10-28-2010 01:06 PM - edited 03-01-2019 05:25 PM
Welcome to the Cisco Networking Professionals Ask the Expert conversation. Service Provider and Enterprise network engineers are facing one of the major challenges since the inception of the Internet; the transition to IPv6. Several tools and techniques are available today to ease this major undertaking. This ask the expert session with Harold Ritter focuses on some of the tunneling techniques such as static tunnels, 6to4, isatap, 6rd and some of the translation mechanisms such as nat444, nat64, dual stack lite that will help network engineers reach their objective of making IPv6 ubiquitous. Harold Ritter is a technical leader with the Cisco Advanced Services Central Engineering team. He is responsible for helping Cisco top-tier Service Provider customers to design, implement and troubleshoot routing protocols and multicast, for both IPv4 and IPv6, and MPLS solutions in their environment. He is a regular contributor to CiscoLive. He has been a network engineer for more than 14 years. Harold is a CCIE (#4168) for Routing & Switching and Service Provider.
Remember to use the rating system to let Harold know if you have received an adequate response.
Harold might not be able to answer each question due to the volume expected during this event. Our moderators will post many of the unanswered questions in other discussion forums shortly after the event. This event lasts through November 5, 2010. Visit this forum often to view responses to your questions and the questions of other community members.
11-02-2010 07:30 PM
Can you talk a little bit about how IPv6 will work at the subscriber level. Will subscribers keep thier v4 address and be tunneled at the CPE device or will they have an actual IPv6 address on thier PCs. The latter concerns me because now my computer has a global address that is reachable via the internet. The nice thing about IPv4 and NAT was the fact that I could "hide" my devices behind the CPE device. How will this work with IPv6?
11-02-2010 10:00 PM
Hi Charles,
Yes, the PC will get a global IPv6 address. Contrary to what some people think, NAT is not an efficient security measure and on top of it it breaks end to end connectivity. So in my view, moving away from NAT on the CPE is a good thing.
Regards
11-03-2010 06:58 PM
Hi Harold,
Is Dual Stack currently supported in the Carrier Grade Solution Engine?
I appreciate your help.
Regards,
Andres Cortes
11-03-2010 09:55 PM
Hi Andres,
The CGSE does support services such as NAT44, NAT64, 6RD, ds-lite,etc. Can you elaborate on what you mean by, does the CGSE support dual-stack?
Regards
11-04-2010 10:07 AM
Hi Harold,
Regarding dual stak, the question is if it is possible to configure IPv4 and IPv6 in the interfaces ServiceApp belonging to the CGSE?.
Thank you.
Andres
11-04-2010 07:27 PM
Andres,
If you mean support IPv4 based and IPv6 based services in parallel, the answer is yes.
Regards
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