ptx use cases chris whyte. copyright © 2014 juniper networks, inc. 2 use case definitions mpls lsr...

PTX Use CasesChris Whyte

Copyright © 2014 Juniper Networks, Inc. 2

Use Case Definitions

MPLS LSR CORE Router responsible for MPLS label swap operations, a.k.a., label switching, in the (super)core backbone infrastructure. Requires small IP FIB and large LFIB.

IP CORE Router responsible for IPv4/IPv6 routing in (super)core backbone. Typically requires full IP FIB.

CONVERGED CORE (core/optical) Similar router to IP/LSR core but also performs packet optical integration. The convergence aspect is due to the integration of both L3 core routing/MPLS switching and transport functionality. Can require small or full IP FIB but large LFIB.

METRO PACKET OPTICAL TRANSPORT

Router responsible for providing packet optical transport (MPLS LSR) in metro core network. Typically requires medium to large LFIB.

INTERNET PEERING Router responsible for connectivity to transit providers and peers to exchange of IPv4 and IPv6 reachability via eBGP in order to route internet traffic. Interconnects with IP/MPLS core. Typically requires full IP FIB and large LFIB.

VPN Autonomous System Boundary Router (ASBR)

Interprovider L3VPN Option A provides inter-AS VRF-to-VRF connectivity at the ASBRs. Interprovider L3VPN Option B provides inter-AS eBGP redistribution of labeled VPN-IPv4/v6 routes between neighboring ASs. Interprovider L3VPN Option C provides inter-AS multihop eBGP redistribution of labeled VPN-IPv4/v6 routes between source and destination ASs and with eBGP redistribution of labeled IPv4/v6 routes between neighboring ASs.


Use Case Definitions

Seamless MPLS Border Node (BN) Border Node is LER (LSP ingress/egress) for intra-domain (LDP, RSVP-TE) and transit LSR for inter-domain LSP.

Infrastructure Edge Transport IP and MPLS infrastructure related to the customers business. Used to Interconnect data center network/fabric/cloud over metro/WAN network. On the client side it is used for L3 aggregation and packet optical transport.

DCI TRANSPORT Router responsible for interconnecting two or more datacenter (DC) sites using packet optical integration typically over dark fiber. Requires large LFIB.

DCI Core Router responsible for interconnecting DC to IP/MPLS core backbone infrastructure. Requires small or full IP FIB but large LFIB.


PTX

Transit/Core

MPLS Core

IP Core

Converged Core

Metro

Transport

Border

VPN ASBR

S-MPLS

BN

Internet

Peering

Infrastructure

Edge

Content/ Web2.0

Internet Peering DC Core

DC Intercon

nect

Use Case Groups


Transit/Core


MPLS LSR CORE

Obtains reachability to all PE/LER nodes via MPLS RSVP/LDP LSPs

PTX control plane can still run BGP even with LSR license by selectively downloading RIB into FIB for PE/LER reachability only

High transit LSP count required

PTX as LSR Core Router INET

RR

PEeBGP

LDP/RSVP

IS-IS/OSPFiBGP

PTX

PE/LER

PE/LER


IP CORE

INET

RR

PEeBGP

LDP/RSVP

Backbone for IPv4/IPv6 transport

Optimized for high-density 100GE

Requires full Internet FIB (IPv4/IPv6)

External reachability via BGP Internal reachability via IS-

IS/OSPF

PTX as IP Core Router

IS-IS/OSPFiBGP

PTX


CONVERGED CORE

Convergence of multiple network planes with packet optical integration to reduce duplicate investment

Routers have full visibility of underlying optical transport, improving traffic engineering

Avoids network level traffic loss in case of service affecting maintenance work by proactive and automated traffic rerouting

PTX as a Converged Core Router

Ethernet Transport

DC WANWireless LTE

PTX PTX

Ethernet Transport Wireless LTE

DWDM


METRO PACKET OPTICAL TRANSPORT

Ideal for space-constrained, power-optimized metro central offices – PTX3000

Combines the statmux benefits of IP with the predictability and management of optical transport

Leverages latest technology in 100Gbps transponders, advanced silicon and SDN

PTX as a Metro Transport Router

….

