The following are snippets of Peering Policy Clauses found in the Peering Rules of the Road - A Brief Study of Peering Policies study.  Clauses were categorized and put into rough categories for comparison.

Here are the clauses we categorized as MD5 Peering Policy Clauses

Excerpts from Peering Polices

MD5

2.5 MD5 passwords are required for all BGP sessions. – AboveNet

All BGP sessions will be configured with an MD5 password of at least 15 characters length. – BBC

# WBS Connect requires an MD5 password for each BGP session. – wbsconnect

Must use BGP version 4 with BGP authentication keys – Charter