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System Administration Guide: IP Services Oracle Solaris 11 Express 11/10 |
1. Planning an IPv4 Addressing Scheme (Tasks)
2. Planning an IPv6 Addressing Scheme (Overview)
3. Planning an IPv6 Network (Tasks)
4. Configuring TCP/IP Network Services and IPv4 Addressing (Tasks)
5. Enabling IPv6 on a Network (Tasks)
6. Administering a TCP/IP Network (Tasks)
8. Troubleshooting Network Problems (Tasks)
Common Problems When Deploying IPv6
IPv4 Router Cannot Be Upgraded to IPv6
Problems After Upgrading Services to IPv6
Current ISP Does Not Support IPv6
Security Issues When Tunneling to a 6to4 Relay Router
9. TCP/IP and IPv4 in Depth (Reference)
12. Planning for DHCP Service (Tasks)
13. Configuring the DHCP Service (Tasks)
14. Administering DHCP (Tasks)
15. Configuring and Administering the DHCP Client
16. Troubleshooting DHCP (Reference)
17. DHCP Commands and Files (Reference)
18. IP Security Architecture (Overview)
20. IP Security Architecture (Reference)
21. Internet Key Exchange (Overview)
23. Internet Key Exchange (Reference)
24. IP Filter in Oracle Solaris (Overview)
Part IV Networking Performance
26. Integrated Load Balancer Overview
27. Configuration of Integrated Load Balancer Tasks
28. Virtual Router Redundancy Protocol (Overview)
29. VRRP Configuration (Tasks)
30. Implementing Congestion Control
Part V IP Quality of Service (IPQoS)
31. Introducing IPQoS (Overview)
32. Planning for an IPQoS-Enabled Network (Tasks)
33. Creating the IPQoS Configuration File (Tasks)
34. Starting and Maintaining IPQoS (Tasks)
35. Using Flow Accounting and Statistics Gathering (Tasks)
One of the first signs of trouble on a network is a loss of communications by one or more hosts. If a host does not to come up at all the first time that the host is added to the network, the problem might be in one of the configuration files. The problem might also be a faulty network interface card. If a single host suddenly develops a problem, the network interface might be the cause. If the hosts on a network can communicate with each other but not with other networks, the problem could lie with the router. Or, the problem could be in another network.
You can use the ipadm command to obtain information on network interfaces. Use the netstat command to display routing tables and protocol statistics. Third-party network diagnostic programs provide a number of troubleshooting tools. Refer to third-party documentation for information.
Less obvious are the causes of problems that degrade performance on the network. For example, you can use tools such as ping to quantify problems such as the loss of packets by a host.
If the network has problems, you can run a series of software checks to diagnose and fix basic, software-related problems.
For syntax and information about the netstat command, refer to Monitoring Network Status With the netstat Command and the netstat(1M) man page.
For information about the /etc/inet/hosts database, refer to hosts Database and the hosts(4) man page.
For syntax and information about telnet, refer to the telnet(1) man page.
# ps -ef | grep inetd
The following output verifies that the inetd daemon is running:
root 57 1 0 Apr 04 ? 3:19 /usr/sbin/inetd -s
# ps -ef | grep in.ndpd
The following output verifies that the in.ndpd daemon is running:
root 123 1 0 Oct 27 ? 0:03 /usr/lib/inet/in.ndpd