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Configuration Guide - Network Management and Monitoring

CloudEngine 12800 and 12800E V200R005C10

This document describes the configurations of Network Management and Monitoring, including SNMP, RMON, LLDP, NQA, Service Diagnosis, Mirroring, Packet Capture, sFlow, and NETCONF.
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Configuring Capturing for Packets Sent to the CPU

Configuring Capturing for Packets Sent to the CPU

Precaution

Pay attention to the following precautions when configuring packet capturing:

  • You can set the timeout period specified by time and the number of packets to be captured specified by number for a capture instance. If the timeout period expires or the specified number of packets are captured, the system stops capturing packets.

  • You can set packet capture parameters based on the number of packets on the interface. If a large number of packets are forwarded on an interface, set the time parameter to a small value and the number parameter to a large value. If a small number of packets are forwarded on an interface, set the time parameter to a large value and the number parameter to a small value.

  • The device supports a maximum of eight capture instances.

  • The device can capture packets on the Eth-Trunk interface but cannot capture packets on a specified Eth-Trunk member interface.

  • In a packet capturing instance, the packets on a maximum of four interfaces can be captured. If you delete any interface from the instance or an interface goes Down, the entire instance is deleted.
  • If the ACL and VLAN parameters as well as the specified interfaces in an instance you want to configure are the same as those in an existing instance, the device considers that this instance has been enabled.
  • The device can capture packets of various protocols sent to the CPU.

  • The device cannot capture packets on stack ports or physical ports of stack members.

Procedure

  1. Run capture-packet local-host [ interface { interface-type interface-number } &<1-4> ] [ acl { { acl-number | name acl-name } | ipv6 { acl6-number | name acl6-name } } | vlan vlan-id | inner-vlan inner-vlan-id ] * destination { terminal | file file-name } * [ time-out time | packet-num number | packet-len { length | total-packet } ] *

    The device is configured to capture packets sent to the CPU.

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Updated: 2019-04-20

Document ID: EDOC1100075344

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