Minutes of the 3rd 6IG Meet
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Date: September 27th 2002
Time:   6:00 - 8:30PM
Venue: Wipro Technologies, Floating learning center, Electronics city
Theme: Deployment of IPv6

It was a wonderful drive on Friday into Electronic city in the outskirts of Bangalore on the Shuttle arranged by Wipro, we landed at E-City office to enter the Floating Learning centre, which is a serene location worthy of learning about "Deployment of IPv6". We had a packed hall in the big Dolphin learning Hall (In fact we had to stop accepting nominations for the meet, because of the huge pour-in of confirmation mails to attend the 6IG Meet)

Mr. Divakaran .M CTO, Wipro Technologies started out in welcoming the delegates of the IPv6 Forum in attending the 6IG Meet, He appraised about the current status of the Telecom Industry in India and abroad, and the key drivers which would help in bringing about the changes and how IPv6 would fit in the scenario. Also he appraised about Wipro's initative in driving these changes to the customers. He explained about the commitment and participation in the IPv6 Forum India and also in the technology groups.

Case Study - IPv6 Deployment - Mr. Rajashekhar Manam, Wipro,

He discussed about a medium sized company which would have plans to move into a IPv6 based environment, the best approaches which would be adopted in various phases, products and applications which would fit in appropriately. IPv4 to IPv6 transition mechanisms and optimal transition mechanism, Deployment Issues and phases.He discussed in detail about Transition Mechanisms and Best match mechanism, The approaches of

• Dual stack: Both the IPv6 and IPv4 stacks coexist on a host,
• Tunneling: IPv4 packets are tunneled through a network of IPv6 type and vice versa.
• 6 to 4 tunnel,
• configured tunnels
• 6 over 4 tunnel
• tunnel broker
• Translation: IPv4 packets are converted to IPv6 packets and vice versa.

He also gave an example of study made by British telecom on the estimation in terms of Deployment cost, transition time frame and ROI

Demo on "Tunneling" and "6Bone Connectivity" by Anil B from Wipro.

The demo on tunneling covered how 6to4 tunnels could be created and demonstrated access to a IPv6 webserver from an IPv6 client with the communication passing through an IPv4 network. He also discussed on how to set up IPv6 enabled DNS, Client and Webserver.

Demo on "6bone connectivity" explained the various steps involved in connecting a local IPv6 machine onto the 6bone network. The following steps were demonstrated to obtain 6 bone connectivity:

• Setting up of the default gateway.
• Obtaining the IPv6 address from PTLA (Pseudo Top Level Aggregation Identifiers).
• Setting up of the interfaces to forward packets
• Update the routing tables

and connecting to the 6Bone

Presentation on "VPN technologies and IPv6 networks" by Rana Sircar from Wipro.

A brief overview on how/what/where VPNs are deployed was discussed.  PPVPN -Provider provisionised VPN,  PPVPN (Provider Provisional VPN) which is a VPN in which the provider provides and manages the VPN, the three basic types of PPVPN

• PP network based or (PE based) IP VPN
• Provider Provisional Layer 2 VPN
• CPE based VPNs(most widely deployed VPN)

Also on the MPLS BGP Vpns,and it's issues like - SP Requires MPLS Network, SP PE Equipment to be upgraded to support IPv6 VPNS, CE Router supports IPv6. The various issues that arise and the  benefits/impacts out of using VPNs in conjunction with IPv6 networks was discussed with reference to How getting rid of Nat would help in end to end QOS, simpler IP address management, IPSec mandation, what VPN Mechanisms available He also gave an example of study made by British telecom on the estimation in terms of Deployment cost, transition time frame and ROI

RFC discussion on " RFC 2461  Neigbour Discovery" by Jitesh from Infosys. 

This specification defines the Neighbor Discovery (ND) protocol for Internet Protocol Version 6 (IPv6). Nodes (hosts and routers) use Neighbor Discovery to determine the link-layer addresses for neighbors known to reside on attached links and to quickly purge cached values that become invalid. Hosts also use Neighbor Discovery to find  neighboring routers that are willing to forward packets on their behalf. Finally, nodes use the protocol to actively keep track of which neighbors are reachable and which are not, and to detect changed link-layer addresses. When a router or the path to a router fails, a host actively searches for functioning alternates.

Some of the advantages/added features when compared to similar set of protocols in IPv4 are Router Discovery in base protocol, Address Autoconfiguration,

Default MTU configuration, Neighbor Unreachability Detection,  Address resolution as a part of ICMP. Currently all the popular OS support Neighbor Discovery.

Announcement of the Global Summit in January 2003

Jayachandra, Director Education and Awareness, IPv6 Forum India, gave an overview of the Global summit which would be happening in January 2003, and also a call for speakers/volunteers to participate in the Global Summit organised by the IPv6 forum India.

Demo on "NAT-PT" by Srinivas A from Wipro. 

The demo described the mechanisms of address translation and protocol  translation and demonstrated http connectivity between an IPv6 client and an IPv4 webserver.The NAT-PT machine runs both IPv4 & IPv6 stacks along with the NAT-PT software. Any one machine in the IPv4 network can be used as IPv4 host. A machine running IPv6 stack is connected directly to the NAT-PT machine. demonstration of these NATPT capabilities following experiments were covered:

• PING from IPv6 Host to IPv4 Host (and vice versa)
• FTP from IPv6 Host to IPv4 Host (and vice versa) -Bulk File Transfer
• Browse web pages hosted on IPv6 machine from IPv4 machine (and vice versa)

Best Regards,
Mallik Prasad S

Celstream Technologies,
#9,Prestige Blue Chip Software Park Block II,
Hosur Road,(Besides Bangalore Dairy),
Bangalore - 560 029.
Ph: 4191919 Fax: 4191900

mailto:s.mallik.prasad@...