Nortel SMC 2450, Implementation Manual

Page: 78 / 262

Page 78 of 260 Installation and configuration
553-3001-225 Standard 1.00 May 2006
address. The host IP address and the cluster MIP address must reside in the
same subnet.
High Availability (HA) configuration
In the HA configuration, each SMZ requires three IP addresses: one IP
address for each physical SMC interface and a Virtual Router Redundancy
Protocol (VRRP) address. The VRRP address is hosted by the VRRP master
and floats to the backup if the master fails. For more information about
VRRP, see “VRRP overview” on
page 175 .
IMPORTANT!
In a stand-alone configuration, the equipment residing on the SMZs
uses the SMC Interface IP addresses as their gateway address. For
example, a CSE-1000 Signaling Server TLAN Gateway address is the
SMC TLAN IP address
IMPORTANT!
In a High Availability configuration, the equipment residing on the SMZs
uses the SMC Virtual IP addresses as their gateway address.
When upgrading from a stand-along SMC to a High Availability SMC
installation, review carefully the IP addressing scheme so that the
equipment in the SMZs do not need the gateway addresses changed.
For example, when upgrading from stand-alone to a High Availability
configuration, change the IP addressing so the existing SMC interface IP
addresses are used as the Virtual IP addresses when the HA config is
implemented.