pc router

What a router search tool for PC? The router is a PC tool for research of new routing algorithms. The basic idea is to use a dual processor computer system to facilitate the development of router code. A processor running Unix and the other is dedicated to routing processors. This application is based on FreeBSD and uses the Intel Pro 100 / B network cards. The router runs a processor polling loop a list of devices to see if there is work to be done. He argues in the driver code and minor changes to the startup code and TCP / IP code. The protocols are not changed, only the code that runs on the processor. Design News - Workflow packages There are several streams of packets to be examined. The simplest way to understand the flow of packets routed a packet arrives on an interface, its destination is searched in the routing table, and he sent an interface. Slight variations on this are * A package arrives processor designed for unix * A packet is generated by the processor unix * One packet of the destination is not in the routing table in the case of the release of locally generated packets, the router sends to the processor interface. In the case of premises for the package, the router processing queues between the processor and unix processor sends an interrupt to the processor unix. In the case of unroutable packet, the router processor queues in unix processor sends an interruption between processor and allows the full code in the unix routing processor to process the packet. More Info Design - Buffer Management At startup, each interface has several mbufs assigned to him. Each mbuf is marked with the ID of the interface to which it belongs. First, a mbuf is configured to receive data on an interface. When it is full, it is queued for other sub-systems for further treatment and probably enqueued on an interface for transmission. When the transmission is completed, the mbuf is returned to the original owner interface. What are the hard parts? Conceptual tool that is easy to conceive. The challenges are * Understanding Intel I / O APIC Architecture, which describes how interrupts are handled. * The figures that some of the interruptions were losing inter processor * Noting that the version of FreeBSD that I had considered using some of my equipment thugs and did not program the clock who resembled the console system was not working. Fortunately, FreeBSD has versions of the correction and I could easily catch up to him. * Realizing that I had to be careful with MBUF majorly flags. * The figures that the processor is interrupted between the code does not save all registers. What remains to be done? * Measure the throughput and latency of the existing system upgrade * (Intel) driver to support the current Intel * Updated maps to a more recent version of FreeBSD * Add more drivers

What is a PC-router search?
The router is a PC tool to design new routing algorithms. The basic idea is to use a bi-processor PC system to the development of entry of the router. A processor running Unix and the other is dedicated to routing processors. This version is based on FreeBSD and uses the Intel Pro 100 / B of the network. The router runs a processor polling loop a list of devices to see if there is work to be done. There is support in the driver code and small changes in startup code and TCP / IP code. The protocols are not changed, only the code is executed on the processor.
Design News - Flow Packet
There are multiple streams of packets to be examined. The easiest to understand flow routed package: a package arrives on an interface, the destination is considered in the routing table, and sent a single interface. Small variations are

* A package that happens is for the treatment of Unix
* A package is generated by the processor Unix
* A package of destination is not in the routing table

In the case of outgoing packets generated locally, the processor in the router sends to the appropriate interface. In the case of the destination of the packets at the local level, the router CPU processing queues in unix and sends an inter-processor interrupt to the processor Unix. In the case of unroutable packet, the router processor queues in unix processor sends an inter-processor interrupt, and all the routing code in the Unix processor processing package.
More Info Design - Buffer Management
At startup, each interface has its mbufs affected. Each mbuf is encoded with the ID of the interface to which it belongs. First, a mbuf is to obtain data on an interface. If it is full, the queue for the other subsystems for further processing and probably enqueued on an interface for transmission. When the transfer is complete, the mbuf is returned to the interface that the owner was at the origin.
What are the hard parts?
Conceptual tool that is easy to conceive. The challenges are

* Understand the Intel I / O APIC Architecture, which explains how to manage interruptions.
* Know that some of the interruptions between processor are lost
* Realize that the version of FreeBSD, I planned to use part of my equipment to rogue states and the program is not the clock, which has appeared on the system console is not working. Fortunately, new versions of FreeBSD had to correct and I could easily retrofit systems.
* Realize that I majorly MBUF with flags.
* Know that the processor is interrupted, the code does not save all registers.

What to do?

* Measure the throughput and latency of the system
* Upgrading the existing (Intel) driver to support the current Intel cards
* Upgrading to a newer version of FreeBSD
* Add more drivers
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We will use your suggestion to improve translation quality in future updates to our system. What is a PC-router search?
router is a PC tool to design new routing algorithms. The basic idea is to use a bi-processor PC system to the development of entry of the router. A processor running Unix and the other is dedicated to routing processors. This version is based on FreeBSD and uses the Intel Pro 100 / B of the network. The router runs a processor polling loop a list of devices to see if there is work to be done. There is support in the driver code and small changes in startup code and TCP / IP code. The protocols are not changed, only the code is executed on the processor. Design
Info - Workflow packages
There are multiple streams of packets to be examined. The easiest to understand flow routed package: a package arrives on an interface, the destination is considered in the routing table, and sent a single interface. Small variations are
* A package that happens is for the treatment of
Unix * A package is generated by the processor
Unix * A package of destination is not in the routing table
In the case of outgoing packets generated locally, the processor in the router sends to the appropriate interface. In the case of the destination of the packets at the local level, the router CPU processing queues in unix and sends an inter-processor interrupt to the processor Unix. In the case of unroutable packet, the router processor queues in unix processor sends an inter-processor interrupt, and all the routing code in the Unix processor processing package. More info
Design - Buffer Management
startup time, each interface has its mbufs assigned. Each mbuf is encoded with the ID of the interface to which it belongs. First, a mbuf is to obtain data on an interface. If it is full, the queue for the other subsystems for further processing and probably enqueued on an interface for transmission. When the transfer is complete, the mbuf is returned to the interface that the owner was at the origin.
What are the hard parts? Conceptual
this tool is simple to conceive. The challenges are
Understanding * Intel I / O APIC Architecture, which explains how to manage interruptions. * That some
between CPU interruptions are lost
* Understand that the version of FreeBSD, I planned to use part of my equipment to rogue states and the program is not the clock, which appeared on the console does not work. Fortunately, new versions of FreeBSD had to correct and I could easily retrofit systems. * Making
that I was majorly MBUF with flags. * What
processor interruption between the code does not save all registers.
What to do? *
measurement throughput and latency of the system
* Modernization of the existing (Intel) to support the pilot of Intel
* upgrade to a newer version of FreeBSD
* Add more drivers