NFD

Develop an integration test scenario for NCC strategy's ability to react to link failures

Topology

 /-----\
A       B
 \--C--/

Steps

1. setup RIB entries on hosts: C has a route toward B, A has two routes toward B and C
2. run ping server on B, run ping client on A
3. after 5s: fail link A-B
4. after 5s: recover link A-B
5. after 5s: fail link A-C
6. after 5s: recover link A-C
7. after 5s: stop ping client
8. analyze ping client logs, fail the test case if there is any loss, or RTT is over 100ms for any sequence number

Notes

• to inject a link failure: use iptables to drop UDP packets on the port numbers used by the tunnel; don't destroy face