Agg/BNG

Multiple Access Region PE pairs

xDSL/GPON RADIUS Auth & Accounting Servers

IP/MPLS Core Network

ALU Border routers

The Internet

ALU Border routers

IPv6 added to DNS caches and Authservers, IPv6 glue records

Youtube, Netflix, Akamai , RTE CDNs

Access Node RG modem

HSS

UE

ALU CGNAT

Cisco S/PGW

Ericsson SGSN-MME

Huawei RAN GW router

ALU Agg/BNG ALU Access Region PE pair

ALU EPC site PE pair

Agg collocated with RAN GW router

xDSL/GPON RADIUS Auth & Accounting Servers e/NodeB

IP/MPLS Core Network

ALU Border router

The Internet

ALU Border router

UE to PGW user-plane is GTP-U tunnelled over IPv4

IPv6 added to DNS caches and Authservers, IPv6 glue records

Youtube, netflix, akamai CDNs

S-CDR billing mediation

23

PGW SGi1

IPv6 Internet IPv6 Internet

NAT44

&

NAT64

CGN

NAT64 CGN

OSPFv3 is used to anycast the

RFC 6052 Well-Known prefix,

64:ff9b::/96 from the

NAT64/CGNs. In the PE local

routers this is preferred over

iBGP route also advertised for

(64:ff9b::/96) through Route

Reflectors. The NAT64/CGNs

back each other up.

PGW SGi1

IPv6 Internet IPv6 Internet

NAT44

&

NAT64

CGN

NAT64 CGN

Mobile DNS servers have been

enabled for DNS64 responses to

AAAA DNS queries from

2a01:b340::/32 Mobile UEs

Middleware provisions APN

access permissions for both IPv4

& IPv6* in HLR (*to be

implemented/ a little extra XML).

In HSS it is a global update to

allow IPv4_OR_IPv6 for every

APN

Separate

VLAN and

eBGP peeing

for IPv6

PE Pair in Site 2 PE Pair in Site 1