Questions: Jumbo Frames Enabled But Some Paths Failing

• What is the MTU configured on each server's network interface?
• What is the MTU configured on each switch port and switch uplink in the path?
• Does every Layer 2 device in the path support and have jumbo frames enabled?
• What does ping -s 8972 -M do (Linux) or ping -f -l 8972 (Windows) show per hop?
• Which specific network segments or switches are causing the drops?
• Is the DF (Don't Fragment) bit set on the traffic?
• Are there any ICMP unreachable/fragmentation-needed messages being generated?
• What model/firmware are the switches in the path, and do they support 9000+ MTU?
• Is there a router (Layer 3 hop) in the path that may have a different MTU?