[DISPATCH-1554] Router link state loses neighbors when 1k links are created quickly

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.10.0
• Component/s: Routing Engine
• Assignee: Unassigned
• Reporter: Charles E. Rolke
• Created: 21/Jan/20 21:32
• Updated: 22/Jan/20 15:28

Description

Four routers are connected in a linear network: A-B-C-D.

A proton cpp client test program https://github.com/ChugR/qpid-proton/blob/cr-link-address-generator/cpp/examples/qdr_moad_recv.cpp opens 1000 receivers on router B.

  qdr_moad_rcvr -b $INTB_normal -l 1024 -c 1000

The barrage of receiver creations takes about 0.3 seconds. The router logs show:

• within a few seconds all routers emit empty computed link cost values.
• 25 seconds later costs are stable again
• then costs are then propagated between A and B, and C and D only. A and B cannot see C and D, and vice versa
• 15 seconds later costs are stable again