[cisco-voip] NAT on Cisco IOS

[Brain Whistler]

Hi, 

I am running my Call Manager and the IP Phones behind
the NAT. I have cisco 2621XM router with 12.3.14T2
IPVoice IOS. Call Manager is configured with static
NAT while IP Phones are on Dynamic NAT. H323 is used
for call setup. 

Randomly, the router stops doing NAT and call manager
cannot establish the call. Untill i have to clear
static with 'no' command and then configure it again.
Below is the message i get. 

*May 9 20:11:16.099: NAT[0]: H323: received pak,
payload_len=0 
*May 9 20:11:19.067: NAT[0]: H323: received pak,
payload_len=0 
*May 9 20:11:25.099: NAT[0]: H323: received pak,
payload_len=0 
*May 9 20:11:54.103: NAT[0]: H323: received pak,
payload_len=0 

Or somtimes like this, 

*May 11 05:10:26.161: NAT[0]: H323: received pak,
payload_len=1 
*May 11 05:10:26.165: NAT: H323: [0] Garbage Octet
found 
*May 11 05:10:26.421: NAT[1]: H323: received pak,
payload_len=0 
*May 11 05:15:26.505: NAT[0]: H323: received pak,
payload_len=1 
*May 11 05:15:26.505: NAT: H323: [0] Garbage Octet
found 
*May 11 05:15:27.509: NAT[0]: H323: received pak,
payload_len=1 
*May 11 05:15:27.509: NAT: H323: [0] Garbage Octet
found 
*May 11 05:15:27.765: NAT[1]: H323: received pak,
payload_len=0 


Does anyone have any idea on it.

Brain



		
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