New subject: [Serusers] SRV failover question

4 Dec 2006


      Greger and all,
The URL does not really help.  You will see my cfg script below is
already using rewritehostport with no port and the SRV name.
I also am not using t_on_failure as it should not be necessary according
the post by Klaus.
Heres my SRV table with the ranking priorities:
_sip._udp.vxml.pats.cisco.com   SRV service location:
          priority       = 1
          weight         = 1
          port           = 5060
          svr hostname   = vxml-1.pats.cisco.com
_sip._udp.vxml.pats.cisco.com   SRV service location:
          priority       = 2
          weight         = 1
          port           = 5060
          svr hostname   = vxml-2.pats.cisco.com
_sip._udp.vxml.pats.cisco.com   SRV service location:
          priority       = 3
          weight         = 1
          port           = 5060
          svr hostname   = vxml-3.pats.cisco.com
pats.cisco.com  nameserver = ns1.pats.cisco.com
vxml-1.pats.cisco.com   internet address = 10.86.129.x
vxml-2.pats.cisco.com   internet address = 10.86.129.x
vxml-3.pats.cisco.com   internet address = 10.86.129.x
ns1.pats.cisco.com      internet address = 10.86.129.x
Thanks anyone for any help,
Paul
________________________________
From: Greger V. Teigre [mailto:greger@teigre.com] 
Sent: Monday, December 04, 2006 6:41 AM
To: Paul Antinori (pantinor)
Cc: serusers@iptel.org
Subject: Re: [Serusers] SRV failover question
http://lists.iptel.org/pipermail/serusers/2006-October/030813.html
Paul Antinori (pantinor) wrote:
Hi,
Regarding the SRV query addition in (ser-0.9.7-pre7), when the
call fails on the first priority destination, it never seems to attempt
to send the INVITE to the second priority destination in the SRV
response list.  Is there anything else to script in the ser.cfg file to
get this to work?
Thanks for help,
Paul
[root@iptel-sip-proxy /]# /usr/sbin/tethereal | grep SIP 
    Capturing on eth0 
     10.100556 10.86.142.144 -> 10.86.129.17 SIP Request: INVITE
sip:77710107773365@10.86.129.17:5060;transport=udp 
     10.101774 10.86.129.17 -> 10.86.142.144 SIP Status: 100 trying
-- your call is important to us 
     14.233596 10.86.129.17 -> 10.86.142.144 SIP Status: 408 Request
Timeout 
     14.235930 10.86.142.144 -> 10.86.129.17 SIP Request: ACK
sip:77710107773365@10.86.129.17:5060;transport=udp 
    2139 packets captured
[root@iptel-sip-proxy /]# /usr/sbin/tethereal | grep DNS 
    Capturing on eth0 
      4.279486 10.86.129.17 -> 10.86.129.16 DNS Standard query SRV
_sip._udp.vxml.pats.cisco.com 
      4.279897 10.86.129.16 -> 10.86.129.17 DNS Standard query
response SRV 1 1 5060 vxml-1.pats.cisco.com SRV 2 1 5060
vxml-2.pats.cisco.com SRV 3 1 5060 vxml-3.pats.cisco.com
4.280045 10.86.129.17 -> 10.86.129.16 DNS Standard query A
vxml-1.pats.cisco.com 
      4.280231 10.86.129.16 -> 10.86.129.17 DNS Standard query
response A 10.86.129.2   <--this is unplugged from the network
debug=3 
    fork=yes 
    log_stderror=yes 
    rev_dns=no 
    port=5060 
    children=4 
    check_via=no 
    sip_warning=yes 
    fifo="/tmp/ser_fifo" 
    uid="nobody" 
    gid="nobody"
#aliases for this proxy server 
    #ie hostnames/domains that it routes for 
    alias=sox.cisco.com 
    alias=pats.cisco.com
loadmodule "/usr/local/lib/ser/modules/sl.so" 
    loadmodule "/usr/local/lib/ser/modules/tm.so" 
    loadmodule "/usr/local/lib/ser/modules/rr.so" 
    loadmodule "/usr/local/lib/ser/modules/maxfwd.so" 
    loadmodule "/usr/local/lib/ser/modules/usrloc.so" 
    loadmodule "/usr/local/lib/ser/modules/registrar.so" 
    loadmodule "/usr/local/lib/ser/modules/textops.so"
modparam("usrloc", "db_mode",   0) 
    modparam("rr", "enable_full_lr", 1) 
    modparam("tm","fr_timer",5) 
    modparam("tm","fr_inv_timer",5)
route{
if (!mf_process_maxfwd_header("10")) { 
                    sl_send_reply("483","Too Many Hops"); 
                    break; 
            };
if (uri=~"^sip:1") { 
                    log(1, "SER found 1*\n"); 
    
rewritehostport("ccm.pats.cisco.com");route(1);break; 
            } 
            if (uri=~"^sip:2") { 
                    log(1, "SER Found 2*\n"); 
    
rewritehostport("ccm.pats.cisco.com");route(1);break; 
            } 
            if (uri=~"^sip:7") { 
                    log(1, "SER Found 7*\n"); 
    
rewritehostport("vxml.pats.cisco.com");route(1);break; 
            } 
            if (uri=~"^sip:8") { 
                    log(1, "SER Found 8*\n"); 
    
rewritehostport("SER.pats.cisco.com");route(1);break; 
            } 
            if (uri=~"^sip:9") { 
                    log(1, "SER Found 9*\n"); 
    
rewritehostport("ringtone.pats.cisco.com");route(1);break; 
            }
log(1,"Could Not Match DN to Route\n"); 
            route(1); 
    }
route[1] 
    { 
            if (!t_relay()) { 
                    sl_reply_error(); 
            }; 
    }
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RE: [Serusers] SRV failover question