Nortel Networks NN43001-121 - Manual (Page 43)

Load Balancer planning 43
Mediation servers supports only TCP. However, it can interact with TLS
gateway through SPS. SPS can act as a redirect server for SIP messages
so the link between CS 1000 and the SPS can be TLS.
Load Balancer planning
This section provide information on the Load Balancer requirements.
Load balancer navigation
• "Load Balancer prerequisites" (page 43)
• "Load Balancer requirements" (page 44)
• "Redundancy with Load Balancers" (page 45)
• "High scale and high availability configuration" (page 45)
• "Nortel Application Switch (NAS)" (page 46)
Load Balancer prerequisites
• Before you configure a Load Balancer to connect to the Office
Communications Server Enterprise pool, ensure you configure the
following:
— The Load Balancer must meet the Microsoft criteria for a Load
Balancer. See "Load Balancer requirements" (page 44)
— Configure a static IP address for servers within your pool.
— For each server within the pool a certificate, include for both user
and server authentication issued by a certification authority in the
pool’s local domain.
— Configure a VIP address and a DNS record for the load balancer.
— Test users created and SIP-enabled in the pool.
— Install root certificate from CA in the domain (or trusted CA) on client
computers.
— Log on to all servers in the pool using TLS to ensure server and
client certificates work.
— Configure Port 135 on Load Balancers to enable server-side
block and allow functionality for users and move user scenarios to
pools through DCOM. For example, perform remote DCOM-based
database operations. Nortel recommends the minimum
configuration.
Nortel Communication Server 1000
Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007
NN43001-121 01.03 Standard
Release 5.0 30 April 2008
Copyright © 2005–2008, Nortel Networks
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