Comtech EF Data NetVue Release 1.1 User Guide - Manual (Page 258)

0BOperational Considerations Revision 3
NetVue User Guide MN–NETVUE
B–2
B.1.2 Bandwidth considerations
Again, all networks are different, so we are considering the worst case scenario. In this case, many
distributed NetVue servers are configured to collect a large amount of statistical data (alarms and trend
information). This data must be distributed to peer NetVue servers.
A worst case consideration would be a condition where a large network would have the NetVue server
collecting about 10 Gigabytes per day in this large network example. About 20 Gigabytes of data must be
distributed to other servers in the cluster. This process requires a data rate of approximately 2 Mbps, per
day.
Therefore, the minimum data rate between the servers in the large network cluster is recommended to be
within the range of 1.5 to 2.0 Mbps.
B.1.3 Device management overhead considerations
This section describes the typical overhead used when managing remote devices.
As with any managed device, overhead is necessary when polling remote devices for management and
the collection of statistics. Because satellite bandwidth is costly, the overhead used must be kept to a
reasonable amount.
NetVue’s equipment drivers were developed to limit the amount of polling that occurs over the satellite
link, without making the system seem slow.
Estimated, typical statistics for management overhead with the NetVue management system are listed:
• Serial Device: 0.3 to 0.5 Kbps (0.8 Kbps aggregate) (e.g., CDM-600, LPOD, general RF Devices,
etc.)
• LAN Device: 2.0 to 2.5Kbps (5.0 Kbps aggregate) (e.g., CDM-625, LPOD, etc.)