Avici TSR – An overview “True scalable routing” Ides Vanneuville Systems Engineer - EMEA Avici Company Confidential Architecture for the 21 st Century Network
Agenda n n n Introduction Next (best) generation networking Software features Hardware features Summary Best generation networking
Who is Avici ? n Founded: 1996 Billerica, MA n Mission: To market scalable core routers that delivers service providers reduced capital and operational expenditures and simplified operations without service disruptions n Public Company (Nasdaq AVCI), $ 240 million raised n 400 + employees worldwide, 11 in Europe n Gained market share (in last 12 months) n 2% in core router market (+1 G links) n 6. 5% in core router market (10 G links) Best generation networking
Next generation network Avici Optical Core Avici Provider IP Core (P) Provider Edge (PE) Customer Premise Equipment (CE) Best generation networking
Software features Avici Company Confidential Architecture for the 21 st Century Network
About IPriori n Unicast Routing n Fully featured BGP-4 Implementation – Confederates, Route Reflectors, damping, policy, Route Redistribution, Aggregation, dynamic configuration, peer security n IGP Support n IS-IS – Level 1 and 2 support, Route Redistribution, Database overflow support, passive interface support n OSPF – Stub Area support, Virtual links, Router Summarization, Passive Interface support, Route Redistribution n Multicast Routing n n PIM Sparse Intermediate Point PIM Dense/Sparse, Auto-RP, MSDP, MBGP for mcast NLRI Best generation networking
Easy Migration - Industry CLI server-id 2 upper hostname bay_TWO_UPPER_server system-password 7 S 9 b. QQdb 9 Sd interface Loopback 0 ip address 6. 6. 6. 1 255. 0 no shutdown interface Ethernet 0 ip address 10. 5. 222. 1 255. 0. 0 no shutdown module 1/15 4 xoc 3 c no shutdown interface pos 1/15/1 ip address 1. 1 255. 0 crc 16 no keepalive sonet scramble-atm no shutdown module 1/17 1 xoc 48 c no shutdown interface pos 1/17/1 clock source internal ip address 10. 6. 222. 7. 1 255. 0. 0 no keepalive sonet scramble-atm no shutdown router ospf 100 network 10. 10. 0. 0. 255 area 0. 0 router bgp 4293 bgp router-id 1. 1 bgp dampening route-map 1 redistribute connected route-map connected-bgp redistribute static route-map static-bgp neighbor ebgp peer-group neighbor ebgp send-community neighbor 3. 1. 1. 2 remote-as 200 neighbor 3. 1. 1. 2 peer-group ebgp neighbor 3. 1. 1. 2 timers 6 neighbor ibgp peer-group neighbor ibgp remote-as 4293 neighbor ibgp send-community neighbor ibgp route-map IBGPMAP out neighbor 1. 1. 1. 2 remote-as 4293 neighbor 1. 1. 1. 2 next-hop-self neighbor 1. 1. 1. 2 route-reflector-client neighbor 1. 1. 1. 2 timers 180 neighbor 2. 1. 1. 2 remote-as 4293 neighbor 2. 1. 1. 2 next-hop-self neighbor 2. 1. 1. 2 route-reflector-client neighbor 2. 1. 1. 2 send-community neighbor 2. 1. 1. 2 timers 180 neighbor 2. 1. 1. 2 route-map IBGPMAP out neighbor 10. 10. 2 remote-as 100 neighbor 10. 10. 2 timers 180 Best generation networking ip route 5. 5. 5. 0 255. 0 null 0 ip community-list 1 deny 45940756 ip community-list 1 deny 46071828 ip community-list 1 deny 46006292 ip as-path access-list 1 permit ^$ ip as-path access-list 100 deny _1_ ip as-path access-list 101 permit _65010_ ip as-path access-list 286 permit _286_ ip as-path access-list 286 permit _3561_ ip as-path access-list 286 permit _701_ route-map EBGPMAP permit 10 set local-preference 25 set metric 150 route-map IBGPMAP deny 10 match as-path 100 286 route-map IBGPMAP permit 20 set community 45940837 set local-preference 80 set metric 10 route-map connected-bgp permit 10 set community 45940847 set origin igp route-map static-bgp permit 10 set community 45940848 set origin igp bay 1/1 logging console platform all system bgp end
Management and Security n SNMP n n System event log for all events n n n Dual Servers can be deployed for additional redundancy Traffic separation n n Protocol activity (tracing) Local and remote SYSLOG Log all CLI commands Standby Route Servers n n Standard and vendor-specific MIBS RMON Events and Alarms Group 64 bit counters All For. Me traffic is classified into 24 application-specific queues serviced by WRR to avoid starvation of control traffic and ensure against Do. S attack Configurable for For. Me Traffic Filters Security n n TACACS+ Secure Shell Best generation networking
Network and Traffic Engineering n n n n n Leverage emerging D-WDM Technology Get ahead of the serial bandwidth curve Stabilize topology Enable Rapid Provisioning Simplify the IP routing mesh Provide Protection options Provide TE network for the transport of Diff-serv traffic Enable Circuit Emulation/Private Line Service Enable 45 ms restoration Best generation networking
