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Clarify Bolt 7 intro #760

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cdecker merged 2 commits into from
May 11, 2020
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Clarify Bolt 7 intro #760

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ba0040b
Bolt #7: Update introduction text
jnewbery Mar 24, 2020
a523085
Bolt #7: Maintain node discovery/channel discovery ordering
jnewbery Mar 24, 2020
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22 changes: 12 additions & 10 deletions 07-routing-gossip.md
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Expand Up @@ -4,19 +4,21 @@ This specification describes simple node discovery, channel discovery, and chann

Node and channel discovery serve two different purposes:

- Channel discovery allows the creation and maintenance of a local view of the network's topology, so that a node can discover routes to desired destinations.
- Node discovery allows nodes to broadcast their ID, host, and port, so that other nodes can open connections and establish payment channels with them.
- Channel discovery allows the creation and maintenance of a local view of the network's topology, so that a node can discover routes to desired destinations.

To support channel and node discovery, three *gossip messages* are supported:

To support channel discovery, three *gossip messages* are supported. Peers in the network exchange
`channel_announcement` messages containing information regarding new
channels between the two nodes. They can also exchange `channel_update`
messages, which update information about a channel. There can only be
one valid `channel_announcement` for any channel, but at least two
`channel_update` messages are expected.
- For node discovery, peers exchange `node_announcement`
messages, which supply additional information about the nodes. There may be
multiple `node_announcement` messages, in order to update the node information.

To support node discovery, peers exchange `node_announcement`
messages, which supply additional information about the nodes. There may be
multiple `node_announcement` messages, in order to update the node information.
- For channel discovery, peers in the network exchange
`channel_announcement` messages containing information regarding new
channels between the two nodes. They can also exchange `channel_update`
messages, which update information about a channel. There can only be
one valid `channel_announcement` for any channel, but at least two
`channel_update` messages are expected.

# Table of Contents

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