Cisco Systems OL-11291-01 Manual De Usuario

For more detailed information about the statistics displayed in the FTP Historical Statistics window, see 
the “FTP Historical Statistics Window” topic in the online help.

In an IP network there are two types of measurements that you can take:

IP Echo—Measures the total round-trip latency from the source to the target device. The SA Agent 
feature in the source router issues an Internet Control Message Protocol (ICMP) ping to the target 
device and extracts the latency data from the reply.

See 

 for more information.

IP Path Echo—Measures the total round-trip latency as well as the incremental latency for each hop 
in all paths between the source router and the target device. Path Echo is available only for the IP 
protocol. 

The SA Agent feature first issues a traceroute command to determine the path through the network 
from the specified source to the specified target device. 

The data returned from the traceroute command contains the host name or IP address of each of the 
routers in the path. SA Agent then issues ICMP pings to each of the routers listed in the traceroute 
data.

The ICMP ping returns statistics regarding the latency, availability, and errors between the specified 
source and each of the routers.

See 

 for more information.