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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Ah,
the joys of supporting an infrastructure that consists of only SCCP controlled
FXS ports over satellite links… <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Here
is the issue this time. There was some bad weather at the teleport (where
the big dish is) which causes a satellite outage for a few minutes. Each
remote site has a SCCP gateway (2801 running 12.4(24)T) that is registered to
CM 7.0 and is also configured with SRST so it will register with itself when (not
if) the sat link eventually goes down. This has worked fine in testing
and in the few months this network has been in place. This time however,
when the sat link went down for a few minutes, lots of phones (SCCP controlled FXS
ports) did not re-register to the CM when the link came back up. It seemed
to be very random. At some sites all ports were registered, at some no
ports were registered and others there was only 1 or 2 ports not
registered. I went through CM to find the ports that were not registered
and simply bounced the voice-port on the router and every one registered almost
immediately after doing this.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>We
have a test site at the office and fortunately it did not register either so I have
the problem reproduced. I see the following on the SCCP gateway doing a ‘deb
sccp packet’ while experiencing the problem:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.028 CST: sccpapp_process_socket_events: appl_type 4, soc_fd 1, soc
0, swb_soc 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.028 CST: sccpapp_process_socket_events: SWB_TCP_SOCKET_READ:
appl_type 4, swb_eve 4, swb_state 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.028 CST: sccp_send_register_msg: Send register msg for appl_type 4,
swb_soc 1, device_name AN1D7015355A000, ip_addr 10.222.115.6, ipv4_scope
2, ipv6_addr ::, ipv6_scope 0, device_type 30027, protVer --> rsvp_enabled 0<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.032 CST: protocol_ver 0x11000102 max_streams 1, active_streams 0<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.032 CST: sccp_send_register_msg: st_ptr EF1A49A0<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.032 CST: sccp_send_register_msg: Register msg txed in hex(including
header) - len 136<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.032 CST: sccp_print_hex_msg: Len:136 Hex:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>80
00 00 00 00 00 00 00 01 00 00 00 41 4E 31 44 37 30 31 35 33 35 35 41 30 30 30
00 00 00 00 00 01 00 00 00 0A DE 73 06 4B 75 00 00 01 00 00 00 00 00 00 00 11
00 01 02 30 30 20 30 30 20 30 30 00 00 00 00 00 00 00 00 00 00 00 00 02 00 00
00 30 30 20 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.032 CST: sccp_transmit_msg: sending on socket 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>DGL394GW01#<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.032 CST: sccp_send_ip_port_msg_v1: send ip port msg with id 2, port
0<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.032 CST: sccp_transmit_msg: sending on socket 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.628 CST: sccpapp_process_socket_events: appl_type 4, soc_fd 1, soc
0, swb_soc 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sep
28 09:07:56.628 CST: sccpapp_process_socket_events: SWB_TCP_SOCKET_READ:
appl_type 4, swb_eve 4, swb_state 5<o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:red'>Sep 28 09:07:56.628 CST: sccp_process_swb_control_message: rcvd
register rej from SWB CCM, reason: Security Error<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The
last line stands out to me. What type of security error would there
be? I see the same in the CM traces (taken last week):<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>09/25/2009
16:57:28.376 CCM|StationD: (1605527) RegisterReject
text='Security Error'.|<CLID::StandAloneCluster><NID::10.1.101.11><CT::2,100,37,1.51862723><IP::10.222.115.6><DEV::AN1D7015355A000><LVL::State
Transition><MASK::0020><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>This
seems to be key. I’m assuming the port will register if I bounce
the voice-port on the gateway, but I wanted to keep it ‘broken’ to
see what is going on. The test bed and all other sites are configured
with SRST as well, but many did not register even to the SRST router. Obviously
this is a problem for the customer if they cannot be sure the ports will
register after an outage. I have all the traces if more will be useful.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Any
assistance is appreciated as always. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks!<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>-Keith
Klevenski<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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