Composite Links n OC-48 c 10 G OC-48 c v. OC 192 OC-48 c n n n ! interface pos 2/29/1 no ip address no keepalive sonet scramble-atm no shutdown ! interface composite-link TSR 1_CL ip address 100. 1 255. 0 peer default ip address 100. 2 member-link POS 1/22/1 member-link POS 1/37/1 member-link POS 1/39/1 member-link POS 2/29/1 no shutdown n n Combines up to 64 physical connections to a single logical connection Removes serial bandwidth limitations Granular bandwidth scaling 4 -1 speed mismatch Preserves packet sequence Add/remove trunks dynamically Recovery in 45 ms Compartmentalizes link failure Routing table stability Best generation networking
Composite Links & intelligent optics n Composite Link 4 3λ TSR monitors load on composite links n If total premium traffic exceeds a limit, shifts ports from other links Optical Switches Composite Link 3 4λ • TSR signals optical switch to reassign wavelength to high traffic link • Dynamic reallocation of total network Label Switch Router Demonstrated interoperability Best generation networking
Super. COM 2001 demo Best generation networking
MPLS Traffic Engineering n Ingress, Midpoint, and Egress n n n n n Penultimate Hop Popping is NOT mandatory Ingress behavior allows unparalleled tunnel scaling Constraint Based Routing with Avici enhancements Enhanced RSVP signaling for Label Distribution Enhanced OSPF and IS-IS to support TE LDP End to end TE instrumentation for network mngt Tight Integration with Composite Links Hardware label switching on OC-3, OC-12, OC-48, OC-192 and Gigabit Ethernet Best generation networking
Traffic Engineering Router K's Next Hop For Routes in ISP 1 EGRESS LSR B INGRESS LSR Incoming Transit Traffic A I BGP Backbone Provider Shortest Path to ISPs 1, 2, 3, and 4 Subscriber ISP 1 K Router E's Next Hop For Routes in ISP 2 el 1 unn ut T rt C Sho E C Short Cut T unnel 2 G D F Subscriber ISP 4 BGP Router G's Next Hop For Routes in ISP 3 EGRESS BGP LSR M Best generation networking J Subscriber ISP 2 H Router G's Next Hop For Routes in ISP 4 Subscriber ISP 3
Optimized Path Layout n Intelligent MPLS Reflood Timing n n Resilience Optimization n n Improve responsiveness of Ingress path layout Recover from MPLS failures with minimal impact to core topology Adaptivity Optimization n n Take full advantage of positive changes in the core topology Rebuild LSPs, ordered by required bandwidth 5 0% loaded, 600 sec D 200 sec TE Reflood Timing 4 50% loaded, 180 sec C 100 sec 3 15 sec B 2 95% loaded, 10 sec A 5 sec T=0 90% loaded, 20 sec Percentage of link loading Best generation networking 1 99% loaded, 3 sec
Integration with Composite Trunks Compose Trunk Subnet 1 Subnet 2 Higher Pre-emption value affects tunnel reroute Re-route time affected by reservable bandwidth attribute Best generation networking
MPLS Fast-Reroute Protection Router switches traffic to pre-configured backup n Allows identification of which traffic to protect n Traffic switched to backup and traffic normally on link contend for resources using Qo. S – no traffic is discarded if link is not over-utilized n Works for POS and gigabit Ethernet Best generation networking
MPLS Fast-Reroute Drafts n n n draft-atlas-rsvp-local-protect-interop-01. txt (Avici) draft-swallow-rsvp-bypass-label-01. txt (Cisco) draft-gan-fast-reroute-00. txt (Juniper) Best generation networking
VPN Support: RFC 2547 n VPN-P Support n n n Support for Multi-Protocol Extensions to BGP-4 to support route-distinguisher Compatible with Cisco, Juniper, Unisphere, Riverstone, Alcatel, etc. Traffic Engineering/VPN tunnel integration n Provide a TE core for Virtual Private Networks Peering Node Avici TSR Optical Switch Avici TSR Customer PE Node Avici TSR Customer Peering Node Customer PE Node Optical Switch Avici TSR Customer Peering Node Customer Best generation networking
Qo. S Functional Summary n n n n Combination of WFQ, WRR, WRED and GPRA (CBR) Programmable ASIC Pipeline Multiple hierarchy of Algorithms Many iterations per algorithm implemented Minimum packet data handling Functionality increased for Multiservice module Counters maintained per interface, VC, class traffic management and accounting information Best generation networking
Qo. S Treatment per node 8 ss la C ue s ue p er lic Po REG PR up ro G BE er ap Sh ED R ss la C 2 51 8 Best generation networking r e ap Sh Direct Connect Fabric Q er ic br Fa ifi er ic ss la C l Po u ro G CTL
MPLS TE/Composite Trunks/Qo. S WRED discards tunnel two or hop-by-hop traffic during tunnel reroute Compose Trunk Subnet 1 Subnet 2 Qo. S operates on Diff-serv inferred MPLS exp marking Best generation networking
Traffic Engineering with Qo. S n Enables no-loss, low delay variance, low latency services n n n n Virtual Leased Line Voice over IP Storage Area Networks Add new properties to Service Level Agreements Improve reliability at reduced cost Deliver protection appropriate for each service, up-to SONET APS levels Improve utilization in network backbone Best generation networking
Hardware features Avici Company Confidential Architecture for the 21 st Century Network
