Configuring Storm Control on Alcatel OmniStack LS 6224

In this article I will give an example of setting up broadcast and multicast control on the Alcatel OmniStack LS 6224 switch.

Connect to the switch and go into the configuration mode:


Select the ports on which you want to enable Storm Control:

interface range ethernet e1-24

Turn on the control of broadcast traffic and specify a limit of 70 kilobits per second:

port storm-control broadcast enable
port storm-control broadcast rate 70

If you want to limit also multicast traffic, then execute the following command:

port storm-control include-multicast

The standard value is 3500, the possible range for ethernet ports is 70 – 100000, for gigabit ports 3500 – 1000000.

Now it remains to exit the configuration mode and save the configuration:

copy running-config startup-config

To see the data of the packet counters on the port, for example:

show interfaces counters ethernet g1

Firmware Upgrade Alcatel OmniStack LS 6224

I will describe the process of updating the firmware on Alcatel OmniStack LS 6224.

Let’s connect to the device and switch to the mode of elevated privileges:


See the current firmware version:

show version

We look at what firmware versions are downloaded and what is active:

show bootvar

See how much memory is free:


Run the command to copy the firmware file from the TFTP server to the switch:

copy tftp:// image-2

I had an active firmware image-1, so I saved a new one like image-2.
I used the firmware version

Let’s make an active uploaded firmware:

boot system image-2
show bootvar

We reboot the switch:


After reboot, the switch will boot with the new firmware.

If necessary, the firmware file can also be copied from the switch to TFTP:

copy image-1 tftp://

How to start the TFTP server I described in these articles:
Installing and Configuring a TFTP Server in Ubuntu
Starting a TFTP server in Windows

Reset Alcatel OmniStack LS 6224

I will describe examples of resetting the settings on the Alcatel OmniStack LS 6224 in several ways.

1) Connect to the device and execute the command to delete the configuration and restart:

delete startup-config

Just in case, before deleting the configuration, you can make a backup copy to the tftp server or locally:

copy startup-config tftp:// 
copy startup-config startup-config-backup

To return it is possible so:

copy tftp:// startup-config
copy startup-config-backup startup-config

2) If the password for the switch is unknown, then connect to it with a console cable, the speed is usually 9600.
Turn on the power switch, waiting for the message:

Autoboot in 2 seconds – press RETURN or Esc. to abort and enter prom.

When the message appears – press the “Enter” or “Esc” key, in the resulting menu select “[3] Password Recovery Procedure”, then “[7] Back” and wait for the device to start.

After that, the switch will start and will not ask for the password, just delete the configuration as I wrote above or change the password to the user:

username admin password PASSWORD level 15
copy running-config startup-config

Configuring Loopback Detection on Alcatel OS-LS 6200

For example, configure Loopback Detection on the Alcatel OmniStack LS 6224 switch.

Let’s look at the current settings for Loopback Detection:

show loopback-detection

Let’s go into the configuration mode, enable and specify some parameters of Loopback Detection:

loopback-detection enable
loopback-detection mode src-mac-addr
loopback-detection interval 30

Turn on the client ports Loopback Detection:

interface range ethernet e1-24,g2-4
loopback-detection enable

g1 I have an uplink, so I did not enable Loopback Detection on it.

Let’s configure automatic activation of the port after 3000 seconds, if it was turned off due to the loop (you can specify the value in seconds 30-86400, standard 300):

errdisable recovery interval 3000
errdisable recovery cause loopack-detection
show errdisable recovery
show errdisable interfaces

Exit the configuration mode and save the configuration:

copy running-config startup-config

Configuring the Alcatel OmniStack LS 6224

By the way, console cable for Huawei and D-Link switches (for example S2326TP, DES-3200) did not approach the Alcatel OmniStack LS 6224, because it does not use the first contact.
When I assembled the working cable according to the scheme, it did not work through the Chinese USB-RS232 adapter, so I had to connect directly to the COM port of the computer.
The standard connection speed is 9600-8-N-1.

The circuit on which I assembled the cable:
1 – white-brown
2 – green
3 – white-green
4 – orange
5 – blue and white-blue
6-4 – jumper
7 – white-orange
8 – brown

Where the digits are RS-232, but I crimped the RJ45 according to the standard)

After connecting to the switch, we will switch to the mode of elevated privileges:


Let’s look at the existing configuration:

show running-config
show startup-config

Now go into the configuration mode:


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