Information Data Reliability With The XGbE WAN PHY

Transcription

1 Information Data Reliability With The XGbE WAN PHY Roy Bynum MCI WorldCom January 17, HSSG (P802.3ae) 1

2 GbE: Native IP Over Transport 95% of IP Data originates on GbE is direct GbE is more reliable than Packet Over SONET (POS) Lower Data Loss: >1% Vs. ~3% Faster Traffic : ~1.5ms Vs. ~500ms (A proprietary version of POS: ~2ms) Active Subscription Control: Bandwidth reduction = slower data transfer GbE: no data loss because of 801.d POS: data loss and retransmission January 17, HSSG (P802.3ae) 2

3 Data Technology Evaluation Lab L2 es: Store & Forward and Cut Through L2 / IP L3 es: RIP/OSPF/BGP Routing IP Routers: Legacy RIP/OSPF/BGP POS Routing L3 es: High Speed OSPF/BGP POS Routing ATM: IP/LANe Over ATM PVCs/SVCs Data Generation/Analysis: /IP/UDP,TCP - POS/IP/UDP,TCP Transport: Active DWDM, es, Over SONET, Standard SONET OC3/OC12/ OC48/OC192 January 17, HSSG (P802.3ae) 3

4 Evaluation Test Configurations: Data Loss: Traffic After /SONET Network Data Loss: Traffic Characteristics During Overload/ Bandwidth Constraint Conditions Differentiated Services: Priority Queuing Over Constrained Network Links Service Reliability: Link Aggregation To Prevent IP Convergence Virtual Segmentation: Simplified Routing Over Mesh Circuit Networks January 17, HSSG (P802.3ae) 4

5 Test Configuration To Evaluate Traffic Over Active Network Data Generation Test Set Test Data Generation System Running Packet Loss Test Full Duplex 100BT Data Devices Under Test Full Duplex Gigabit Ethernet Working Channel Metro DWDM with Protection ing or OCCS System Protection Channel January 17, HSSG (P802.3ae) 5

6 Test Configuration To Evaluate Traffic Subscription Control By Means Of Flow Control Over Active Network Full Duplex 100BT Test Data Generation Systems Running Packet Loss Test With active flow control responce Full Duplex Gigabit Ethernet Working Channel Protection Channel Data Devices Under Test January 17, HSSG (P802.3ae) 6

7 Test Configuration To Evaluate Differentiated Services By Means Of Priority Queuing Over Active Network Full Duplex 100BT Test Data Generation Systems Running Packet Loss Test Configured as high priority traffic With active flow control responce Full Duplex 100BT Test Data Generation Systems Running Packet Loss Test Configured as low priority traffic With active flow control responce Full Duplex Gigabit Ethernet Working Channel Protection Channel Data Devices Under Test January 17, HSSG (P802.3ae) 7

8 Test Configuration To Evaluate Traffic Over Active Network Using 4X Diverse Aggregated Links Full Duplex 100BT Test Data Generation Systems Running Packet Loss Test Configured as high priority traffic With active flow control responce Full Duplex 100BT Test Data Generation Systems Running Packet Loss Test Configured as low priority traffic With active flow control responce Full Duplex Gigabit Ethernet Data Devices Under Test January 17, HSSG (P802.3ae) 8

9 Test Configuration To Evaluate Virtual Segmentation Intranet Logical Virtual Segments Intranet Internet Logical Virtual Segments January 17, HSSG (P802.3ae) 9

10 IP Over DWDM Networking Protocol Stack Internet Protocol (IP) Point-to- Point Protocol (PPP) TDM (DS3/ DS1/DS0) MPLS HDLC/PPP Packet Over SONET/SDH (POS) SAR LLC2 ATM MPLS Ethernet Over SONET/SDH (EOS) (10GbE) Unknown MPLS Ethernet Over (Gigabit Ethernet) (GbE) Native Data (ESCON FICON ETC.) SONET/SDH Digital Wrapper 8B/10B Wavelengths (DWDM) (OCCS) Traditional Telepony Private Line Packet Over SONET ATM LANe Transparent LAN Service Native LAN Extension /Transport Native Transport January 17, HSSG (P802.3ae) 10

11 POS Traffic Is Limited By Multiple s Of Handshaking Fiber Cut Application Data Transmission Actual Application Traffic Time is Dependant on the of ALL of the Other s ~ 500ms to Seconds Trans. & Session Setup Handshake Restored IP Applications Data Traffic Restored TCP Network Data Link Physical Signalling es SONET Traffic Time ( + 375us) Time <50ms HDLC/PPP Link Setup Handshake Restored SONET Restored Signalling IP Path Setup Handshake Restored IP Restored HDLC/PPP Signal ed to Protection Fiber by OCCS January 17, HSSG (P802.3ae) 11

12 GbE Traffic Indicative Of Native Data Fiber Cut Application Data Actual Application Traffic Time is Dependent on the of ALL of the Other s ~ 2-20ms over time Restored IP Applications Data Traffic Transmission Network Data Link Physical Signaling es 8B10B Signaling Time ( + ~600us) Time <50ms Trans. & Session Setup Handshake IP Path Setup Handshake Ethernet Logical Link Control Recovery ~ < 600us after 8B10B Recovery 8B10B Encoding Signaling Restored Signaling Restored IP Restored Ethernet Restored TCP Signal ed to Protection Fiber by OCCS January 17, HSSG (P802.3ae) 12

13 P802.3ae WAN PHY Traffic Fiber Cut Can Be As Little As 625us Application Data Actual Application Traffic Time is Dependent on the of ALL of the Other s ~ 1-20ms over time Restored IP Applications Data Traffic Transmission Trans. & Session Setup Handshake Restored TCP Network Data Link Physical Signaling es SONET/SDH Frame Signaling Time ( + ~375us) Time <50ms IP Path Setup Handshake Ethernet Logical Link Control Recovery ~ 250us after SONET Recovery Restored Signaling Restored IP Restored P802.3ae Ethernet Restored SONET/SDH Framing Signaling Signal ed to Protection Fiber by OCCS January 17, HSSG (P802.3ae) 13

14 XGbE (P802.3ae) Will Be The Most Reliable WAN Protocol To Date XGbE WAN Will Provide: Very Fast Traffic Times Direct Linkage To SONET/ Bandwidth Overload Protection Through Active Flow Control Deterministic Latency And Differentiated Services Through Priority Queuing Fault Tolerance and Resiliency Through Link Aggregation Simplicity Of Routing Configuration Through Virtual Segmentation January 17, HSSG (P802.3ae) 14