LDP Data Plane Convergence Benchmarking

1
LDP Data Plane Convergence Benchmarking

• Thomas Eriksson, TeliaSonera
• Scott Poretsky, Quarry
• Rajiv Papneja, Isocore

2
Introduction

• Service providers need fast convergence in their
  networks
• Standard for LDP data plane convergence
  benchmarking needed
• We have presented the terminology earlier and
  today present some methodology for discussion

3
Terminology

• No updates for this meeting
• Currently at rev -02
• New terms will be added if needed for methodology

4
Methodology

• DUTs ingress LSR, Core LSR and Egress LSR

5
Methodology

• Topology for single next hop FECs

6
Methodology

• Topology for multiple next hop FECs

7
Methodology

• Multiple next hop FECs might be found in two
  cases
• Two routers with parallel links
• One router having ECMP routing from itself to a
  number of other routers
• Test to be performed for both scenarios

8
Methodology

• Tests to be performed for both good and bad news
  (E.g. up/down FEC convergence events)
• It shall be possible to test for any routing
  protocol that provides FECs for LDP to bind
  labels. e.g. IGPs or IGPs with loop free
  alternates algorithm

9
Methodology

• Interesting FEC convergence events
• IGP metric change
• IGP LSP/LSA with remote topology change
• Lost IGP adjacency
• Lost LDP session
• Label withdrawal
• Interface shutdown (local/remote)
• Fiber pull (local/remote)
• Removed IP address

10
Methodology

• Next steps
• Detailed test cases
• Considerations for the tests
• Write all this up and submit
• Comments?