Cisco BTS 10200 Troubleshooting Manual page 830

Keepalive for Release 5.0 Maintenance Release 1.1 and Later
Figure B-15
illustrates the scenario in which the initial AUEP transmission does not receive an ACK message, but an
ACK is received in response to retransmissions.
Figure B-15 Two IP Addresses in DNS, ACK Received after Retransmissions
AUEP,
AUEP, initial 2nd transmission
transmission (1st retransmission)
mgcp-t-tran 2*mgcp-t-tran
AUEP,
2nd transmission
AUEP, initial
(1st retransmission)
transmission
mgcp-t-tran 2*mgcp-t-tran
The system attempts up to four different IP addresses for any single MGW listed in the DNS server. (This
Note
maximum number of IP addresses is not provisionable.)
Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
B-22
is applicable when two IP addresses are provisioned for the MGW in the DNS server. It
AUEP,
3rd transmission
(2nd retransmission)
4*mgcp-t-tran
AUEP, AUEP,
3rd transmission 4th transmission
(2nd retransmission) (3rd retransmission)
4*mgcp-t-tran
Appendix B System Usage of MGW Keepalive Parameters, Release 5.0
mgcp-max1-retries completed.
If no ACK is received, proceed to
next IP address and continue.
ACK
received
8*mgcp-t-tran
KA attempt
(AUEP transaction),
successful
mgcp-max1-retries,
for 1st IP address
(default = 2)
trying 1st IP address
Time
mgcp-max2-retries,
for 2nd IP address
(default = 3)
trying 2nd IP address
Time
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