Considerations to connect MGC to a data network

Last Updated : Jan 05, 2021 |
Prolog information
Metadata
Keywords:
Media Gateway Controller (MGC) has the following four network connectors on the faceplate:
  • 1E, which is the ELAN port
  • 2T, which is the TLAN port
  • CE
  • CT
Consider the following to connect MGC to a data network:
  • Connect only the 1E and 2T connectors to a layer 2 switch to support the Device Adapter environment. Do not connect the CE and CT connectors.
  • On System Manager, administer the following four IP addresses to configure the MGC managed element:
    • ELAN IP address
      This address is internally bound to the 1E (ELAN) port. The MGC loadware uses this address.
    • TLAN IP address
      This address is internally bound to the 2T (TLAN) port. The MGC loadware uses this address to communicate with the DSP daughterboards.
    • DSP DB1 IP address
      This address is internally bound to the 2T (TLAN) port. The DSP DB1 VoIP media streams use this address.
    • DSP DB2 IP address
      This address is internally bound to the 2T (TLAN) port. The DSP DB2 VoIP media streams use this address.
  • The TLAN, DSP DB1, and DSP DB2 IP addresses must be on the same subnet, which is the TLAN subnet.
  • The ELAN IP address is on an ELAN subnet.
  • Connect the 1E (ELAN) port to a Layer 2 switch of the ELAN subnet.
  • Connect the 2T (TLAN) port to a Layer 2 switch of the TLAN subnet.
  • Unlike the CS 1000 environment, in the Device Adapter environment, separation of the ELAN subnet from the TLAN subnet is not mandatory. The ELAN and TLAN subnets can be the same subnet and you can connect the 1E and 2T ports to the same layer 2 switch.
  • For network implementation, ensure the following:
    • Connectivity between the MGC ELAN subnet and the Device Adapter Security Module subnet.
    • Connectivity between the MGC TLAN subnet and other media termination points, such as media sources and sinks, in the solution.
      The one-way network delay for both ELAN (signaling) connections and TLAN (media) connections should be below 50 milliseconds (100 milliseconds RTT).
  • Administration of any additional IP routes on the MGC in the Device Adapter environment is not required.
  • Redundant data connectivity, that is, redundant wiring and layer 2 switches for each ELAN and TLAN ports is supported by using the E and T networking connectors on the MGC chassis. For more information, see the CS 1000 documentation.