search

DE-CIX / pbgp-parser

PCAP BGP Parser
Other
84 stars 21 forks source link

Support for extended NLRI encoding for BGP add-path #38

Open mengkoonlim opened 4 years ago

mengkoonlim commented 4 years ago

https://tools.ietf.org/html/rfc7911#page-3

If BGP addpath is enabled, the NLRI encoding has a 4 byte value prepended for each NLRI, to indicate the Path ID. 

             +--------------------------------+
              | Path Identifier (4 octets)     |
              +--------------------------------+
              | Length (1 octet)               |
              +--------------------------------+
              | Prefix (variable)              |
              +--------------------------------+

This resulted in wrong NLRI parsing by pbgpp

thanks

cmoeller-dx commented 4 years ago

Hello @mengkoonlim , we are currently working on this problem. Could you provide us with a pcap file containing this particular message for testing purposes?

It would be nice if the file contains a message like you mentioned in issue No. 37. (https://github.com/de-cix/pbgp-parser/issues/38) Thank you.

mengkoonlim commented 4 years ago

The attached pcap has message for BGP add-path NLRI path-iad and Prefix Length 0 mentioned in issue no.37 thanks! sample.pcap.gz