Comparison of characteristics
| P2P Messaging System | Pastry/Scribe | JXTA's propagate pipe |
|
| Topology | Multi-ring collaborating with peer-to-peer network | Tree built on peer-to-peer network | Peer-to-peer |
| Group formation | Topic subscription | Topic subscription | Peer group membership, propagate pipe |
| Node roles | Peers, inner ring peers | Peers | Peers, rendezvous / router peers |
| Group messages traverse only group nodes | Yes | No | No |
| Heterogeneity of nodes considered | Yes | No | No |
| Adjustment to node failures | Activation of backup links and restoration of regular links | Local restoration of subscriptions | (Insufficient information available) |