Chapter 25 - Global Server Load Balancing; Using Gslb; Distributed Site Session Protocol (Dssp) - Radware Alteon Application Manual

Chapter 25 – Global Server Load Balancing
This chapter provides information for configuring Global Server Load Balancing (GSLB) across
multiple geographic sites. This chapter includes the following topics:
• Using GSLB, page 705
• Distributed Site Session Protocol (DSSP), page 705
• GSLB Overview, page 706
• GSLB and DNSSEC, page 712
• Configuring Basic GSLB, page 713
• Configuring a Standalone GSLB Domain, page 724
• Configuring GSLB with Rules, page 730
• Configuring GSLB Network Preference, page 733
• Configuring GSLB with Client Proximity, page 734
• Configuring GSLB with DNSSEC, page 743
• Configuring GSLB with Proxy IP for Non-HTTP Redirects, page 753
• Configuring GSLB Behind a NAT Device, page 757
• Using Border Gateway Protocol for GSLB, page 758
• Verifying GSLB Operation, page 759

Using GSLB

To use GSLB, you must purchase an additional software license and license string. Contact Radware
Technical Support to acquire additional software licenses. GSLB configurations running in earlier
versions of the Alteon are maintained after upgrading. When you upgrade the software image to the
new version, the configuration is migrated.
Once you have obtained the proper password key to enable GSLB, do the following:
1. Connect to the CLI via Telnet or the console port, and log in as the administrator, following the
directions in the "Command Line Interface" chapter of the Alteon Application Switch Operating
System Command Reference.
2. From the CLI, enter the
You are prompted to enter the license string. If it is correct for this MAC address, Alteon accepts
the password, permanently records it in non-volatile RAM (NVRAM), and then enables the
feature.

Distributed Site Session Protocol (DSSP)

Distributed Site Selection Protocol (DSSP) is a Radware proprietary protocol for supporting Alteon
GSLB functionality which resides above TCP. It enables Alteons in various sites to communicate and
exchange required GSLB data and statuses. Availability is determined by regular health checks to
determine the status of a remote real server. It enables the sending and receiving of remote site
updates. DSSP supports server response time and sessions available in the remote site updates.
Document ID: RDWR-ALOS-V2900_AG1302
command.
/oper/swkey
705