Shreds

UDP Packet Size Design

Following Solana's approach, shreds are designed to fit within 1228 bytes(derived from IPv6 minimum MTU of 1280 bytes minus 48 bytes for IPv6/UDP headers and 4 bytes for nonce).

Total message size: 1225 bytes

• Metadata overhead: 276 bytes (headers, commitment, len, witness, signature)
• Shred payload: 952 bytes (erasure-coded transaction data)
• Witness: 160 bytes (assumes 32 attesters: log₂(32) = 5 Merkle proof entries × 32 bytes)