Arista BFD related TOIs

• 4.23*
• HW BFD
• https://eos.arista.com/eos-4-23-1f/hardware-accelerated-bfd-transmit/
• 4.22*
• BFD C-bit
• https://eos.arista.com/eos-4-22-1f/bfd-control-plane-independent-interoperability/
• BFD Authentication
• https://eos.arista.com/eos-4-22-0f/bfd-authentication/
• 4.20*
• BFD SSO:
• https://eos.arista.com/eos-4-18-2f/bfd-sso/
• 4.18.2F, starting with Arad Modular
• 4.20.5: Add Jericho
• BFD for static routes
• Gated
• https://eos.arista.com/eos-4-20-1f/bfd-for-static-routes/
• 4.17*
• BFD Enhancement:
• https://eos.arista.com/eos-4-17-0f/bfd-enchancements/
• BFD under VRF
• OSPFv3 BFD:
• https://eos.arista.com/eos-4-17-0f/ospfv3-bfd
• 4.15*
• ISIS BFD
• https://eos.arista.com/eos-4-15-2f/isis-bfd
• BFD NSX Monitoring:
• https://eos.arista.com/eos-4-15-0f/nsx-sn-health-monitoring/