Bandwidth requirements
Bandwidth requirements for collocated NFM-P installations
The following table lists the bandwidth requirements for the connections between the components of an NFM-P collocated installation. It is a good practice to measure the bandwidth utilization between the various components to determine a suitable bandwidth. There are a number of factors that could require an increase above our bandwidth utilization recommendations, including: GUI activity, XML-API activity, network events, number of network elements being managed.
Table 4-1: NFM-P collocated server/database bandwidth requirements
|
Available bandwidth required from primary NFM-P server/database station |
Recommended bandwidth: excluding statistics bandwidth requirements |
|---|---|
|
NFM-P client (GUI) |
1 Mbps |
|
XML API client (The bandwidth will depend on the XML-API application) |
1 Mbps |
|
Between primary and standby NFM-P server/database station NOTE: When network element database backup synchronization is enabled, the bandwidth requirement between the NFM-P servers will vary significantly depending on the size of the network element backup file sizes. |
5-10 Mbps (sustained) 16-26 Mbps (during re-instantiation or database backup synchronization) |
Bandwidth requirements for distributed NFM-P installations
The following tables list the requirements for the connections between the components of an NFM-P distributed installation. It is a good practice to measure the bandwidth utilization between the various components to determine a suitable bandwidth. There are a number of factors that could require an increase above our bandwidth utilization recommendations – including: GUI activity, XML-API activity, network events, number of network elements being managed.
Table 4-2: NFM-P distributed server/database bandwidth requirements
|
Available bandwidth requirements for NFM-P |
Recommended bandwidth: excluding statistics bandwidth requirements |
|---|---|
|
NFM-P server to an NFM-P database NOTE: This depends on GUI changes and lists, # of changes occurring in the network, and network objects managed. |
5 to 10 Mbps (3 Mbps minimum) |
|
NFM-P server to an NFM-P client |
1 Mbps |
|
NFM-P server to an XML API client (The bandwidth will depend on the XML-API application) |
1 Mbps |
|
Between a primary and a standby NFM-P server NOTE: When network element database backup synchronization is enabled, the bandwidth requirement between the NFM-P servers will vary significantly depending on the size of the network element backup file sizes. |
1 Mbps |
|
NFM-P server to an NFM-P auxiliary statistics collector |
1 Mbps |
|
Between primary and standby NFM-P databases NOTE: The higher bandwidth is required to handle re-instantiation and is also required immediately after a database backup when database backup synchronization is enabled. |
6 Mbps (sustained) 15-25 Mbps (during re-instantiation or database backup synchronization) 3 Mbps (minimum) |
Table 4-3: Additional bandwidth requirements for file accounting STM results collection
|
Bandwidth requirements for installations collecting file accounting STM results using the logToFile method only |
Increased bandwidth per 50 000 file accounting STM records |
|---|---|
|
NFM-P server to an XML API client if using registerLogToFile NOTE: a higher bandwidth may be desirable |
3.5 Mbps |
|
NFM-P server to NFM-P database station |
1.5 Mbps |
|
Between the NFM-P database stations – required for sufficient bandwidth for database re-instantiations NOTE: The higher bandwidth is required to handle re-instantiation during STM collection |
2 Mbps (sustained) 12 Mbps (during re-instantiation or database backup synchronization) |
Additional bandwidth requirements for NFM-P statistics collection
The size of the network and the number of statistics that are collected will impact the recommended bandwidth. The following tables should be used to determine how much additional bandwidth will be required between the NFM-P stations when statistics collection is added to the system. The collecting server, in the tables below, would be either the NFM-P auxiliary statistics collector or, in the absence of the NFM-P auxiliary statistics collector, the NFM-P server. The additional bandwidth requirements are per 200 000 collected records per interval. The bandwidths of connections not listed do not change dramatically with the addition of statistics.
The registerLogToFile method of retrieving statistics can be compressed or uncompressed. Using the compressed option requires additional CPU requirements on the station that is collecting the statistics (either NFM-P server or NFM-P auxiliary statistics collector). In this case, the bandwidth required will be reduced.
