SIP in higher education

[Richard Machida <>]

For all willing to help test my implementation. I seem to be having a
problem with dns in one of our domains. The same SRV  records were put
in each domain as shown below. The first one doesn't seem to work and
the second works fine. The proxy never sees calls to the alaska.edu
domain. Is there a requirement that the entry be in the same domain?

Also is "0" valid for priority and weight in the SRV record?

Richard

[root@sipproxy1
 root]# dig -t SRV _sip._udp.alaska.edu

; <<>> DiG 9.2.3 <<>> -t SRV _sip._udp.alaska.edu
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37162
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1

;; QUESTION SECTION:
;_sip._udp.alaska.edu.          IN      SRV

;; ANSWER SECTION:
_sip._udp.alaska.edu.   3600    IN      SRV     0 0 5600
sipproxy1.uaf.edu.

;; AUTHORITY SECTION:
alaska.edu.             2148    IN      NS      uans-f.alaska.edu.
alaska.edu.             2148    IN      NS      uans-a.alaska.edu.

;; ADDITIONAL SECTION:
sipproxy1.uaf.edu.      3600    IN      A       137.229.91.2

;; Query time: 7 msec
;; SERVER: 137.229.34.137#53(137.229.34.137)
;; WHEN: Wed Dec  8 10:15:21 2004
;; MSG SIZE  rcvd: 133

[root@sipproxy1
 root]# dig -t SRV _sip._udp.uaf.edu

; <<>> DiG 9.2.3 <<>> -t SRV _sip._udp.uaf.edu
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34871
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; QUESTION SECTION:
;_sip._udp.uaf.edu.             IN      SRV

;; ANSWER SECTION:
_sip._udp.uaf.edu.      600     IN      SRV     0 100 5060
sipproxy1.uaf.edu.

;; AUTHORITY SECTION:
uaf.edu.                3600    IN      NS      ns.uaf.edu.

;; ADDITIONAL SECTION:
sipproxy1.uaf.edu.      3600    IN      A       137.229.91.2
ns.uaf.edu.             3600    IN      A       137.229.18.15

;; Query time: 1 msec
;; SERVER: 137.229.34.137#53(137.229.34.137)
;; WHEN: Wed Dec  8 10:19:39 2004
;; MSG SIZE  rcvd: 121


--
Richard Machida
Associate Director, Computing & Communications
University of Alaska Fairbanks
233 Bunnell, Fairbanks, AK 99775-7700
v:907.474.7102 f:907.474.5910      PGP Key ID: 0xA0C92C28