1. DASAN NETWORKS GPON Training
Chapter 4. Enable mode configuration

2. www.dasannetworks.eu Table of contents Displaying System Configuration
System Configuration Management
Restoring Default Configuration
Running Process
Core Dump File
Network Connection
Displaying Users Connected to System
MAC Table
System Information
Packet Dump and Debug Packet Dump
OLT Rebooting

3. www.dasannetworks.eu Introduction
Privileged EXEC Enable Mode - To configure the switch, you need to open Privileged EXEC Enable mode with the enable command, then the system prompt will changes from SWITCH> to SWITCH#.
To access this level, You should set on CLI:
SWITCH login: admin
Password:
SWITCH> enable
SWITCH#
The same is on all DASAN OLTs: V5812G|V5824G|V8240

4. 1. Displaying System Configuration

5. 2. System Configuration Management

6. 3. Restoring Default Configuration
Please remember that after:
restore layer2-defaults – running and startup configuration will be cleared to default – saved config files will be still presents (show config-list):
restore factory-defaults – running and startup configuration will be cleared to default and also all saved config files will be deleted (show config-list)

7. www.dasannetworks.eu 4. Running Process
Running Process DASAN OLTs provides a function that shows information of the running processes. The information with this command can be very useful to manage the switch.

8. www.dasannetworks.eu 5. Core Dump File
Core Dump File A core dump file contains the memory image of a particular process, or the memory images of parts of the address space of that process, along with other information such as the values of processor registers. The V5812G can be configured to generate core dumps and save them in ramdisk for useful debugging aids in several situations such as accesses to non-existent memory, segmentation errors.

9. www.dasannetworks.eu 6. Network Connection Network Connection
T o verify if your system is correctly connected to the network, use the ping command. For IP network, this command transmits a message to Internet Control Message Protocol (ICMP). ICMP is an internet protocol that notifies fault situation and provides information on the location where IP packet is received. When the ICMP echo message is received at the location, its replying message is returned to the place where it came from.
Tracing Packet Route
You can discover the routes that packets will actually take when traveling to their destinations. To do this, the traceroute command sends probe datagrams and displays the round-trip time for each node.

10. 7. Displaying Users Connected to System

11. www.dasannetworks.eu 8. MAC Table
If You want to check on which port one MAC address is connected, You can use „| include” option:

12. 9. System Information

13. 10. Packet Dump and Debug Packet Dump (1)
Failures in network can occur by certain symptom. Each symptom can be traced to one or more problems by using specific troubleshooting tools. DASAN OLTs provides the debug command to dump packet. Use debug commands only for problem isolation. Do not use it to monitor normal network operation. The debug commands produce a large amount of processor overhead.

14. 10. Packet Dump and Debug Packet Dump (2)
DASAN OLTs provides network debugging function to prevent system overhead for unknown packet inflow. Monitoring process checks CPU load per 5 seconds. If there is more traffic than threshold, user can capture packets using tcpdump and save it to file. You can download the dump file with the name of file- number.dump after FP connection to the system. See the dumped packet contents with a packet analyze program.
EXAMPLE:
SWITCH# debug packet log
when cpuload will be higher then 90% for at least 30 seconds, OLT will create automatically dump file with 1000 number of packets which can cause CPU overload at this time. OLT will create up to 10 files.

15. www.dasannetworks.eu 11. OLT Rebooting
When installing or maintaining the system, some tasks require rebooting the system by various reasons. Then you can reboot the system with a selected system OS. System rebooting wipes all the existing configurations. To save the configurations before the rebooting, answer “y” to the question Do you want to save the system configuration? [y/n]. If you answer “n” by misoperation, answer “n” to the next question Do you want to reload the system? [y/n] to cancel the rebooting and start the operation all over again.
Please remember about save configuration before reload – otherwise You will lost configuration which was not saved before.

16. Thank You If You need help please contact: support@dasannetworks.eu