PVP Maintenance Procedures
250-0800-06, Version A
85
D I T E C H N E T W O R K S
w w w . d i t e c h n e t w o r k s . c o m
8
PVP
Main
te
nan
ce
Packet Voice Processor Commands Manual
8.5 Card
Redundancy
Schemes
The Switch Control cards, Application Processing cards, and Media Processing
cards are assigned either working or protection roles depending upon their location
within the Packet Voice Processor shelf. The Switch Control card housed in shelf slot
number 1 has the working role. The Switch Control card housed in shelf slot number
2 has the protection role (refer to
for an illustration of Packet
Voice Processor shelf slots).
The Application Processing card housed in shelf slot number 8 has the working role.
The Application Processing card housed in shelf slot number 10 has the protection
for an illustration of PVP shelf slots).
The Media Processing cards housed in shelf slots 3, 5, 7, 8, 9, 10, 11, 12, and 13
have working roles. The Media Processing card housed in shelf slot 14 has the
protection role.
Note
Both Interface Processing cards have working roles. Redundancy is provided by LAG
(Link Aggregation Group) provisioning for these card types (see
for LAG command information).
8.5.1 Media Processing Card Failure
In the event of a Media Processing card failure, the Packet Voice Processor will
respond in stages as described in
.
Note
Only a single Media Processing card can be protected at a time.
Table 8-6 Media Processing Card Failure Examples
Stage
Description
1
First Example
:
The Media Processing card in slot #13 fails due to a mechanical or other error. This card
switches from active status to inactive status. The ACT LED on this card’s front panel will switch
to OFF from GREEN. Depending upon the specific failure type, the command line interface
(CLI) may also display an alarm for that failure type after either issuing the
ALARMS
command
or if autonomous messaging is enabled (
AUTOMSG
command).
In addition, the Packet Voice Processor shelf alarms (Critical and Major LED) will switch to RED
from OFF.
2
The protection Media Processing card housed in slot #14 will switch to active status and
perform the tasks previously performed by the failed card (see
). A
“protection active” alarm is raised when the protection Media Processing card switches to
active status.
Note
: A “protection active” alarm is raised whenever the protection Switch Control card or
protection Media Processing card becomes active. In addition, for the Switch Control card, an
alarm is raised for each domain. The following domains are possible for the Switch Control
card:
• System Control
• Signaling
• Internal Transport
For additional domain information, see
Содержание Packet Voice Processor
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