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Configuring Rate Limiting on User Traffic Based on DHCP Snooping Binding Tables
Context
After users go online on a DHCP network, user traffic is not rate limited by default. In this case, if the traffic of a user is extremely high, the limited network resources are occupied by the user, affecting resource usage of other DHCP users.
To solve this problem, you can configure rate limiting on user traffic based on DHCP snooping binding tables. The device then will discard extra traffic so that the input and output traffic is restricted within a reasonable range. After a DHCP user goes online, the device identifies it as an authorized user based on the DHCP snooping binding table and dynamically applies the configured traffic rate limiting policy for the user. This ensures that network resources can be effectively used.
- The configuration in the system view takes effect globally for DHCP users; the configuration in the VLAN view takes effect only for the DHCP users in the VLAN.
- If rate limiting on user traffic is configured both in the system view and VLAN view for the same DHCP user, the configuration in the VLAN view takes effect.
- The CE12800E does not support the function after having the ED-E, EG-E, and EGA-E series cards installed.