Average Response Time (ART) mac-table flush

WhoYouNow

Hi all! How can I automate the process of cleaning the mac address table. Due to the frequent use of Apple technique and the constant change of mac address, I have overflow. Where can I find the configuration in nebula?

Zyxel_Kay

Hi @WhoYouNow

Thank you for sharing your switch models.

Currently, Nebula Cloud does not provide a mechanism for Nebula switches to automatically flush the MAC table. Generally, automatically flushing the MAC table is not reasonable as it may lead to short-term traffic forwarding issues.

By the way, the switch defaults to flushing the port MAC when the port client does not respond for at least 5 minutes, and when the port is unplugged. However, it does not flush the table by interval automatically.

Additionally, you can flush the MAC table via the SSH command: mac-flush [<port-num>]. For switches running firmware version V4.80 or above, you can access it remotely via the 💎 Remote SSH function on Nebula CC. For firmware versions V4.70 or below, please access SSH locally.

Zyxel_Kay

Hi @WhoYouNow

For the switches, there is no difference between the physical real MAC address and the virtual MAC address.

When a MAC address dynamically changes, the mechanism we mentioned will age out the MAC address from the MAC table if there is no response for 5 minutes.

Zyxel_Kay

Hi @WhoYouNow

Could you please let us know the switch model and the firmware version you are currently using?

WhoYouNow

XGS1930-28HP V4.70(ABHS.7) | 11/30/2023 (Latest)
XS1930-12F V4.80(ABZV.3) | 10/06/2023 (Latest)

Zyxel_Kay

Hi @WhoYouNow

Thank you for sharing your switch models.

Currently, Nebula Cloud does not provide a mechanism for Nebula switches to automatically flush the MAC table. Generally, automatically flushing the MAC table is not reasonable as it may lead to short-term traffic forwarding issues.

By the way, the switch defaults to flushing the port MAC when the port client does not respond for at least 5 minutes, and when the port is unplugged. However, it does not flush the table by interval automatically.

Additionally, you can flush the MAC table via the SSH command: mac-flush [<port-num>]. For switches running firmware version V4.80 or above, you can access it remotely via the 💎 Remote SSH function on Nebula CC. For firmware versions V4.70 or below, please access SSH locally.

WhoYouNow

Thanks for the answer! I'm learn the problem deeper.
Can you tell me how the equipment reacts to changing the mac addresses of Apple devices?

Zyxel_Kay

Hi @WhoYouNow

For the switches, there is no difference between the physical real MAC address and the virtual MAC address.

When a MAC address dynamically changes, the mechanism we mentioned will age out the MAC address from the MAC table if there is no response for 5 minutes.