Inter-server
Inter-server or interserver is a technical term used in network protocol design to intend an extension to the classic client-server model by having parts of a protocol which are only exchanged between the servers. In some fields the acronym S2S as in server-to-server is used to mean the same thing. Also the word inter-domain is often used to intend inter-server.
Inter-server extensions are often needed to address distribution requirements, making multicast a sought after feature in this scenario.
Protocols that have inter-server functions additionally to the regular client-server protocols include:
- Domain name system (DNS)
- Dynamic Host Configuration Protocol (DHCP)
- File eXchange Protocol (FXP)
- Inter-Asterisk eXchange (IAX)
- InterMUD
- Internet Relay Chat (IRC)
- Network News Transfer Protocol (NNTP)
- Protocol for SYnchronous Conferencing (PSYC)
- Session Initiation Protocol (SIP)
- Secure Internet Live Conferencing protocol (SILC)
- Extensible Messaging and Presence Protocol (XMPP)