D-Link DGS-6600-48T Product Manual - Page 144
cpu-protect sub-interface, Usage Guideline
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DGS-6604 m cpu-protect sub-interface cpu-protect sub-interface Use this command to configure the rate-limit for traffic destined to CPU by subinterface type. cpu-protect sub-interface { manage | protocol | route } pps RATE no cpu-protect sub-interface { manage | protocol | route } Syntax Description 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 sub-interface type will be dropped. The max RATE is 2000 Default Command Mode Usage Guideline Example none Global Configuration The reasons of packets are destined to CPU can be classified into three groups: manage, protocol and route. The sub-interface is a logical interface, which handles the CPU received packets by different groups. Generally speaking, the protocol packets should have higher priority to make sure the functions work normally. CPU usually does not involve in the routing packets. In few cases, such as leaning new IP address or default route is not specified, some packets will be sent to CPU for software routing. The user can use this command to limit the rate of routed packets to avoid CPU spending too much time for routing packets. The classification of each protocol type lists at Table 1. When the no-form of this command is configured, the related counter will reset to zero. The following example shows how to set rate limit of manage packet group, and set threshold to 1000 packets per seconds. Switch(config)# cpu-protect sub-interface manage pps 1000 Switch# The following example shows how to remove rate-lilmit of management traffic. Switch(config)# no cpu-protect sub-interface manage Switch# Verifying the settings by show cpu-protect sub-interface command. CLI Reference Guide 134
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