The Avici Systems TSR • Carrier class features • Carrier class design • Unprecedented scaling • Future proof Best generation networking
Patent-pending Velociti™ Fabric n n n Toroidal direct connect fabric Scales to 560 active modules Each element adds switching & forwarding capacity n n Generation 1 - 60 Gbps Generation 2 - 240 Gbps Each module connects to 6 other modules Path diversity through fabric n n Resilient Non-blocking Best generation networking
Growing the TSR System n Expanding the interconnect n Two physical backplanes in each bay n n Power Distribution n n Connected top-to-bottom Connected side-to-side Connected over-the-top -48 VDC 60 A per shelf redundant feed Environment Controllers n Two per bay interconnected between bays Best generation networking
Avici Product Scalability 1 TSR 400 Gbps 4 TSR Bay 1600 Gbps 2 TSR 800 Gbps 1 SSR 200 Gbps SSR/TSR 600 Gbps 2 SSR 400 Gbps Best generation networking 6 TSR Bay 2. 4 Tbps
TSR™ Interface Modules n Packet over SONET/SDH n n n n Ethernet n n n Best generation networking Concurrent IP and MPLS 1 port OC-192 c/STM-64 1 port OC 48 c/STM-16 2 port OC 48 c/STM-16 4 port OC 12 c/STM-4 4 port OC 3 c/STM-1 16 port OC 3 c/STM-1 2 port Gb. E 8 port Gb. E Q 2/02 10 Gb. E 2 H/02
Module I/O Architecture Forwarding Engine Control Processor FE Interface Multicast Expander & Packet Scheduler Packet Memory 64 MB E/O Conversion SONET Termination PPP/MPLS Processing Packet Qo. S Best generation networking BACKPLANE PPP/MPLS Processing Fabric SONET Termination Switch O/E Conversion
Software & System Architecture OSPF BGP 4 IS-IS SNMP MSDP MBGP PIM FTP RSVP CLI Server Memory 580 Mb Server Memory 320 Mb Power. PC Processor SSD HDD PCMCIA Fast Ethernet PCMCIA Control Processor FE Interface Console Switch Fabric Multicast O/E SONET PPP/MPLS Forwarding Expander & Multicast Conversion Termination Processing Engine O/E SONET PPP/MPLS Forwarding Packet Expander & Multicast Conversion Termination Processing Engine O/E SONET PPP/MPLS Forwarding Scheduler Packet Expander & Conversion Termination Processing Engine Scheduler Packet Control Processor Scheduler FE Interface Control Processor E/O Server Interconnect. Packet SONET PPP/MPLS Packet Memory Conversion Qo. S Termination Processing E/O Packet SONET PPP/MPLS Conversion Qo. S Termination Processing 64 Mb E/O Packet SONET PPP/MPLS Conversion Qo. S Termination Processing Module Control Software Routing and Configuration tasks Best generation networking Forwarding and Fabric Routing tasks Bay & & Environment Bay Environment Controller
Field proven operation n n First systems deployed in NTON (DARPA Supercomputer research network) Operational in the Internet in May 1999 (BGP) Currently deployed in one of the worlds largest carrier IP networks Support OC-192 links Operating as BGP Route Reflector in one of the worlds largest RR configurations Best generation networking
AT&T network Best generation networking
Summary Avici Company Confidential Architecture for the 21 st Century Network
Summary - Carrier imperatives n Cost n n Velocity n n Lower the cost of building and operating the network Decrease the time to add or change services Profit n Deliver value added services and quality of service enhancements Best generation networking
Lower Operational Costs Backbone Interfaces VS. High Speed (Optical) Low Speed (electrical) IP Transit IP VPN / Low Speed Transit Low Speed (electrical) High Speed (Optical) Customer Facing Interfaces Current best practice Best generation networking Customer Facing Interfaces Avici alternative
Provisioning - Months to Minutes 10λ 14λ 6λ n n n Backbone capacity increased without truck-rolls Market share not impacted by provisioning Immediate provisioning for all bandwidth products up-to physical network capacity Immediate fulfillment of customer demands Best generation networking
Velocity – Composite Links n n n Avoid hitting the transmission capacity wall Backbone links with 64 times the capacity of our competitor on the same transmission network No impact to customer or network stability Backbone Capacity added in days not months Best generation networking
Profit n n n Use IP core for converging all services Scale services past competitors offerings Spend your time creating new services… n n Make €€€€ at the edge of the network Save €€€€ at the core of the network Best generation networking
Conclusion n Next generation public network switch n n n Scalability Non-stop system and software architecture Quality of Service Network and Traffic Engineering Benefits n n n Reduce capital costs Stable service velocity Increased equipment life cycle Faster, stable network expansion & dramatic reduction in cost per bit delivered Best generation networking
Thank You Avici Company Confidential Architecture for the 21 st Century Network
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