Control Plane Protection - Lenovo CN4093 Application Manual

10gb converged scalable switch
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Control Plane Protection

206
CN4093 Application Guide for N/OS 8.3
Control plane receives packets that are required for the internal protocol state
machines. This type of traffic is usually received at low rate. However, in some
situations such as DOS attacks, the switch may receive this traffic at a high rate. If
the control plane protocols are unable to process the high rate of traffic, the switch
may become unstable.
The control plane receives packets that are channeled through protocol-specific
packet queues. Multiple protocols can be channeled through a common packet
queue. However, one protocol cannot be channeled through multiple packet
queues. These packet queues are applicable only to the packets received by the
software and does not impact the regular switching or routing traffic. Packet queue
with a higher number has higher priority.
You can configure the bandwidth for each packet queue. Protocols that share a
packet queue will also share the bandwidth.
The following commands configure the control plane protection (CoPP) feature:
Configure a queue for a protocol:
CN 4093(config)# qos protocol-packet-control packet-queue-map <0-47>
<protocol>
Set the bandwidth for the queue, in packets per second:
CN 4093(config)# qos protocol-packet-control rate-limit-packet-queue
<0-47> <1-10000>

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