2 Target for BSTU4 features Extend and optimize the features of 4 portlayer 2 switch compared with STU4 accordingto the demands and needs of ULAF+ customersEnable the flexible application for variousEthernet services without external switchEnable the realization of Ethernet services viaTDM and packet data backbone networks withstate-of-the-art configuration and maintenanceusing QoS and CoS according to IEEE standards
3 BSTU4: New features compared with STU4 VLAN Support(up to 16 VLANs)VLAN Termination+ Q-in-QQoSIntegrated intoULAF+V5.0STU44 ports L2 switchVLAN transparentLink aggregation4, 8 or 16 wire pairs scalableEmbedded ClockOperationSupport of BSRUPort prioritizationBSTU4
4 Individually configurable BSTU4: 4 port L2-switchIndividually configurable10/100BaseTX ports IEEE 802.3u(using LCT or AccessIntegratorEM ULAF+)Plug-in: 3 ports at the frontand one connected to thebackplane of ULAF+ V5.0 subrackDesktop: 4 portsPorts can be individuallydeactivated to save power inremote powered locations10BaseT/100BaseTXFull- / half duplex operation;Auto negotiatingLink Failure Propagation (LFP)Flow control (pause frames or backpressure)Automatic MDI / MDI-X crossoverVLAN and QoS supportedHandling of oversized frames upto 2000 bytesLink Aggregation (IEEE 802.3ad)Self-learning switch (1024 MACaddressesIngress Rate LimitingBroadcast Storm ProtectionVLAN IEEE 802.1Q supportProvider VLAN IEEE 802.1ad16 simultaneous active VLAN
5 Priority Queues Quality of Service 4 priority queues Transmit Queue Algorithms :“Weighted Fairness Queuing” (WFQ)“Strict Priority Queuing” (SP)PrioritizationBased on portBased on IEEE 802.1pBased on DSCPBased on VLAN ID5
6 Applications (1): STU4 versus BSTU4 C-VLANC-VLANSHDSL or networkconnectionsBSTU4BSTU4C-VLANC-VLANQoS-- Based on port- Based on IEEE 802.1p-- Based on DSCP-- Based on VLAN ID: External switchC-VLAN: Customer Virtual LAN6
7 Applications (2): Point-to-point connections 10/100BaseTx10/100BaseTxC-VLANAC-VLANABSTU4BSTU4SHDSL via 1…4 wire pairsC-VLANBC-VLANBVoIP-Classify ingress frames (QoS)based on Port / 802.1p / DSCP/VLANLimit bandwidthVoIP7
8 Applications (3): Connections via TDM based backbone network C-VLANAC-VLANABSTU4TDM NetworkBSTU4QSTUQSTUC-VLANBC-LANBVoIP-Classify ingress frames (QoS)based on Port / 802.1p / DSCP/VLANLimit bandwidthVoIP8
10 BSTU4 plug-in version with direct access to backplane of ULAF+ V5.0 Integration in ULAF+ V5BSTU4 plug-in version with directaccess to backplane of ULAF+ V5.0subrack (S3105-B628-A210)No Ethernet cabling necessary10
11 Applications in ULAF+ V5 using BSTU4 plug-in C-VLAN APacket NetworkGbE uplink(optical or copper)ULAF+ V5 subrack*BSTU4WANBSTU4 plug-inBSTU4 plug-inC-VLAN B*S3105-B628-A21011
12 MCS Comparison with another copper bonding schemes *) Not yet implemented in ULAF+ systems. Can be implemented on customer request.
13 MCS Multi Channel Synchronisation Bundling of 2..4 channels over transparent or structured TDM networksResiliencyIndependent Rx- and Tx- data streamsNetwork delta delay compensationMinimised additional delay caused by MCS (< 100µs)Autonomous detection and correction of wire pair or channel interchangeProprietary and patented inverse multiplexing algorithm
14 Embedded clock operation BSTU desktop units are equipped with 2,048MHz clock input/output interface(BNC 75 Ohm). High quality clock can be provided to the remote location usnig synchronous SHDSL transmission.ULAF+ subrack2,048MHz clock inpute.g.from SDHMobile network BTS / NodeBBSTU4 (RT)SHDSL via 1…4 wire pairsTiming outputBSTU4 COT2,048MHz clock inputBSTU4 (RT)SHDSL via 1…4 wire pairsTiming outputBSTU4 (COT)
15 BSTU4 scalability 2x 4 wire pairs with Link Aggregation, up to 45,6Mbit/s BSTU BSRU BSRU BSTU4LTNT11P122P111P222P2LTNT11P122P11122…4
16 BSTU4 DSLAM Backhaul with Link Aggregation Σ=91,2Mbit/se.g. DSLAMBSTU4BSTU422.8MBit/sBSTU4BSTU422.8MBit/sIncoming Packets withdifferent MAC addressesBSTU4BSTU422.8MBit/sBSTU4BSTU4Metro Ethernet Network22.8MBit/sLink Aggregation (IEEE 802.3ad)Ethernet Frames are distributed among different links (based on MAC-Addresses)Up to 91,2Mbit/s over up to 16 wire pairs can be aggregatedEasy to set-up and configure with Ulaf+ LCT or AccessIntegrator
17 Your contact Sales Siemens Switzerland Ltd. International Sales EIP A Albisriederstrasse 245CH-8047 ZurichTel.:Fax:homepage:
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