Sybase DC35823-01-1500-04 manual Configuring the client connections

Configuring interfaces files for multiple networks

2In your interfaces file, use a text editor to add copies of the “master” line for your Adaptive Server; one for each additional interface you want the server to listen on.

3Include a unique host name on each line to configure a network handler for each network interface.

4Port numbers within the interface need not be the same, but they can be. They fall under the same rules for naming and numeric range as the primary network interface.

Sample interfaces files for multiple network handlers

The following example shows an interfaces file for an Adaptive Server with two network interfaces. The server host machine is known as SERV_CORPNET on the corporate network and SERV_ENGNET on the 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

When Adaptive Server restarts, it spawns a network handler process for each master line in the entry that corresponds to the server’s DSLISTEN value. Connections made on each interface are handled equally, as peers.

Configuring the client connections

When an Adaptive Server client scans the interfaces file for a server name, the client uses the first “query” entry it encounters for the server’s entry. This makes configuring clients to use multiple network connections less straightforward than configuring the server ports. You have two choices:

•Use the same DSQUERY name for all clients. The interfaces files on the different machines contain different network names.

•Use different DSQUERY names for the clients. The interfaces files on all the machines are the same, but they contain multiple DSQUERY names.

60 Adaptive Server Enterprise