Chapter 12 Replication and High Availability

Setting up replication

Step 1 Create a backup of the Cisco NAC Guest Server before starting by following the Taking a snapshot instructions in Configuring Backup Settings, page 11-2.

Step 2 From the administration interface select Authentication > Replication Settings from the left hand menu (Figure 12-1).

Figure 12-1 Replication Settings

Step 3 Enter the Remote Guest Server address. This is the address of the Cisco NAC Guest Server that you want to enable replication with.

Step 4 Enter a Shared Secret and confirm it. The shared secret is used to authenticate with the other Cisco NAC Guest Server. The shared secret must be identical on both Guest Servers.

Step 5 Set the Replication Mode to be On.

NoteSetting a servers Replication Mode to be Off removes it from the replication process. There is no method of re-synchronizing a Server without starting the process from the beginning and by doing this you will loose non-replicated data on one of the Servers. Only turn Replication off if you are making a standalone system.

Step 6 Turning on replication enables you to specify whether this server is the one that contains the current data or will copy data from the other server. Choose This node contains the data if you want to keep the data from this server. Choose This node will copy data from other node if you want to erase all data on this server and copy the data from the other server.

Warning Make sure you set these correctly on each server otherwise you will loose data. It is advised to take a backup before running this procedure.

Step 7 Click Save Settings to save the settings and turn on the replication process.

Step 8 Repeat Step 1 through Step 7 to set up replication on the other Cisco NAC Guest Server.

 

Cisco NAC Guest Server Installation and Configuration Guide

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OL-15986-01

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Cisco Systems OL-15986-01 manual Set the Replication Mode to be On, 12-2

OL-15986-01 specifications

Cisco Systems OL-15986-01 refers to a specific online training course offered by Cisco, primarily focusing on the implementation and configuration of Cisco routers and switches. This course is part of the larger Cisco Networking Academy program, designed to equip individuals with the necessary skills to enter and succeed in the networking field.

One of the main features of OL-15986-01 is its comprehensive curriculum that covers a wide range of networking concepts including IP addressing, routing protocols, switching technologies, and network management. The coursework emphasizes practical, hands-on experience, allowing students to work with various Cisco technologies, whether through simulations or actual equipment. This aligns with Cisco's commitment to experiential learning, enabling students to apply theoretical knowledge in real-world scenarios.

The course also incorporates advanced technologies and methodologies. For example, it delves into IPv6 addressing and its significance in modern networking, alongside traditional IPv4. Routing protocols such as OSPF, EIGRP, and BGP are discussed in detail, providing learners with insights into how data is routed efficiently across different networks. Additionally, the course covers switching technologies, including VLANs, STP, and EtherChannel, which are essential for configuring robust and efficient local area networks (LANs).

Another noteworthy characteristic of OL-15986-01 is its focus on network security. Students learn about the vulnerabilities that networks face and how to implement security measures to protect network infrastructure. Topics include secure access methods, firewall configurations, and the use of VPNs for secure remote access.

Furthermore, the course emphasizes troubleshooting techniques, empowering students with the skills to identify and resolve network issues effectively. Practical lab sessions and assessments allow learners to demonstrate their comprehension of networking principles and their ability to apply them in various situations.

Ultimately, Cisco Systems OL-15986-01 is designed for individuals seeking to boost their networking knowledge and skillset, paving the way for careers in IT infrastructure management, network engineering, and other technology-related fields. By completing this course, participants gain a solid foundation in networking that can lead to valuable Cisco certifications, enhancing their professional credibility in a competitive job market.