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Comment:Refocus slice/sliver/nodes explanation to researcher's PoV.
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SHA1: d6a9583f4f19b9579bf27d7f8cd6440166657b7e
User & Date: ivan on 2012-10-07 22:03:36
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Context
2012-10-07
22:31
Keep base CN coop diagram at sight, be more explicit about additional antenna usage. check-in: 2d9ee92f63 user: ivan tags: trunk
22:03
Refocus slice/sliver/nodes explanation to researcher's PoV. check-in: d6a9583f4f user: ivan tags: trunk
18:24
Don't zoom all over the testbed architecture, introduce CN, nodes and admins. check-in: 695af32b2b user: ivan tags: trunk
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Modified script.txt from [1a6ed75dc5] to [d52f0b2d78].

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  - Avoids problems with firewalls and private networks in nodes.
  - Uses IPv6 to avoid address scarcity and incompatibility between CNs.
  - Mgmt connections are short-lived to tolerate link instability.
- Gateways are entry points to the mgmt network.
  - They help extend it over multiple CNs by external means (e.g. FEDERICA, the
    Internet).
  - They can also route the management network to the Internet.
- Researchers run experiments in slices spread over several nodes (as
  slivers). *##*

** Slices, slivers and nodes

# Axel: Reverse, from PoV of researcher: select nodes, run as slivers, gruop in slices.
- These concepts are inspired in PlanetLab.
- A slice is a management concept that groups a set of related slivers.
- A sliver holds the resources (CPU, memory, disk, bandwidth, interfaces…)

  allocated for a slice in a given node.
- A node hosts several slivers at the same time. *##*

** Node architecture
# Axel: More stress on node itself.
# Ivan: Don't zoom!!
allows the realization of these concepts.  *##* A node consists of a CD, a RD
and a rD connected to the same wired local network. *##*








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  - Avoids problems with firewalls and private networks in nodes.
  - Uses IPv6 to avoid address scarcity and incompatibility between CNs.
  - Mgmt connections are short-lived to tolerate link instability.
- Gateways are entry points to the mgmt network.
  - They help extend it over multiple CNs by external means (e.g. FEDERICA, the
    Internet).
  - They can also route the management network to the Internet.
- Experiments are configured by researchers in the server and run in nodes. *##*


** Slices, slivers and nodes
- Particularly, researchers select nodes for running experiments.
- Each node is able to run several experiments simultaneously.
- An experiment runs in a given node as a sliver which holds a share of its

  resources (CPU, memory, disk, bandwidth, interfaces…).
- Finally, related slivers are grouped in a slice for management purposes.
- All these concepts are inspired in PlanetLab. *##*


** Node architecture
# Axel: More stress on node itself.
# Ivan: Don't zoom!!
allows the realization of these concepts.  *##* A node consists of a CD, a RD
and a rD connected to the same wired local network. *##*