H3C supervlan optimized training process

10 years to sharpen a sword, give back to the Internet, life does not bring, death does not take away. We don't produce technology, just Internet porters.

-Foshan Xiaoxi

In 2012, supervlan introduced our network, but it has not been well optimized. The switch often lost its temper and jammed.

Supervlan principle, too much Internet. I should have written something different.

Supervlan advantages:

The waste of the number of A.IP is reduced (in the past, subnetting, putting it on different vif interfaces, ARP spoofing, etc., means that the IP has more broadcast numbers, network numbers, and more gateways IP).

b. Different sub vlan can be isolated.

Supervlan weakness:

a. It is because too many subvlan exchanges require the use of ARP agents.

Question: the supervlan technology used by H3C S5800/S5820X leads to high CPU utilization?

Treatment method:

The utilization of 1.ARP process is high, so we need to organize and optimize the time of ARP timer aging. I set it to 24hour

After optimization:

two。 Adjust from the network architecture.

a. Use multiple supervlan primary VLAN (do not bind all network segments to one primary supervlan).

b. Lower part of the supervlan to other devices.

Status quo:

After optimization: