What is BWPing ?
is a tool to measure bandwidth and response times between two hosts
using Internet Control Message Protocol (ICMP) echo request/echo reply mechanism.
It does not require any special software on the remote host. The only requirement
is the ability to respond on ICMP echo request messages. BWPing supports both IPv4
and IPv6 networks.
Although BWPing does not require any special software on the remote host (only the
ability to respond on ICMP echo request messages), there are some special requirements
to network infrastructure, local and remote host performance:
- There should be no ICMP echo request/reply filtering on the network; this includes
QoS mechanisms (which often affects ICMP) at any point in the testing path.
- Local host should have enough CPU resources to send ICMP echo request messages with
given rate, and remote host should quickly respond on these messages and should have no
ICMP bandwidth limiting turned on.
If some of these requirements are not satisfied then the measurement results will be
inadequate or fail completely. In general, for testing bandwidth where QoS is implemented,
always test with traffic that matches the QoS class to be tested.