Ubiquitous Component Remoting Support on Overlay Network

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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)

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Component Remoting Technology Map
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(No Transcript)
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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

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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
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Next Neighbor Register

• Two mode of NNR
• Date can be read by next ME (ex. ME00 write data
  into a NNR, ME01 can read data from its NNR. )
• Use as extra GPR
• NNR are useful when two pipeline stages are
  communicating.

ME Cluster 0
ME 00
ME 01
ME 02
ME 03
ME Cluster 1
ME 10
ME 11
ME 12
ME 13
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Behavior of Packet Receiving
64Byte

1. Divide packet into mpackets
2. Store Mpackets into DRAM
3. Gather metadata from Mpacket

0
64
149
DRAM
SOP
EOP
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
ScratchPad RAM
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Scratch Ring
Scratchpad RAM
SRAM
Ring data Size 128

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Blueprint
StrongARM
Linux TCP/IP Stack
Stack ACE

• 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

Ingress ACE
L2 Bridge
Load Balancer
L3 Forwarder
Egress ACE
Resource Manager
ME 1
L2
LB
L3
ME 2
ME 0
ME 5
L2
LB
L3
Ingress Microcode
Egress Microcode
ME 3
L2
LB
L3
ME 4
L2
LB
L3
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New Blueprint for IXP2400(Microengine)
Communication with Core components
Use Neighbor Register
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Progress

• What is done
• Microcode
• New blueprint of switching mechanism on IXP2400
• Todo
• Core component
• Performance measure