2000-10 2009-07-13 Service Location Protocol Version 2 (SLPv2) Registrations Expert Review Erik Guttman See for the specification of SLPv2 and how it can be extended. New SLP Extensions with types in the range 2-65535 may be registered following review by a Designated Expert. Please submit new extension requests to iana&iana.org with "SVRLOC-Extension Request" in the subject field. 0x0001 Attribute Missing SAs or DAs which receive a SrvReg or SrvRqst which omits an attribute which is marked 'required' in the Service Template associated with the service type MAY send this extension to warn the message sender. 0x0002 Attribute List UAs may request and obtain attribute lists along with Service Replies. 0x0003 Vendor Opaque Vendors may attach specific extensions to SLP messages for their own purposes. 0x0004 Subscribe UAs request DAs inform them when services of a particular service type and scope appear or disappear. 0x0005 NotifyAt DAs inform SAs what service types and scopes to multicast notifications for, and which multicast groups to use. 0x0006 Mesh-enhancement DA mesh control messages are sent as extensions to DAAdvert messages between mesh-enhanced DAs. 0x4001 SLP Local Service Autoderegistration Extension This extension effects SrvReg messages sent from a local SA client to a SA server (as described by ). A process ID is included. The SA will deregister the service if the process ID is no longer valid. none available 0x4002 Select UAs use this extension in a SrvRqst to request DAs/SAs limit the maximum number of URL entries in the corresponding SrvRply. DAs/SAs use this extension in a SrvRply to inform UAs the total number of matching URL entries. 0x4003 Sort UAs use this extension in a SrvRqst to request DAs/SAs sort the URL entries in the corresponding SrvRply according to to the specified sort key list. 0x4004-0x7FFF Unassigned Matt Peterson mailto:matt&caldera.com James Kempf mailto:james.kempf&ericsson.com Erik Guttman mailto:erik&spybeam.org Weibin Zhao mailto:zwb&cs.columbia.edu