The problem was my testing procedure. I simulated the http connection using telnet to http port but i didnt generated any traffic(requests). I repeated the tests using GET requests and the nat session table was replicated almost instant.
I post the degug messages.
The NAT replication trigger is the next segment,request in the tcp session.
Telnet from client
telnet 10.31.73.12 3099 *Nov 7 03:52:17.071: TCBB2701B60 connected to 10.31.73.12.3099GET / HTTP/1.0 GET / HTTP/1.0 GET / HTTP/1.0
Becomes Active at 03:52:32,34
NATGW2# *Nov 7 03:52:32.700: %HSRP-5-STATECHANGE: Ethernet0/2 Grp 100 state Standby -> Active NATGW2# *Nov 7 03:52:32.701: IP-ADDR: ipaddr_table_insert_w_tableid() 10.31.71.254, in global table on Ethernet0/2 NATGW2# *Nov 7 03:52:34.657: %HSRP-5-STATECHANGE: Ethernet0/1 Grp 200 state Standby -> Active
new Active listens for ARP requests for the HSRP IP
*Nov 7 03:52:34.658: IP-ADDR: ipaddr_table_insert_w_tableid() 192.168.153.253, in global table on Ethernet0/1
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...