The Virtual Network blade in the Azure portal has been enhanced to troubleshoot connectivity and performance issues or continually monitor your network endpoints from virtual machines (VMs) in a virtual network. You can:
Check for connectivity between source (VM) and destination (VM, URI, FQDN, IP address).
Identify configuration issues that are affecting reachability.
Provide hop-by-hop paths from source to destination; hop-by-hop latency; minimum, maximum, and average latency between source and destination; and a topology (graphical) view from source to destination.