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The AXC105 Fibre Switch

The AXC105 Fibre Switch. Hans Nilsson hans@erix.ericsson.se. This talk: the local node. Management. The access system. ISPs. Photos. Rack installation. Mounted on a wall with fibres to the users. The local node is basically an Ethernet Switch. Network processor Assembler PowerPC

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The AXC105 Fibre Switch

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  1. The AXC105 Fibre Switch Hans Nilsson hans@erix.ericsson.se

  2. This talk: the local node Management The access system ISPs

  3. Photos Rack installation Mounted on a wall with fibres to the users

  4. The local node is basically an Ethernet Switch • Network processor • Assembler • PowerPC • Linux • Erlang/OTP (35 k lines) • C (10 k lines) • Hardware • Another story…

  5. Ethernet Frames Ethernet Frames Network Processor What does what SNMP Telnet SSH … PowerPC • Erlang • C • Linux Tables, registers

  6. In Erlang: Resources • Everything manageable is a resource: • Ethernet Port • Bandwidth limitation • CPU • LED • Clock • Alarm • …

  7. Models HW and the function: • Ethernet port • Network processor • Vlan • Mezzanine board • Main board • Bandwidth limitation • … • User- and machine interfaces: • SNMP • CLI (Command Line Interface) over telnet • … • Independent of HW and function: • Error logger • Trace logger • Database • Alarm • … Generic Interface Resources Generic Resources Function Specific Resources ELN Resource System – example of Resources

  8. Generic Resources Generic Interface Resources Function Specific Resources SNMP Telnet/cli The Resource System etc Generic Resource System Development Support Application & HW Independent Parts HW_LIB NP_LIB Application Core Linux Drivers NP-SW HW Dependencies Hardware CPU NP

  9. Resources • The Resource System: • coordinates actions performed by the different resources • supervises the resources • provides an API • A Resource: • is started by the Resource System • performs actions at start-up (initiates registers, load code …) • execute orders sent to the resource (set, get, reset, call, check …) • Provides configuration data to the CLI (Commands)

  10. Good Linux: Much available out there Many experts Erlang: High level Very short development time Network Processor Flexible Bad Linux: Not completely perfect Allergic reactions … Erlang: Nothing bad  Allergic reactions … Network Processor Expensive Allergic reactions … Experiences

  11. Questions ?

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