Network Bandwidth

Bandwidth between the eSight server and devices

Total bandwidth between eSight and devices = Device management bandwidth + Additional bandwidth for terminal upgrade + Additional bandwidth for network traffic + Additional bandwidth for servers

Recommended bandwidth: 50 Mbit/s

• Device management bandwidth (X indicates the total number of devices, including terminals and other box devices):
  • X < 2000, minimum bandwidth required: 2 Mbit/s
  • X > 2000, minimum bandwidth required: 2 Mbit/s + (X – 2000) x 0.8 kbit/s
• Additional bandwidth for terminal (IP phones and CPEs) upgrade (Y indicates the number of terminals):

  (Y/10) x 256 kbit/s

  NOTE:

  The planned bandwidth for each terminal upgrade is 256 kbit/s. In the formula, Y/10 indicates that 10% terminals are concurrently upgraded. eSight allows users to upgrade 100 terminals at the same time, requiring 25.6 Mbit/s.

• Additional bandwidth for network traffic:

  N x 400 bit/s

  NOTE:

  • In the formula, N indicates the number of flows and its unit is flow/s.
  • The bandwidth for a flow is calculated as follows: (1500/30) x 8 bit/s = 400 bit/s. Here, 1500 indicates that the average size of a NetStream packet is 1500 bytes, and 30 indicates that a NetStream packet has 30 flows on average.
  • Reference: The number of flows varies according to the service. For a scenario in which a 50 GB bandwidth is required for monitoring and the sampling ratio is 1000:1, for 10,000 to 30,000 flows, the bandwidth of 3.8 Mbit/s to 10 Mbit/s is required.
• Additional bandwidth for deploying the operating system for servers:

  15 Mbit/s

  NOTE:

  eSight allows users to load and deploy the operating system image through the ServiceCD. Deploying the operating system for each server requires 1.5 Mbit/s. eSight allows users to deploy the operating system for a maximum of 10 servers at the same time, requiring 15 Mbit/s (10 x 1.5 Mbit/s).

Bandwidth between the eSight server and web client

Bandwidth for communication between the eSight server and client = Bandwidth between a single eSight client and eSight server x Number of clients

The communication bandwidth between a single eSight client and eSight server must be at least 2 Mbit/s. It is recommended that the bandwidth be greater than 10 Mbit/s.

Bandwidth between the eSight server and OSS

≥ 100 Mbit/s

Bandwidth between the upper-layer and lower-layer NMSs of eSight

≥ 10 Mbit/s

Bandwidth between the active and standby servers in the HA system

≥ 100 Mbit/s