Maintenance architecture
Issue 3.4.1 June 2005
249
IP endpoint and remote media gateway recovery
Avaya’s distributed IP-based systems can also enjoy increased availability by virtue of the
“alternate gatekeeper.” When IP Telephones register with Communication Manager, they are
given a list of “alternate gatekeepers” to which they can re-register in the event of a failure.
Thus, if a C-LAN fails or becomes unavailable, users that are registered to that C-LAN can
re-home to another C-LAN that is unaffected by the failure.
This section covers:
IP endpoint recovery
Recovery algorithm
G700/G350 Media Gateway recovery
Table 53: S8700 system software availability
System
SW loads Avaya CM 1.1
through Avaya CM 1.36
1
1. Based on 2,737 system-days of software reliability data collected from 14 different
(early-introduction and in-house) systems.
SW loads beyond Avaya
CM 1.2 and Avaya CM
1.37
2
2. Based on 1,337 system-days of software reliability data collected from 6 different
(early-introduction and in-house) systems.
S8700 Server
Complex
90% Confidence:
4.52 - 5.54 nines
95% Confidence:
4.47 - 5.79 nines
90% Confidence:
5.36 - 6.24 nines
95% Confidence:
5.28 - 6.44 nines
Multi-Connect
S8700 Software
(due to longer
recovery times for
non-IPSI PNs)
90% Confidence:
4.45 - 5.47 nines
95% Confidence:
4.40 - 5.72 nines
90% Confidence:
5.28 - 6.17 nines
95% Confidence:
5.20 - 6.37 nines
IP-Connect S8700
Software
90% Confidence:
4.58 - 5.61 nines
95% Confidence:
4.52 - 5.86 nines
90% Confidence:
5.41 - 6.31 nines
95% Confidence:
5.33 - 6.51 nines
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 ...