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NE40E V800R010C00 Feature Description - NAT and IPv6 Transition 01

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CGN User Source Tracing Solution

CGN User Source Tracing Solution

CGN address source tracing supports user logs and flow logs. User logs are recommended for an advantage of saving the space. RADIUS source tracing is recommended for distributed CGN deployment. Syslog based on user is recommended for centralized CGN deployment.

  • RADIUS Source Tracing

    RADIUS tracing is applicable only to scenarios where a CGN board is inserted to a BRAS and ports are pre-allocated.

  • Syslog Source Tracing

    Syslog Source Tracing is applicable to both distributed CGN deployment and centralized CGN deployment.

    Table 2-3  Syslog Source Tracing
    Port Allocation Mode Syslog based on user Syslog based on NAT session
    Port Range mode One log for each user (with same source IP) One log for each NAT session
    Usually used for ports used by services can be estimated well, and need low pressure on log server Usually used for ports used by services can be estimated well, and accurate source tracing
    Semi-Dynamic mode One log for each user (with same source IP) for the first time of port allocation, and one more log for each time of expansion of the port allocation. One log for each NAT session
    Usually used for ports used by services cannot be estimated well or change a lot, needing low pressure on log server as well Usually used for ports used by services cannot be estimated well or change a lot, needing accurate source tracing as well
    Port Dynamic mode Not supported One log for each NAT session
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Updated: 2018-07-04

Document ID: EDOC1100027155

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