TEQUILA Engineering Approach

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Felix Lester
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1 TEQUILA Approach David Griffin University College London, UK Premium IP Cluster Joint Review, 3-4 April 2001

2 Overview

3 Service Subscription GUI Forecast Service Subscription LDAP Service Subscriptions Repository Service Service Invocation Service Invocation Invocation LDAP Location and Repository

4 Network Dimensioning GUI Dynamic Dynamic Route Route Dynamic Route Dynamic Dynamic Resource Dynamic Resource Resource LDAP Network Topology and Resource Repository

5 Dynamic Route Network Dimensioning IP Dynamic Dynamic Resource Dynamic Resource Resource GUI LDAP Network Topology and Resource Repository

6 Network GUI Node Node Node SQL Repository

7 Tool LDAP Storing Service LDAP Consumer Consumer Consumer Target (TE and M components)

8 Service Subscription Applications Applications Applications API QoS Request Utility DSCP-marked packets

9 Generic Adaptation Layer Generic Generic Adaptation Adaptation Layer Layer PC-based PC-based PC-based IFT-based IFT (IP (IP Fast Experimental Fast Translator) Translator) (IP Fast Translator)

10 Generic Adaptation Layer Generic Generic Adaptation Adaptation Layer Layer PC-based PC-based PC-based IFT-based IFT (IP (IP Fast Experimental Fast Translator) Translator) (IP Fast Translator)

11 Generic Adaptation Layer Functional Model Tequila System SIM IP-TEM DRtM DRsM Node Generic Adaptation Layer Conditioning PHB Enforcement MPLS Signalling IP Routing Signalling Network Element Classification Conditioning Scheduling Buffer IP Routing Forwarding Signalling

12 Generic Adaptation Layer Architecture Tequila System SIM IP-TEM DRtM DRsM Node COPS Generic Adaptation Layer Interface Sub-Layer Interface Driver Sub-Layer Driver Interface Module Driver IFT Driver kernel sockets, RAPI SNMP, CLI RPC Network Element Enhancements Enhancements IFT

13 Generic Adaptation Layer Generic Generic Adaptation Adaptation Layer Layer PC-based PC-based PC-based IFT-based IFT (IP (IP Fast Experimental Fast Translator) Translator) (IP Fast Translator)

14 DiffServ enhancements DiffServ over MPLS DSCP based classification and marking (DONE) MPLS signaling: for Interoperability and NE s (to be done) Merged and BSD daemons Explicit Route and MPLS signaling support (DONE) Enhancements to support DiffServ signaling (DONE) Diffserv over MPLS forwarding Based on existing MPLS best effort only code Added DiffServ support (DONE) Added multiple routing table support (DONE) Added packet and byte counters at LSP level (DONE)

15 enhancements IP IP TE-capable routers Support for RFC2370 and TE extensions for OSPF Use of existing routing daemon PDP: IP Manager PEP: IP TE-capable router Use of existing source code

16 Generic Adaptation Layer Generic Generic Adaptation Adaptation Layer Layer PC-based PC-based PC-based IFT-based IFT (IP (IP Fast Experimental Fast Translator) Translator) (IP Fast Translator)

17 IFT Experimental Hardware-based classification and forwarding speeds up TEQUILA experimental routers Using IP Fast Translator from FTR&D

18 IFT Enhancements MPLS capabilities: Push, pop and swap operations on two levels of labels EXP field tagging TTL update (LSR) and TTL exchanges between IP and MPLS layers (LER) Use of the LLC/SNAP header instead of 2 levels of MPLS headers at the LER egress Multi-path forwarding: Based upon a SA/DA hashing mechanism enhancements: Migration of the control memory driver to

19 Network topology generator TEQUILA Approach: Simulator Integration of TEQUILA intra-domain TE functions with the Network Simulator (NS) consumer (PDP) file Network file Dimensioning/ IP-TEM Tcl Tcl script script Tcl script file Run-time Tcl script Tcl script generation profiles Tcl script Log/trace file file TEQUILA enhancements DRtM/ IP-TEM DRsM MPLS/DS integration DSCP-aware routing LSP/PHB configuration NS core TEQUILA-enhanced NS Script editor/ experimenter

Simulator Inter-domain s with OPNET Implementation of QoS-enhanced BGP peers exchange QoS information in addition to topological data delay, bandwidth, TOS byte

20 Simulator Inter-domain s with OPNET Implementation of QoS-enhanced BGP peers exchange QoS information in addition to topological data delay, bandwidth, TOS byte info, etc. Exchange of information described in IETF drafts: draft-jacquenet-qos-nlri- 02 draft-jacquenet-qos-extbgp-00.txt BGP peers run a modified route decision process

21 Bulk Service Request Generator Forecasts (to ND) Service Subscriptions Service Invocations Smartbits Interface Driver NS Interface Driver OPNET Interface Driver Smartbits Generator NS Generation OPNET Generation

22 Summary

23 Summary Eight sub-systems, 32 components Deploys TEQUILA algorithms and protocols (c.f. D.1.1, D1.2) Additional infrastructure: e.g. customer, testing sub-systems System spans from low-level router enhancements through traffic engineering systems to service and policy management solutions Design complete, implementation now underway Incremental roll-out of system releases 4 major releases: April 01, July 01, Sept 01, Feb 02 Deployment in TEQUILA testbeds and in simulation environments

24 Demonstrations Two demonstrations to follow: Service Negotiation Live demo of negotiation between Service Subscription and Service Subscription components Enhancements for DiffServ over MPLS Slide show of screenshots from demonstration at IMEC, November node testbed of enhanced -based PC routers + Smartbits traffic generation and analysis

6 MPLS Model User Guide

6 MPLS Model User Guide Multi-Protocol Label Switching (MPLS) is a multi-layer switching technology that uses labels to determine how packets are forwarded through a network. The first part of this document