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How Many IP Addresses at Serving Gateway for GTP Protocol

  • This topic has 0 replies, 1 voice, and was last updated 10 months ago by Deni Yulianti, MSc.
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    Deni Yulianti, MSc
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    Hello, I am Deni Yulianti. I have a doubt. How many IP addresses that are located at Serving Gateway?
    Because in GTP version 2 protocol for a message “create session request” from MME to SGW, on pcap, I have seen it will be established 3 tunnels namely, S11 (MME-SGW) for control plane and S5 (SGW-PGW) for user plane and control plane. However, the IP address of SGW is totally different with original SGW. It happens also for a message “create session response”, it will be established 3 tunnels as well. Nevertheless, S5 (SGW-PGW) for both user plane and control plane use different IP address with original IP at SGW. Next, S1-U (SGW-eNodeB) for user plane, basically the IP address is belong to which node SGW or eNodeB?

    Please help me out. My email address is deniyulianti@gmail.com. Thanks in advance.

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