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InstaGENI Aggregate

University of Wisconsin-Madison InstaGENI OpenFlow

This InstaGENI aggregate supports the GENI Aggregate Provider Agreement (10/22/2013).

InstaGENI Aggregate Overview

Aggregate Manager URL
Aggregate Manager URN
Aggregate Manager Common Name wisconsin-ig-of
Aggregate Resources An InstaGENI aggregate includes 5 Hosts (3 VM Servers and 2 dedicated PCs) that can load experimenter specified OS images. Racks also support OpenFlow topologies, usually including extensions onto campus OpenFlow networks. Rack servers are HP ProLiant DL380p Gen8.
Typical Experiments InstaGENI provides a controllable, predictable, and repeatable network environment. Experimenters can get virtual machines or dedicated PCs on which they have full "root" access, run available operating systems of their choice, and connect nodes in an arbitrary topology that can support OpenFlow.
Sample RSpecs Site Confirmation RSpecs Stitching RSpecs
Aggregate Status Restricted access to monitoring at and GMOC
Slice Authorities Recognized GENI Portal (, ProtoGENI (
Usage Policies A GENI Recommended Use Policy is available. Site should also add links here to their own usage policies.
Layer 2 Connectivity Internet2 AL2S via MOXI-CIC OpenFlow Regional Network

The following is the layout of OpenFlow switch connections for the InstaGENI Aggregate. Shown are the OpenFlow Switches:

  • InstaGENI Switch procurve2: Model: HP J8697A Switch E5406zl with VLAN 2497 (Maps to 1750 in GENI core) DPID: 09:c1:2c:59:e5:5d:0f:00

NOTE: OpenFlow resources at must be allocated at MOXI-CIC OpenFlow Regional to connect to the GENI core network.

All UW InstaGENI nodes participating in layer2 dataplane OpenFlow experiments are on the following VLAN:

2497 09:c1:2c:59:e5:5d:0f:00 Shared Meso-scale OpenFlow VLAN

RSPECS for shared mesoscale VLANs use 1751 I2 AL2S WASH (due to VLAN translation at MOXI).

Shared Meso-scale Port List

UW OpenFlow connection to the GENI core network is via port name="A19" num="19" on the procurve2 switch on VLAN 2497. This port is also used to connect to the on-campus WiMAX lab on VLAN 912, and the GENI core network on VLAN 925-929 for FIA projects.

All host eth1, eth2 and eth3 interfaces are connected to the OpenFlow switch for experimental use. Full list of port names and port numbers:

Shared Nodes interfaces (port name/port number) details:

pc1 A1/1 A2/2 A3/3 OpenVZ
pc2 A4/4 A5/5 A6/6 OpenVZ
pc3 A7/7 A8/8 A9/9 Xen

Dedicated Nodes interfaces (port name/port number) details:

Hosteth1eth2 eth3
pc4 A10/10 A11/11 A12/12
pc5 A13/13 A14/14 A15/15

AL2S OpenFlow Testing VLANs

This site currently support VLANs 946-950 as exclusive OpenFlow VLANs for AL2S. These correspond to the following DPIDs:

946 03:b2:2c:59:e5:5d:0f:00
947 03:b3:2c:59:e5:5d:0f:00
948 03:b4:2c:59:e5:5d:0f:00
949 03:b5:2c:59:e5:5d:0f:00
950 03:b6:2c:59:e5:5d:0f:00

Aggregate Management

Aggregate Operator Mike Blodgett University of Wisconsin-Madison
Resource Owner Mike Blodgett
Technical POC
Developer Links Software pages: InstaGENI, FOAM, and FlowVisor; Project page: InstaGENI Racks Project; Developer mailing list:

OpenFlow over GENI Network Stitching

This rack supports running hardware OpenFlow experiments over stitched GENI network connections. Please be advised that the following restrictions apply:

  • Network stitching on the InstaGENI rack allocates and enforces link bandwidth, which cannot be modified by OpenFlow.
  • VLANs allocated to stitched connections on the rack cannot be modified, because InstaGENI rack switches operate in hybrid mode, preventing VLAN tag rewriting.

If you require some other type of dataplane connections for your OpenFlow experiment, please contact

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