Network Deployment (Distributed operating systems), v8.0 > Administer applications and their environment > Administer Session Initiation Protocol (SIP) applications > Administer SIP applications > Configure the SIP container
Use DNS procedures to locate SIP servers
The Session Initiation Protocol (SIP) can use Domain Name Server (DNS) procedures for a client to resolve a SIP Uniform Resource Identifier (URI).
WAS provides support for the RFC 3263 standard. This allows a SIP URI to be resolved through DNS into the IP address, port, and transport protocol of the next hop to contact.
SIP does not support use of DNS procedures for a server to send a response to a back-up client if the primary client fails.
Complete these steps to configure WAS to support the RFC 3263 standard.
Procedure
- Start WAS.
- From the administrative console, expand Servers, and click Application servers > serverName.
- Under General Properties, check the Enable locating SIP servers using DNS NAPTR records checkbox, then fill in the Primary DNS server name and Secondary DNS server name fields.
- Click Apply to save your changes.
- Restart WAS.
What to do next
Configure your DNS server in order for RFC 3263 support to work for the SIP container. The following example is a BIND db file for configuring RFC 3263 support on a DNS server.
; Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC") ; Copyright (C) 2001 Internet Software Consortium. ; ; Permission to use, copy, modify, and distribute this software for any ; purpose with or without fee is hereby granted, provided that the above ; copyright notice and this permission notice appear in all copies. ; ; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH ; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY ; AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, ; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM ; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE ; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR ; PERFORMANCE OF THIS SOFTWARE. ; $Id: include.db,v 1.2.206.1 2004/03/06 10:22:13 marka Exp $ ; Test $INCLUDE current domain name and origin semantics example.com. 43200 IN SOA ns.example.com. email.example.com. ( 2003032001 10800 3600 604800 86400 ) ; example.com. 43200 IN NS ns.example.com. ; ns.example.com. 43200 IN A 10.0.0.20 sipserver1.example.com. 43200 IN A 10.0.0.21 sipserver2.example.com. 43200 IN A 10.0.0.22 sipserver3.example.com. 43200 IN A 10.0.0.23 ; router.example.com. 43200 IN CNAME sipserver3 ; sipserver1.example.com. 43200 IN AAAA fec0:0:0:0:0:0:0:abcd sipserver2.example.com. 43200 IN AAAA fec0:0:0:0:0:0:0:abba ; _sip._udp.example.com. 43200 IN SRV 2 0 5060 sipserver1.example.com. _sip._udp.example.com. 43200 IN SRV 2 0 5060 sipserver2.example.com. _sip._tcp.example.com. 43200 IN SRV 1 4 5060 sipserver1.example.com. _sip._tcp.example.com. 43200 IN SRV 1 2 5060 sipserver2.example.com. _sips._tcp.example.com. 43200 IN SRV 0 1 5061 sipserver1.example.com. _sips._tcp.example.com. 43200 IN SRV 0 0 5061 sipserver2.example.com. ; example.com. 43200 IN NAPTR 0 0 "s" "SIPS+D2T" "" _sips._tcp.example.com. example.com. 43200 IN NAPTR 1 0 "s" "SIP+D2T" "" _sip._tcp.example.com. example.com. 43200 IN NAPTR 2 0 "s" "SIP+D2U" "" _sip._udp.example.com.
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