Avaya G250 Maintenance Manual page 69

Table 23: General Link Recovery process (continued)
Process Description
sequence
3. If the gateway cannot reconnect with the original MGC, then it searches the
MGC list (in order) for alternate resources (list elements 2-4) that are above
the Transition Point (if set). These alternate resources can be:
1. S8300: 1-3 S8300s configured as Local Spare Processors (LSPs)
2. S8700/S8710: 1-3 C-LAN circuit packs within the primary server's
configuration
3. SLS: A built-in module providing limited call control functionality (G250
only)
The Total Search Timer continues running.
See Administering the MGC list
list and setting the Transition Point.
4. If the Primary Search Timer expires before the gateway can re-establish the link
to the alternate resources that are above the Transition Point in the MGC list,
then the gateway crosses the Transition Point and begins searching the other
resources in the list. The gateway makes only one connection attempt with any
resources below the Transition Point.
5. If the gateway cannot re-establish the link to any of the resources below the
Transition Point, then it starts over at the top of the MGC list and continues to
the end, making only one reconnection attempt to each element in the list. This
continues until the Total Search Timer expires.
6. If the gateway still cannot connect to any alternate resources and Total Search
Timer expires, the software raises a warning alarm. See
recovery
notification strategies.
The server's Link Loss Delay Timer should be the last timer to expire, meaning
that the server holds its call control information until all other means of
re-establishing the link have been exhausted.
Note: If the Link Loss Delay Timer expires but the gateway successfully
connects with an alternate resource, the system generates a warning alarm
anyway, even though the H.248 link is up.
7. When the Link Loss Delay Timer expires, Connection Preservation begins. See
Connection Preservation
Survivability (SLS) is enabled, SLS begins. See
(SLS)
on page 70 for more information about the server and gateway alarm
on page 75. On a G250 in which Standard Local
on page 87 for more information about SLS.
on page 74 for instructions on administering this
Standard Local Survivability
System resets
Maintenance during
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