Amazon Technologies, Inc.

Andrei Tcarevskii

Srinivasan Ramabadran

Hardeep Singh

Ezequiel Lara Gomez

Damien Desmarets

Shanta Pavan Namburi

In networks, some communication links may be provided as part of a network underlay to reach outer networks/regions. Technologies are disclosed for monitoring/analyzing targeted networks using probe packets sent from outside of the targeted networks. The probe packets are configured to include an outer IP packet encapsulating an inner UDP packet, where the inner UDP packet indicates a source of the probe (e.g., an agent) as both the source and destination address. Time to Live (TTL) values for the inner and outer packets are controlled to propagate the packet through the network using the underlay to access the outer network/regions.

Active network monitoring

A monitoring solution allows for testing of forwarding states on network devices. In a particular example, an agent on a router A directs a probe packet to a first neighbor device. The first neighbor device reflects the probe back to the router A. The reflected probe packet undergoes a forwarding state lookup similar to other network traffic and is routed to a second neighbor network device. The second neighbor network device reflects the probe back to router A, which can then intercept the packet and redirect it to an agent on router A for verification whether the lookup was performed correctly.

Growing community of inventors

Dublin, Ireland

Andrei Tcarevskii