Running mpls on an ipv6 only network
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Running MPLS on an IPv6-only Network. Wes George (operator asking for it) Vishwas Manral Rajiv Asati Rajiv Papneja Carlos Pignataro. IPv6-only Network Realization: Use case. Service Providers, Cable Companies, Mobile Operators, WiFi providers

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Running MPLS on an IPv6-only Network

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Running mpls on an ipv6 only network

Running MPLS on an IPv6-only Network

Wes George (operator asking for it)

Vishwas Manral

Rajiv Asati

Rajiv Papneja

Carlos Pignataro


Ipv6 only network realization use case

IPv6-only Network Realization: Use case

Service Providers, Cable Companies, Mobile Operators, WiFi providers

  • Thousands (or millions) of devices that need to be IP-addressable

    • Set Top boxes, macro/micro/femto/picocell devices, WiFi APs, M2M/IoT

    • Today: Massive overlap/reuse of RFC1918, squat, little public IPv4 space available

    • ASAP: Endpointsonly get IPv6 addresses, preserve IPv4 for customers

  • What happens when I need to extend my MPLS infrastructure/features/services to/through these IPv6-only nodes?

    • Does everything still work?

    • And don’t assume we can put IPv4 addresses on upstream PE or P routers either


Mpls ipv6 network use case time line

MPLS IPv6 network: Use case time-line

  • But isn’t IPv6-only networking a long way off?

    • Deploying IPv6-only devices TODAY

  • MPLS/LDP on IPv6-only networks isn’t needed yet, but let’s assume it will be within ~5 years:

    • IETF protocol dev process = 2+ years

    • Vendor Implementation and test = 1-2 years

    • Carrier test and roll-out = 1-2 years

  • Get IPv6-only support on MPLS ahead of when we need it

  • MUST NOT require IPv4 for proper and complete function (RFC6540)


Proposal a gap analysis

Proposal: A Gap Analysis

  • Assuming a network of IPv6-only PE/P routers

  • Assuming all services defined for MPLS Today


Gap analysis possible impact on ipv6 only mpls networks

Gap Analysis: Possible impact on IPv6 only MPLS networks

Assuming a network of IPv6-only PE/P routers

  • L2VPN/VPLS/MPLS-TP

  • L3VPN (4PE/4VPE??)

  • NG-MVPN (v4 and v6 multicast)

  • Control plane, LDP, TE

  • OAM

  • Both classical LDP and GRE/L2TPv3 over IPv6 transport (non-MPLS core)

  • Ensure that user data address family is agnostic of transport network address family

  • Some ongoing efforts in IETF to address known gaps

    • Updates to LDP for IPv6: draft-ietf-mpls-ldp-ipv6-08

    • Router-Alert : draft-manral-mpls-rsvpte-ipv6

    • Definitions of Textual Conventions (TCs) for Multiprotocol Label Switching (MPLS) Management : draft-manral-mpls-rfc3811bis-01


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