71301X Practice Questions

The output from the show mgc command (issued on a G430/G450 Gateway CLI) can indicate whether the G430/G450 is operating as an Internet Friendly (Edge) Gateway or an Enterprise Gateway. An Internet Friendly (Edge) Gateway is a device that provides secure and reliable connectivity between endpoints on different networks, such as the public internet and a private enterprise network. An Enterprise Gateway is a device that provides connectivity between endpoints on the same network, such as a LAN or a WAN. The show mgc command displays information about the Media Gateway Controller (MGC), which is the entity that controls the media gateway functions of the G430/G450, such as call processing, routing, and signaling. The MGC can be an Avaya Communication Manager (CM) server or an Avaya Session Border Controller for Enterprise (ASBCE) server. The output from the show mgc command includes these fields:

• Management Link Mode: This field indicates how the G430/G450 communicates with the MGC for management purposes, such as configuration, monitoring, and troubleshooting. The possible values are Direct or Tunnelled. Direct means that the G430/G450 communicates with the MGC using a direct IP connection over TCP port 5022. Tunnelled means that the G430/G450 communicates with the MGC using a tunnel over TCP port 2944 and secured using TLS. This mode is used when the G430/G450 operates as an Internet Friendly (Edge) Gateway and communicates with ASBCE as the MG

  C.  

• H.248 Link Mode: This field indicates how the G430/G450 communicates with the MGC for media gateway control purposes, such as controlling media streams, allocating resources, and creating connections. The possible values areEGW or IF

  G.  

  EGW means that the G430/G450 communicates with the MGC using H.248 protocol over UDP port 2944. This mode is used when the G430/G450 operates as an Enterprise Gateway and communicates with CM as the MG

  C.  

  IFG means that the G430/G450 communicates with the MGC using H.248 protocol over TCP port 2944 and secured using TLS. This mode is used when the G430/G450 operates as an Internet Friendly (Edge) Gateway and communicates with ASBCE as the MG

  C.  

• H.248 Link Status: This field indicates whether the H.248 link between the G430/G450 and the MGC is up or down, and whether it is encrypted or not. The possible values are UP/Encrypted, UP/Unencrypted, DOWN/Encrypted, or DOWN/Unencrypted. UP means that the H.248 link is established and functional. DOWN means that the H.248 link is not established or not functional. Encrypted means that the H.248 link is secured using TLS encryption. Unencrypted means that the H.248 link is not secured using TLS encryption.

Therefore, to determine whether the G430/G450 is operating as an Internet Friendly (Edge) Gateway or an Enterprise Gateway, you can look at these two fields in the output from the show mgc command:

• If the H.248 Link Mode displays IFG, it means that the G430/G450 is operating as an Internet Friendly (Edge) Gateway and communicating with ASBCE as the MGC using H.248 over TCP port 2944 and secured using TLS.
• If the H.248 Link Status displays UP/Encrypted, it means that the G430/G450 is operating as an Internet Friendly (Edge) Gateway and communicating with ASBCE as the MGC using a secure and functional H.248 link.