Cisco SRX 透明模式

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Transparent Mode
  In transparent mode, the SRX Sers device filters packets that traverse the device without modifying any of the source or destination information in the IP packet headers. Transparent mode is useful for protecting servers that mainly receive traffic from untrusted sources because there is no need to reconfigure the IP settings of routers or protected servers.
  Table 44 lists the transparent mode features that are supported on SRX Sers devices. For more information about transparent mode features, see the Junos OS Layer 2 Bridging and Switching Configuration Guide for Security Devices.
  Table 44: Transparent Mode Support
  Feature SRX100
  SRX210
  SRX240 SRX650 SRX3400
  SRX3600
  SRX5600
  SRX5800 J Sers
  Bridge domain and transparent mode
  No
  No
  Yes
  No
  Chassis clusters (active/backup and active/active)
  No
  No
  Yes
  No
  Class of service
  No
  No
  Yes
  No