Avaya S8500 Job Aid page 8

Job Aid: Manual Backup Servers for S8500 or S8700 Media Servers—R2.0 or later
Using the MBS
NOTE:
All translation changes to the MBS while the MBS was in control will be lost and must be
re-entered on the active primary media server(s) at this time.
6
If the customer has LSPs, reset them.
7
For the now active primary media server(s) to establish control of the LSPs, the LSPs must be
reset.
If the network becomes fragmented
Network fragmentation means both the primary media server(s) and MBS may be made active when
WAN connectivity to the far-end port networks is severed.
NOTE:
When the MBS is activated, it cannot control a PN that the primary media server(s) may
be controlling. Also, once the network problem is resolved, the MBS and the primary
media server(s) may attempt to control the same PN, resulting in unexpected service
disruptions.
You want to make sure that the network temporarily stays fragmented by physically
disconnecting the appropriate cables.
CAUTION:
To avoid unexpected service disruptions, you must physically isolate the portion of the
network fragmented from the main control network. This is to avoid situations where the
source of the network failure is outside the control of the affected customer, implying that
the repair of such a network may happen without the customer's knowledge.
On the primary media server(s) (active server if S8700 or S8710):
1
Busy out the CSS port network connectivity (PNC) fiber connections to the remote port networks.
If a duplicated bearer network, busy out both the active and standby expansion interface (EI)
circuit packs and the switch node interface (SNI) circuit packs.
This action prevents accidental EI-EAL fallback from taking control of the PNs if the PNC fiber
connectivity is restored before WAN connectivity or if PNC fiber connectivity is never lost.
NOTE:
With ATM-PNC, switched virtual circuit (SVC) connectivity cannot be reliably
severed by busying out the fiber. But you can disconnect the fiber connecting the two
segments over the WAN, that is the ATM switch/blade 1 to ATM switch/blade 2.
2
Connect to the services port (Eth1) on the back of the primary media server(s) (active if S8700 or
S8710).
3
Log into a SAT session.
4
Type busyout board UUCSS
(cabinet, carrier, slot). Repeat for each EI circuit pack.
8
03-300154
and press Enter, where UUCSS
Manual Backup Servers for S8500 or S8700 Media Servers
is the location of the circuit pack
Issue 2 June 2004