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Ubiquitous Component Remoting Support on Overlay Network Adaptation support with Ontology-based annotation Roaming support of wireless component communication Switching support of component communication using network processors Streaming support of component communication for multimedia applications Transcoding support (On-going) Component Remoting Component Remoting Technology Map Technology Map Switching support of component communication using network processors Switching mechanism supports Remote Object Invocation, .Net Remoting and Java RMI. The switching mechanism is implemented on IXP1200. Porting the switching mechanism to IXP2400. Future work: Parsing header, transcoding Hardware comparison porting IXP1200 IXP2400 Platform Radisys ENP-2505 Radisys ENP-2611 Core StrongARM_232Mhz Xscale_600Mhz MicroEngine/thread 6/4 8/8 RAM size Scratchpad-4KB SRAM-8MB DRAM-128MB Scratchpad-16KB SRAM-8MB DRAM-256MB I/O 4 10/100 EtherNet Ports 3 Gigabit optical ports New feature Scratch Ring, Next Neighbor register Next Neighbor Register Two mode of NNR: Date can be read by next ME (ex. ME0:0 write data into a NNR, ME0:1 can read data from its NNR. ) Use as extra GPR NNR are useful when two pipeline stages are communicating. ME 0:0 ME 0:1 ME 0:2 ME 0:3 ME 1:2 ME 1:3 ME Cluster 0 ME 1:0 ME 1:1 ME Cluster 1 Behavior of Packet Receiving 64Byte 1. 2. 3. Divide packet into mpackets Store Mpackets into DRAM Gather metadata from Mpacket Metadata format dl_buf_handle //The current buffer containing SOP dl_eop_buf_handle // for large packets, the buffer containing EOP. input port // port from which the packet is rxed … … 0 64 149 DRAM SOP ScratchPad RAM Metadata of packet EOP Scratch Ring Scratchpad RAM SRAM Ring Descriptors 0 1 2 … 15 head tail base Size=128 Ring data … Size = 128 Blueprint Ingress: one thread to receive packets from one 100 Mbps Ethernet port Egress: a scheduler thread loads the packets from the packet queues of each port in round-robin fashion L2 Bridge: relays and filters frames L3 Forwarder: forwards packets based on a forwarding table Stack ACE: allows I/O to and from the TCP/IP stacks and ACEs Load Balancer: distributing requests to servers according to servers’ load StrongARM Linux TCP/IP Stack Ingress ACE L2 Bridge Stack ACE Load Balancer L3 Forwarder Egress ACE Resource Manager ME 1 L2 LB L3 LB L3 ME 2 ME 0 L2 Ingress Microcode ME 5 Egress Microcode ME 3 L2 LB L3 LB L3 ME 4 L2 New Blueprint for IXP2400(Microengine) Communication with Core components ME 1:1 Packet Scheduler Microcode ME 0:1 De-capsulate ME 0:0 Packet Rx Microcode ME 1:2 Forward Load-balancer ME 1:0 ME 0:2 De-capsulate Use Neighbor Register Forward Load-balancer Packet Tx Microcode Packet QM Microcode ME 1:3 Packet Tx Microcode ME 0:3 De-capsulate Forward Load-balancer Progress What is done Microcode New blueprint of switching mechanism on IXP2400 Todo Core component Performance measure