Multi cluster network the figure shows a multi

3) Multi cluster network
The figure shows a multi-cluster network,
monitored and controlled by the PNMSj through
LAN interface (IP network). Up to 192 remote
clusters (up to 10,000 NEs) can be connected
with PNMSj through LAN interface (IP network).
The remote clusters are also possible to
concentrate by using Management Interface Unit
(MIU) and Hybrid Converter (HYB CONV) in the
figure to the right.
Customer
IP
Network
PNMSj
Remote Cluster-A
RS-232C
Remote Cluster-B
Remote Cluster-X
LAN
M
M
M M
1
2
3
Network operation
Center
4) Mixed PDH, STM-1, radio equipment
PNMSj is designed that management of mixed
STM-1 and PDH radio equipment can be
performed under one PC (NMS). Ring
configuration is available only for the
PASOLINK
+
/PASOLINK Mx.
5) Parallel PNMS configuration
Two PNMSj can monitor and control PASOLINK
network (up to 5,000 NEs) simultaneously and
independently to provide fault redundancy
function. They are connected through Router, as
shown in the figure to the right. This
configuration is called Parallel PNMSj. “Parallel"
means that status change (ex. alarm and event
occurrence) of each NE is recognized in both
PNMS. Even if one PNMSj is down, the other
PNMSj can monitor and control NEs in the
network.
(The logging data, performance monitor data and
network configuration data are not synchronized
between the PNMSj-1 and PNMSj-2.)
: ROUTER
: PASOLINK/PASOLINK
+
MIU
H
Y
B
C
O
N
V
M
M
Remote Cluster-Y
Remote Cluster-Z
32
: Dedicated leased line / Digital Service Channel M M
MIU
: Management Interaface Unit
H
Y
B
C
O
N
V
: Hybrid Converter
PNMSj
PPP, RS485
19.2kbps,Async
or
10BASE-T(LAN)
LAN
PASOLINK + (STM-1)
PASOLINK(PDH)
PASOLINK(PDH)
PASOLINK(PDH)
: ROUTER
: PASOLINK(PDH)
: PASOLINK + (STM-1)
Network operation
Center
Network operation Center
Network Operation Center-1
PNMSj-1
PNMSj-2
Customer IP network
Regional Network Operation Center-2
: ROUTER
: PASOLINK/PASOLINK +

MTL-PL-020
Network Configurations
6) Hierarchical PNMSj Configuration
Central and Regional PNMSj can be configured
as shown in the figure to the right. Regional
PNMSj monitors and controls PASOLINKs (up to
10,000 NEs) in its region. Central PNMS
monitors and controls all PASOLINKs (up to
10,000 NEs) in all regions (up to 50 regions). It is
considered an alternative configuration of
“Parallel PNMSj “.
Each NE is monitored and controlled by both
Central and Regional PNMSj. It means that even
if Central PNMSj is down, each Regional PNMSj
can monitor and control NEs in its monitored and
controlled region.
In a similar way, if a regional PNMS is down, the
central PNMSj can monitor and control NEs
under the region where the regional PNMSj is
down.
(The logging data, performance monitor data and network
configuration data are not synchronized between the central
PNMSj and Regional PNMSj. Central PNMSj has some
restriction of the function.)
7) Higher-level Management Interface
In order to make NEC's PASOLINK family
equipment an integral part of a higher-level
management system, an optional SNMP
interface to higher-level management system is
provided with the PNMSj. The interface is based