Configuring The Mgc List - Avaya G250 Administration

Basic device configuration
Connection preservation preserves all types of bearer connections except BRI. PRI trunk
connections are preserved. Connection preservation is configured via the Avaya
Communication Manager. For details, see the Administrator's Guide for Avaya
Communication Manager, 555-233-506.
Modem dial-backup. This feature can be used to provide redundant WAN connectivity
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between a G250/G350 and its primary MGC using a serial modem. This connection uses a
virtual interface called the Dialer interface. This feature recognizes that even if the Avaya
G250 or G350 Media Gateway is configured for survivability via SLS or ELS, the best
solution is to maintain the gateway's connection with its primary MGC whenever possible.
For details on configuring a backup Dialer interface, see

Configuring the MGC list

The G250/G350 must be registered with an MGC in order to provide telephone service. Use the
set mgc list command to set the G250/G350's MGC. You can enter the IP addresses of up
to four MGCs with the set mgc list command. The first MGC on the list is the primary MGC.
The G250/G350 searches for the primary MGC first. If it cannot connect to the primary MGC, it
searches for the other MGCs on the list.
Note:
To register an S8500 or S8700 media server as the MGC, use the IP address of
Note:
the media server's Control-LAN card (CLAN) rather than the IP address of the
media server itself.
The following is an example of the set mgc list command:
G350-001(super)# set mgc list 132.236.73.2, 132.236.73.3,
132.236.73.4, 132.236.73.5
Done!
If the MGC with the IP address 132.236.73.2 is available, that MGC becomes the G250/G350's
MGC. If that server is not available, the G250/G350 searches for the next MGC on the list, and
so on.
To determine the result of the set mgc list command, use the show mgc command. This
command has the following output:
Registered — indicates whether or not the G250/G350 is registered with an MGC (YES or
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NO).
Active Controller — displays the IP address of the active MGC. If there is no active MGC
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(that is, if the set mgc list command failed to configure an MGC), this field displays
255.255.255.255.
H248 Link Status — indicates whether the communication link between the G250/G350
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and the MGC is up or down.
H248 Link Error Code — if there is a communication failure between the G250/G350 and
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the MGC, this field displays the error code.
62 Administration for the Avaya G250 and Avaya G350 Media Gateways
Modem dial backup on page 147.