IPv6 activities in Greece

Dimitrios Kalogeras, Ph.d

Agenda

Greek Research Network Differences between IPv4 and IPv6 IPv6 in GRNET GRNET member of 6net GRNET2 IPv6 in AIX IPv6 in SEEREN 6PE over CsC QoS and IPv6

GRNET

The Greek NREN Presence all over

Greece 80 universities and

research institutes Backbone for schools

IPv4 / IPv6 differences

Bigger but less complex headers

No new routing protocols Adapted to carry bigger

addresses Security is implied even in

routing protocols with IPSEC

Fragment Offset

Flags

Total LengthType of Service

IHL

PaddingOptions

Destination Address

Source Address

Header ChecksumProtocolTime to

Live

Identification

Version

Next Header

Hop Limit

Flow LabelTraffic Class

Destination Address

Source Address

Payload Length

Version

IPv4 HeaderIPv4 Header IPv6 HeaderHeader

- Field’s name kept from IPv4 to IPv6

- Fields removed in IPv6

- Name & position changed in IPv6

- New field in IPv6

IPv6 in GRNET

First deployment of an overlay topology with tunnels and connectivity with 6bone.

Single node in GRnet Gain experience with the new protocols and

operational practice with management tools. Initial service deployment with DNS Preparation of RFP for IPv6 capable routers Receive normal IPv6 prefixes form RIPE Prepare an addressing plan for a /32 network ( ~

4 billion addresses

GRNET member of 6net

6net: a FP5 project for a pan-European IPv6 network

Gain experience and knowledge through interaction with other NRENs and Cisco.

Adopt new techniques and practices for routing and operations ( i.e. embedded-RP in multicastv6, security etc)

GRnet active in QoS, applications, management and Security WP

GRnet prepares a pilot of transitioning a big operational network: the Greek school network

GRNET2

The new network is built with IPv6 support in mind.

Campus networks start connecting with IPv6 and transiting services in IPv6 also.

GRNET uses IS-IS and BGP-MP as routing protocols

IPv6 in AIX

Aix is the Athens Internet Exchange It is implemented by a L2 switch Separate port of IPv6 aware traffic INCENTIVE :No membership fees for IPv6 port Experimental peering with a commercial ISP

SEEREN and IPv6

Originally not planned to provide IPv6 Implemented with an MPLS based technology:

Carrier Supporting Carrier (CSC) CSC is an MPLS IPv4 based tunnel technology Is it possible to provide IPv6 to the end users

without traditional tunnels when the Carrier does not support IPv6 ?

YES !!! With a lot of innovation and troubleshooting of Cisco and our colleagues in AMREJ

6PE over CSC - Not a simple solution

6PE over CsC

Integration of two techniques:

– 6PE functionality is installed on the CEs instead of the PEs!

– 6PE peers belong to different administrative domains.

– Three Label Stack !!!– Feasible, because CE-

PE connection uses MPLS.

IPv6L6

IPv

6 L

ab

els

- MP

-BG

PX

MP

LS

Clo

ud

RaPE

RbP

RcP

RdPE

C2CE

C1CE

P

Labels

LD

P

Labels

LD

P

Labels

LD

P

LvLc Lv

LvLb

Lv VP

N L

ab

els

- MP

-BG

P

CSCLabelsViaLDP or BGP

Lc

CSCLabelsViaLDP or BGP

IPv6L6

IPv6L6

IPv6L6

IPv6L6

6PE

6PE

IPv6 and QoS

Test QoS implementation in Cisco hardware platforms

Provide feedback to Cisco for problems in QoS handling when IPv6 is in use.

Finally fixed in the latest IOS.

??Questions???