D-Link DGS-6600-48T Product Manual - Page 141

DGS-6604 m cpu-protect type cpu-protect type Use this command to configure the rate-limit of traffic destined to CPU by protocol type. cpu-protect type PROTOCOL-NAME pps RATE no cpu-protect type PROTOCOL-NAME Syntax Description PROTOCOL-NAME Specifies the protocol name (for example, bgp) to be configured. See the "Usage Guideline" for a list of protocols supported by most routers. RATE Specify the threshold. The unit is packets per second. The valid range is project dependent. When set to 0, all packets of the specified protocol are dropped. The max RATE is 2000. Default Command Mode Usage Guideline None Global configuration CPU must handle certain packets, such as routing protocols, Layer 2 protocols, and packets for management. If the traffic destined to CPU overloads, the CPU will spend much time processing unnecessary traffic, and the routing processes are impacted. To mitigate the impact, the user can use this command to control the threshold of individual protocol packets. When the no-form of this command is configured, the related counter will reset to zero. Supported Protocols that can be configured rate-limit: The following table lists the reference for the supported protocols for the cpuprotect type command. According to the purpose of packets destined to CPU, the router creates three virtual sub-interfaces to process the packets: • manage: The packets are destined to one of the router interfaces via the interactive access protocol, such as Telnet and SSH. • protocol: The packets are protocol control packets which can be identified by the router. • route: Others, packets traversing the router for routing that must be processed by the router CPU (e.g. software routing) before it can be routed without CPU's involvement. The classification of each protocol lists at the column of "Classification (subinterface)". CLI Reference Guide 131