Resource specification update for PlanetLab and VINI

Andy BavierPrinceton University

March 16, 2010

RSpec overview

• User interface for resource allocation in SFA– Aggregates advertise available resources– Users request resources for a slice

• Recall: RSpec workflow– RSpec = GetResources([SliceHRN])– User edits RSpec– CreateSlice(SliceHRN, RSpec)

• Describe current implementation of RSpecs for PlanetLab and VINI testbeds

• Wiki: http://svn.planet-lab.org/wiki/SFAResourceSpecifications

PlanetLab RSpec

• RSpec = GetResources()• Returns a list of sites and nodes in XML

… <site id="s4"> <name>Kentucky</name> <node id="n73"> <hostname>planetlab1.netlab.uky.edu</hostname> <bw_limit units="kbps">100000</bw_limit> </node> <node id="n74"> <hostname>planetlab2.netlab.uky.edu</hostname> <bw_limit units="kbps">100000</bw_limit> </node> </site>…

PlanetLab RSpec

• User annotates RSpec with requested virtual resources• Example: request sliver with default attributes

… <site id="s4"> <name>Kentucky</name> <node id="n73"> <hostname>planetlab1.netlab.uky.edu</hostname> <bw_limit units="kbps">100000</bw_limit> </node> <node id="n74"> <hostname>planetlab2.netlab.uky.edu</hostname> <bw_limit units="kbps">100000</bw_limit> <sliver /> </node> </site>…

PlanetLab RSpec

• Request sliver with fd_fusemount capability

… <site id="s4"> <name>Kentucky</name> <node id="n73"> <hostname>planetlab1.netlab.uky.edu</hostname> <bw_limit units="kbps">100000</bw_limit> </node> <node id="n74"> <hostname>planetlab2.netlab.uky.edu</hostname> <bw_limit units="kbps">100000</bw_limit> <sliver> <vsys>fd_fusemount</vsys> </sliver> </node> </site>…

PlanetLab RSpec

• Request fd_fusemount for all slivers with the <sliver_defaults> element at top of RSpec

<RSpec type="SFA"> <network name="plc"> <sliver_defaults> <vsys>fd_fusemount</vsys> </sliver_defaults> ….

Short PlanetLab RSpec

• Rspec only contains <sliver> elements• Use nodeid attribute of <sliver> element to refer

to a node

<RSpec type="SFA"> <request name="plc"> <sliver nodeid="n73"> <vsys>fd_fusemount</vsys> </sliver> </request></RSpec>

VINI RSpec

• VINI extends the PlanetLab Rspec with network information– “slice” the physical network using virtual links

• <link> element describes the physical topology connecting VINI sites

• <vlink> element specifies a virtual link between slivers

.... <link endpoints="s11 s15"> <description>I2 Chicago -- I2 Atlanta</description> <bw_unallocated units="kbps">988000</bw_unallocated> <vlink endpoints=“n26 n18” /> </link>….

Sfatables• Allows resource owners to specify policies on

how their resources are used• Works by transforming / filtering RSpecs• Example: default bandwidth for virtual links

User submits:

<vlink endpoints=“n26 n18” />

Aggregate Manager sees:

<vlink endpoints=“n26 n18”> <kbps>10000</kbps></vlink>

sfatables -A INCOMING -- -m slice --hrn=plc.princeton.iias -- -t RESTRICT_SLICE_PROP -e link --max-link-kbps=10000

sfatables

Summary

• Deployed on VINI• Will deploy on PlanetLab soon– Coordinating with federation partners

• Happy to dig into implementation details later today or tomorrow