1. PTX Use Cases Chris Whyte
We live in a connected world and the foundation for these connections is the network.
Broadband Internet traffic is doubling each and every year (according to IDC) [or] Internet traffic worldwide will grow three-fold by the year (Internet Trends, Mary Meeker (KCPB)
Today we have 2.5 billion Internet users in the world – roughly one-third of the Earth’s population. In the next decade, the number of Internet users will double to 5 billion (Mary Meeker, KPCB)
That means that two-thirds of the world will be connected by 2023.
When you add in the big trends of cloud, mobility, video and security, the combined rate of acceleration is placing unprecedented demands on the network.
[Optional stats/factoids]
100 hours of video uploaded every single minute to YouTube (YouTube)
Mobile video traffic exceeded 50 percent for the first time in (Cisco VNI)
Mobile network connection speeds more than doubled in (Cisco VNI)
In 2012, a fourth-generation (4G) connection generated 19 times more traffic on average than a non-4G connection. Although 4G connections represent only 0.9 percent of mobile connections today, they already account for 14 percent of mobile data traffic. (Cisco VNI)
[NOTE: Consider finding alternate source for above stats to avoid siting Cisco]
As you just described (refer to pain points from previous slide), you are living in this world and feeling the pressure every day.
Pradeep Sindhu founded Juniper 17 years ago on the belief that we should solve technology problems that matter most to our customers and that make a difference in the world. He recognized the importance of the network and the impact it would have on our world.
Our mission is simple, but powerful; to connect everything and empower everyone.
In today’s connected world, this mission is more relevant than ever.
Here at Juniper we are focused on helping alleviate those pain points through our portfolio of high performance networking products.
[T] And we do this by listening to our customers and helping them address their challenges and capitalize on their opportunities.
PTX Use Cases
Chris Whyte

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.

3. 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.

4. Use Case Groups PTX Transit/Core Border Content/ Web2.0 MPLS Core
IP Core
Converged Core
Metro Transport
Border
VPN ASBR
S-MPLS BN
Internet Peering
Infrastructure Edge
Content/ Web2.0
DC Core
DC Interconnect

5. Transit/Core

6. MPLS LSR CORE PTX as LSR Core Router
INET RR PE
eBGP
LDP/RSVP
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
PE/LER
IS-IS/OSPF
iBGP
PTX
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
PE/LER

7. IP CORE PTX as IP Core Router Backbone for IPv4/IPv6 transport
INET RR PE
eBGP
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
IS-IS/OSPF
iBGP
PTX
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).

8. PTX as a Converged Core Router
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
DC WAN
Wireless LTE
Ethernet Transport
DWDM
PTX
PTX
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
Ethernet Transport
Wireless LTE

9. METRO PACKET OPTICAL TRANSPORT
PTX as a Metro Transport Router ….
DC1
PTX
DWDM
PTX
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 border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
Data Center

10. Border

11. IP INTERNET PEERING PTX as a Peering Router
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
AS1
AS3
eBGP
PTX RR
IS-IS/OSPF
iBGP
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
LDP/RSVP

12. PTX as an Inter-AS Option A Router (unlabeled IPv4/IPv6 routes)
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 CE
Ctrl path
Forwarding path
MP-eBGP
(unlabeled IPv4/IPv6 routes)
ASBR
PTX
VRFA
VRFA
PTX
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
VRFB
VRFB
VRFA
VRFB
VRFB
VRFA

13. PTX as an Inter-AS Option B Router
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 CE
Ctrl path
Forwarding path
MP-eBGP labeled
(VPNv4/v6 routes)
ASBR
PTX
PTX
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
VRFA
VRFB
VRFB
VRFA

14. PTX as an Inter-AS Option C Router
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 CE
Ctrl path
Forwarding path
MP-eBGP labeled
(VPNv4/v6 routes)
ASBR
PTX
PTX
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
VRFA
VRFB
VRFB
VRFA

15. SEAMLESS MPLS BORDER NODE
PTX as a S-MPLS BN Router
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 CE
iBGP-LU
iBGP-LU
iBGP-LU
ABR
ABR CE
LER
LER
LSR
LSR
LSR
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
PTX
PTX
Area1
Area0
Area2
LER
LER
ABR
ABR CE CE

16. PTX as a Infrastructure Edge RouterCE
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 CE CE
VRFA
DWDM
VRFB
VRFC RR
PTX
MPLS LSR
Core
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
IS-IS/OSPF
iBGP
LDP/RSVP

17. Content/Web2.0

18. IP INTERNET PEERING PTX as a Peering Router
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
AS1
AS3
eBGP
PTX RR
IS-IS/OSPF
iBGP
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
LDP/RSVP

19. PTX as a Datacenter Core Router
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
AS border functionality is (Inter-AS VPN option B and C; S-MPLS BN).

20. DATACENTER INTERCONNECT
PTX as a Datacenter Interconnect Router
Server
Spine ….
DC1
DC2
DWDM
PTX
Peering
PTX LSR Core
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 border functionality is (Inter-AS VPN option B and C; S-MPLS BN).
Leaf
Data Center