通信设备提供商面临市场和成本的双重压力。
The communications equipment provider faces double pressure of the market and cost.
在内部和外部网络间进行安全和无缝漫游，在双重和三重隧道间切换，以及保护归属代理和移动节点间的通信。
Secure and seamless roaming between internal and external networks, switching between double and triple tunnel, and protecting communication between home agent and mobile node.
在内部和外部网络间进行安全和无缝漫游，在双重和三重隧道间切换，以及保护归属代理和移动节点间的通信。
Secure and seamless roaming between internal and external networks, switching between double and triple tunnel, and protecting communication between home agent and mobile phone.
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