DC1

PTX

PTX

DWDM

Data Center

PTX

PTX


Border


IP INTERNET PEERING

RR

eBGP

LDP/RSVP

Capable of 2M+ IPv4/IPv6 FIB

Optimized for extremely dense peering

Extensible PE/LER capabilities optimizing connectivity to large MPLS backbone

Feature set targeted specifically for application: distributed Jflow/IPFIX, uRPF, SCU/DCU, BGP Flowspec

PTX as a Peering Router

IS-IS/OSPFiBGP

AS3

AS2

AS1

PTX


VPN ASBR

ASBRs configured as regular PE routers providing MPLS L3VPN service to neighboring AS Control and forwarding planes ASBR holds all VPN labels and PE reachability

PTX as an Inter-AS Option A Router

PE PE

CE CE

Ctrl pathForwarding path

MP-eBGP(unlabeled IPv4/IPv6 routes)

ASBR ASBR

VRFA

VRFB

VRFA

VRFB

PTX PTX

VRFA VRFB VRFB VRFA


VPN ASBR

Control plane ASBR holds all VPN labels and PE reachability Forwarding path (FIB) only has reachability to all the PE nodes locally and remotely

PTX as an Inter-AS Option B Router

PE PE

CE CE


MP-eBGP labeled (VPNv4/v6 routes)

ASBR ASBR

PTX PTX

VRFA VRFB VRFB VRFA


VPN ASBR

Router Reflector holds the whole VPN prefixes and labels ASBR forwarding path (FIB) only holds the labels to reach all the PEs locally and remotely

PTX as an Inter-AS Option C Router

PE PE

CE CE


MP-eBGP labeled (VPNv4/v6 routes)

ASBR ASBR

PTX PTX

VRFA VRFB VRFB VRFA


SEAMLESS MPLS BORDER NODE

Each IGP area has intra-area routes only plus routes to ABRs Non-ABR LSR hosts intra-area routes and routes to ABRs (without nexthop-self) Non-ABR LSR only hosts intra-area routes (with nexthop-self)

BGP labels are used to reach ABR and LER in remote areas ABR has labels assigned to all PEs

IGP LDP labels are used to reach core ABR

PTX as a S-MPLS BN Router

ABR

ABR

ABR

ABR

iBGP-LU iBGP-LU iBGP-LU

Area0Area1 Area2

LER

LER

LER

LER

LSRLSR

CE

CECE

CE

LSR

PTX PTX


INFRASTRUCTURE EDGE

RR

LDP/RSVP

Designed to optimize IP and MPLS infrastructure support related to customers’ business

Extensible MPLS PE capabilities ideal for connecting infrastructure L3VPNs

Coherent optics integration to leverage DWDM transport systems

PTX as a Infrastructure Edge Router

IS-IS/OSPFiBGP

CE

CE

CE

PTX

VRFB

VRFA

MPLS LSRCore

VRFC

DWDM


Content/Web2.0


IP INTERNET PEERING

RR

eBGP

LDP/RSVP

Capable of 2M+ IPv4/IPv6 FIB

Optimized for extremely dense peering

Extensible PE/LER capabilities optimizing connectivity to large MPLS backbone

Feature set targeted specifically for application: distributed Jflow/IPFIX, uRPF, SCU/DCU, BGP Flowspec

PTX as a Peering Router

IS-IS/OSPFiBGP

AS3

AS2

AS1

PTX


DATACENTER CORE

Positioned for WAN core layer in mega datacenter

Power efficient, high density 10GE/40GE

Extensible PE/LER capabilities to optimize connectivity to large MPLS backbone

PTX as a Datacenter Core Router

Server ….

Spine

Data Center

Core

WAN/Core

Leaf

PTX PTX


DATACENTER INTERCONNECT

Datacenter Router (DR) hosts the full or partial Internet table

Integrated transponder for datacenter interconnect up to 2500km

Optimized 10GE/40GE density for connectivity to spine layer in mega datacenter

PTX as a Datacenter Interconnect Router

Server

Spine

….

DC1

DC2

DWDM

PTX

PTX

Peering

PTX LSR Core

Leaf

Data Center

PTX

ptx use cases chris whyte. copyright © 2014 juniper networks, inc. 2 use case definitions mpls lsr...

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