MPLS VPN Metro Ethernet Case Studies

1
MPLS VPN / Metro Ethernet Case Studies

• Telstra TelstraClear (NZ)

Apricot 2002
Simon Newstead Australia / New Zealand snewstead_at_u
nispherenetworks.com
2
TelstraClear Case StudyBackground

• New Metro-Ethernet rollout
• CBD fiber ring rollout through NZ
• Focus on business wholesale customers
• Integrates GigE and other access ATM, HFC
  cable, tunneled
• End-end solution
• Unisphere edge routers (ERX-1400)
• Juniper core routers (M160, M20)
• Extreme Ethernet switches (Summit, Blackdiamond)
• Network first deployed in May 2001

3
TelstraClear Case Study Network Overview
Metro Ethernet Access Network (Layer 2 only)
Unisphere ERX-1400 Edge Router (PE)
GigE fiber rings
(P routers)
GigE VLAN
Core Router BackbonePoS OC-48
Ring protection
GigE MPLS
10/100

BusinessInternet and VPN customers
Virtual Routers and MPLS VPNs
ATM access
Cable HFC
4
TelstraClear Case StudyEdge VR Design

• Makes use of both virtual routers and VRFs

Default virtual router
Management access only
National ISP peering
GE VLAN
Local IX peering (subset of routes)
Corporate Internet Access
ATM
Customer access (full routes)
ISP wholesale access
PPPoE
Wholesale ISP access (full routes)
Multiple accessTypes
MPLS VPN virtual router
Separation from Internet VRs
5
Telstra RDN Case StudyBackground

• Use RFC2547bis to consolidate multiple IP
  networks onto single core network
• Significant cost savings routers, bandwidth,
  operations..
• First VPN is Telstras own corporate network
• Unisphere recently selected as the edge router
  (PE) for the RDN 2547 VPN network
• Interoperability with Cisco GSR core routers and
  other PEs
• Use of LDP DU, core interworking with TDP

6
Telstra RDN Case StudyNetwork Overview
Nationwide MPLS Router BackbonePoS
Cisco GSR (P)
GigE MPLS
LDP DU
Single RDN MPLS VPN Core Network
Unisphere ERX (P / PE)

GigE VLANs
Multiple national Telstra IP networks
Telstra Network4
Telstra Network3
Telstra Network1
Telstra Network2
.
7
Futures - MPLS Deployment Trends for 2002

• Consolidate BRAS access directly into MPLS VPN
  infrastructure IP-SEC, L2TP, PPPoX, GRE etc
• Integration of layer 2 MPLS services onto common
  IP-VPN edge infrastructure
• Draft-martini / draft-kompella etc
• Legacy service migration
• Ethernet VLAN services
• Multicast over MPLS
• Multiple methods, including VR-VR tunneling
• Inter-carrier MPLS
• Inter-AS, carriers carrier etc
• Enhanced QoS in MPLS VPNs