Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Issue with NATing h.323 Packets

Dear Gurus

     Can any one please say me how to configure NAT the packet, generated by the polycom video conferencing device towards an ISP.

Thanks you .....

5 REPLIES
New Member

Issue with NATing h.323 Packets

Hi Krishna,

We need more info before going forward.

  1. Why do you want to NAT your polycom to the internet?
  2. how many public IP do you have?
  3. Is there any application/hardware layer firewall before or after your cisco equipment?

We need these info before proceeding to the initial config.

Regards,

Terence

New Member

Re: Issue with NATing h.323 Packets

Dear Terence,

Connectivity:

**

1. ISP link was connected to Router.

2. Router Switch link is connected to a switch.

3. switch was connected with many devices link polycom VC Device, wireless

Access point and some other room automation devices was also connected.

Result:

Therefore internet was working fine for the users connecting with wireless

and wired.

But VC call was not connecting for the remote site.

Test Cases:

**

If I bypass our Cisco 1941 router and connecting directlly the ISP link to

the polycom device. Then the call is connecting to teh remote site.

Please ask me if youy need more information

With Regards,

Chaitanya.G

On Fri, Nov 4, 2011 at 11:46 AM, terrencepayet <

Re: Issue with NATing h.323 Packets

do you have any FW , ACL or any packet filtering in the path ?

because h323 is only the signaling and once the signaling done the VC end points need to send and receive dynamically negotiated UP ports for the RTP media traffic and if you have any filtering without inspection to allow this the VC traffic wont pass through

hope this help

New Member

Re: Issue with NATing h.323 Packets

Dear Marwanshawi,

A basic NAT was configured,apart from this nothing was configured.

No Firewall.

One ACL - configured to allow any traffic (NAT).

NO Packet Filtering.

With Regards

Chaitanya.G

On Fri, Nov 4, 2011 at 1:13 PM, marwanshawi <

New Member

Re: Issue with NATing h.323 Packets

Dear Marwanshawi ,

Can you say, for what the below command is used

ip nat service rtsp port port-number

With Regards,

Chaitanya.G

324
Views
0
Helpful
5
Replies
CreatePlease to create content