Editing IRCd (section)

=== Clustering ===
Large IRC networks consist of multiple servers for [[horizontal scaling]] purposes. There are several IRC protocol extensions for these purposes.<ref name=scale>Paul Mutton, ''IRC hacks'', [[O'Reilly Media]], 2004, {{ISBN|0-596-00687-X}}, pp. 371</ref>

==== IRCX ====
[[IRCX]] (Internet Relay Chat eXtensions) is an extension to the IRC protocol developed by Microsoft<br/>

==== P10 ====
The '''P10''' protocol is an extension to the [[Internet Relay Chat]] protocol for server to server communications developed by the Undernet Coder Committee to use in their ircu server software. It is similar in purpose to [[IRCX]] and EFnet TS5/TS6 protocols and implements nick and channel timestamping for handling nick collisions and netsplit channel riding, respectively. Other IRCd's that utilize this protocol extension include [[bIRCd|beware ircd]].<ref name=scale/><ref>[http://ircd.bircd.org/bewarep10.txt beware's P10 documentation]</ref><ref>[http://web.mit.edu/klmitch/Sipb/devel/src/ircu2.10.11/doc/p10.html ircu P10 documentation]</ref>

==== TS6 ====

The '''TS6''' protocol is an extension to the [[Internet Relay Chat]] protocol for server to server communications developed initially by the developers of ircd-ratbox. It has been extended by various IRC software and has the feature that proper implementations of TS6 can link to each other by using feature negotiation—even if features are disparate.