Table 4-4: Additional bandwidth requirements for accounting statistics collection
|
Record storage location |
Bandwidth between collecting server and NFM-P database |
Bandwidth between collecting server and NSP auxiliary database |
Bandwidth between NFM-P databases |
Bandwidth between NSP auxiliary database clusters |
Bandwidth between NFM-P databases during re-instantiation |
Bandwidth between collecting server and XML-API client |
|---|---|---|---|---|---|---|
|
NFM-P database |
2.2 Mbps |
N/A |
3.2 Mbps |
N/A |
18 Mbps |
N/A |
|
NSP auxiliary database |
N/A |
2.2 Mbps |
N/A |
0.8 Mbps per NSP auxiliary database node |
N/A |
N/A |
|
logToFile (NFM-P server or NFM-P auxiliary statistics collector) |
N/A |
N/A |
N/A |
N/A |
N/A |
3.5 Mbps |
|
findToFile (NFM-P server) |
N/A |
N/A |
N/A |
N/A |
N/A |
3.5 Mbps |
Table 4-5: Additional bandwidth requirements for application assurance accounting statistics collection
|
Record storage location |
Bandwidth between collecting server and NFM-P database |
Bandwidth between collecting server and NSP auxiliary database |
Bandwidth between NFM-P databases |
Bandwidth between NSP auxiliary database clusters |
Bandwidth between NFM-P databases during re-instantiation |
Bandwidth between collecting server and XML-API client |
|---|---|---|---|---|---|---|
|
NFM-P database |
3.1 Mbps |
N/A |
4.2 Mbps |
N/A |
20 Mbps |
N/A |
|
NSP auxiliary database |
N/A |
3.1 Mbps |
N/A |
0.8 Mbps per NSP auxiliary database node |
N/A |
N/A |
|
logToFile (NFM-P server or NFM-P auxiliary statistics collector) |
N/A |
N/A |
N/A |
N/A |
N/A |
4.6 Mbps |
Table 4-6: Additional bandwidth requirements for performance statistics collection
|
Record storage location |
Bandwidth between collecting server and NFM-P database |
Bandwidth between collecting server and NSP auxiliary database |
Bandwidth between NFM-P databases |
Bandwidth between NSP auxiliary database clusters |
Bandwidth between NFM-P databases during re-instantiation |
Bandwidth between collecting server and XML-API client |
|---|---|---|---|---|---|---|
|
NFM-P database |
5.4 Mbps |
N/A |
14.4 Mbps |
N/A |
72 Mbps |
N/A |
|
NSP auxiliary database |
5.4 Mbps |
5.4 Mbps |
14.4 Mbps |
0.8 Mbps per NSP auxiliary database node |
72 Mbps |
N/A |
|
logToFile (NFM-P server or NFM-P auxiliary statistics collector) |
N/A |
N/A |
N/A |
N/A |
N/A |
3.5 Mbps |
|
findToFile (NFM-P server) |
N/A |
N/A |
N/A |
N/A |
N/A |
3.5 Mbps |
When an NFM-P auxiliary statistics collector is installed to collect statistics using the NFM-P database, the bandwidth requirements between two geographic locations will need to reflect the state where an NFM-P auxiliary statistics collector in geographic location A may send information to the active NFM-P server in geographic location B which will, in turn, send information back to the NFM-P database in geographic location A. For this reason, the bandwidth between geographic location A and B must be the sum of the bandwidth requirements between the NFM-P auxiliary statistics collector to NFM-P server and NFM-P server to NFM-P database. It is also a best practice to ensure that the NFM-P auxiliary statistics collector, NFM-P server, and NFM-P database are all collocated in the same geographic site.
NSP auxiliary database
When an NSP auxiliary database is part of an NFM-P deployment, there are a number of bandwidth requirements listed below. Any bandwidths not listed are not impacted significantly by the use of the NSP auxiliary database for statistics collection.
When the auxiliary database cluster is deployed with a minimum of three nodes, the NSP auxiliary database server requires a minimum of two network interfaces; one for communication to the NFM-P management complex and one for internal data communication between each of the NSP auxiliary database servers in the cluster. The interface for internal data communication needs to be dedicated with a minimum interface speed of 1Gbps and part of a private network.
Table 4-7: Additional bandwidth requirements for NSP auxiliary database
|
Bandwidth requirements for installations with NSP auxiliary database |
Bandwidth usage characterization |
|---|---|
|
NFM-P auxiliary statistics collector to NSP auxiliary database cluster |
Higher bandwidth to write statistics data into the NSP auxiliary database cluster |
|
NSP analytics server to NSP auxiliary database cluster NOTE: a higher bandwidth may be desirable |
Higher bandwidth to generate reports based upon raw and aggregated data |
|
NSP auxiliary database node to NSP auxiliary database node (intra-cluster) |
High — must use a dedicated, minimum 1Gbps interface |
|
NSP auxiliary database to NSP auxiliary database (redundant cluster) |
High — up to 500Mb |