SIP Traffic in CRS-3 Carrier Grade NAT (CGN) with PAT

[rfernandez]

Hello

Does the SIP traffic through the module CGN works? We use PAT in the module.

Thank you for your comments

Rodolfo

[Nicolas Fevrier · Accepted solution]

Hi Rodolfo,

yes, SIP can be used with no issue through CGN system without the need of any particular ALG if SBC performs media-latching.

Take a look at this preso:

http://www.cisco.com/web/CA/events/pdfs/CNSF2011-IPv6-Transition-for-SPs-Chris-Metz.pdf

Kind regards,

N.

[rfernandez]

Thank you, this is very useful.

Rodolfo.