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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 NetStream Flow Aging

Configuring NetStream Flow Aging

Context

When a NetStream flow is aged out, the device uses a specified version of NetStream packets to export the flow statistics in the cache to the NSC.

NetStream flow aging modes include regular aging, byte-based aging, and forced aging. By default, the byte-based aging is enabled.

  • Regular aging

    • Active aging

      Active aging requires the device to periodically export statistics about the flows that persist for a long period. This aging mode is enabled on the device by default, and only the aging time needs to be configured.

    • Inactive aging

      Inactive aging clears unnecessary entries in the NetStream cache so that the system can fully leverage statistics entries. Inactive aging requires the device to export statistics about the flows that persist for a short period. Once adding packets to a flow stops, the device exports flow statistics to conserve memory space. This aging mode is enabled on the device by default, and only the aging time needs to be configured.

  • Forced aging

    Forced aging can be used when the latest statistics are needed, but the existing aging conditions have not been satisfied or some flows have failed to age out due to an anomaly. You can forcibly age out all the flows in the cache and export the flow statistics.

Procedure

  • Configure regular aging.

    Configure active aging.

    1. Run the system-view command to enter the system view.
    2. Run the netstream timeout ipv6 active active-interval command to set the active aging time of IPv6 flows.

      By default, the active aging time of IPv6 flows is 30 minutes.

    3. Run the commit command to commit the configuration.

    Configure inactive aging.

    1. Run the system-view command to enter the system view.
    2. Run the netstream timeout ipv6 inactive inactive-interval command to set the inactive time of IPv6 flows.

      By default, the inactive aging time of IPv6 flows is 30 seconds.

    3. Run the commit command to commit the configuration.
  • Configure forced aging.
    1. Run the reset netstream cache ipv6 slot slot-id [ chip chip-id ] command in the user view to forcibly age out all IPv6 flows on the card.

      NOTE:

      Only the CE12800E configured with ED-E, EG-E, and EGA-E series cards supports the chip chip-id parameter.

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Updated: 2019-04-20

Document ID: EDOC1100075344

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