About software duplication
About software duplication
Software duplication eliminates the need for the DAL2 duplication cards in duplicated S8720 and S8730 Servers. Software duplication is supported only on the S8720 and S8730 and is the default configuration. For software duplication, all duplication messages are sent over the server duplication TCP/IP link.
An S8720 or S8730 communications system configured with software duplication has lower call performance than the same system configured with hardware duplication. Encrypting duplication messages further degrades performance. For software duplication, Avaya recommends that you use a dedicated duplication link with a bandwidth of at least 1 Gigabit per second.
The S8720 and S8730 Server is shipped without the optional DAL2 hardware duplication card. If purchased, the DAL2 hardware duplication cards and the dual fiber cable that links the DAL2 cards are installed in the servers at the customer site.
The duplication type, that is, hardware or software, is administered as a Configure Server step on the Server Duplication Web page in the Maintenance Web Interface.
About SSH
Secure Shell (SSH) is both a computer program and an associated network protocol that you use to log in to and run commands on a networked computer. SSH provides secure encrypted communications between two untrusted hosts over an insecure network. Avaya strongly recommends that you use SSH instead of Telnet for most interactive connections to the Avaya servers and other devices on a customer network.
To use SSH, a
You can use SSH to access the following devices:
●The S8300, S8400, S8500, and
Note:
With Release 4.0 or later of Communication Manager, Telnet is disabled, so you must use SSH to access the servers after Communication Manager software Release 4.0 or later is installed.
●A Maintenance Processor Complex (MPC), which is used with the S8400 Server
●A TN2312BP IPSI that is running firmware version 20 or higher
●A TN8412AP SIPI
Installing and Configuring the Avaya | January 2008 21 |