Sybase DC35823-01-1500-04 - Manual (Page 79)

CHAPTER 5 Setting Up Communications Across the Network
Configuration Guide 63
The following example shows how to configure a backup network that
will be used only if the normal connection fails. The primary network is
“corporate network” and backup is “engineering network.”
# PRODUCTION server with two network listeners
PRODUCTION<tab>3<tab>3<newline>
<tab>master tcp ether SERV_CORPNET 4559
<tab>master tcp ether SERV_ENGNET 5479
<tab>query tcp ether SERV_CORPNET 4559
<tab>query tcp ether SERV_ENGNET 5479
3 Configure PC-client interfaces files with the appropriate multiple “query”
entries, as described in the Open Client documentation. For client
interfaces files in a homogeneous environment, you can copy the entire
interfaces file entry for the Adaptive Server into the client interfaces file.
4 A connection on the secondary port occurs only if the corporate network
is disabled, or if the corporate network interface on the host machine fails
or is shut down due to a network-related failure.
IPv6 support
Adaptive Server supports IPv6 technology.
Understanding IPv6
IPv6 addressing terminology:
• Link-local address – an IPv6 address that is usable only over a single link.
• Site-local address – an IPv6 address that can be used within a single-site.
• Global address – an IPv6 address that can be used across the global
Internet.
IPv6 application types:
• IPv6-unaware – an application that cannot handle IPv6 addresses.
• IPv6-aware – an application that can communicate with nodes that do not
have IPv4 addresses. In some cases, this might be transparent to the
application, for instance when the API hides the content and format of the
actual addresses.