic engineering 186 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 204: ...Security 204 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 214: ...Voice quality network requirements 214 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 228: ...Avaya Integrated Management 228 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 239: ...Reliability Issue 3 4 1 June 2005 239 Figure 69 S8700 Media Server in a high reliability configuration ...
Страница 274: ...Reliability and Recovery 274 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 275: ...Issue 3 4 1 June 2005 275 Section 3 Getting the IP network ready for telephony ...
Страница 276: ...276 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 350: ...Implementing Communication Manager on a data network 350 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 356: ...Network recovery 356 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 366: ...Network assessment offer 366 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 367: ...Issue 3 4 1 June 2005 367 Appendixes ...
Страница 368: ...Appendixes 368 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 394: ...Access list 394 Avaya Application Solutions IP Telephony Deployment Guide ...
Страница 414: ...DHCP TFTP 414 Avaya Application Solutions IP Telephony Deployment Guide ...