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encode_labeled_prefix

bgpkit_parser::models

Function encode_labeled_prefix 

Source 
pub fn encode_labeled_prefix(
    prefix: &LabeledNetworkPrefix,
    mode: LabeledNlriMode,
    add_path: bool,
    peer_max_labels: Option<u8>,
) -> Result<Vec<u8>, LabeledNlriEncodeError>
Expand description

Encode a labeled prefix for MP_REACH_NLRI per RFC 8277.

This function respects the encoding mode:

  • SingleLabel mode: Exactly one label, BoS=1
  • MultiLabel mode: All labels with proper BoS bits

§Arguments

  • prefix - The labeled prefix to encode
  • mode - The RFC 8277 encoding mode (SingleLabel or MultiLabel)
  • add_path - Whether ADD-PATH capability was negotiated (required for path_id encoding)
  • peer_max_labels - Optional peer-negotiated maximum labels

§Errors

Returns error if:

  • Label stack is empty
  • Total NLRI length exceeds 255 bits
  • SingleLabel mode with multiple labels
  • ADD-PATH not negotiated but path_id is present
  • Label count exceeds peer_max_labels