Southern Crossroads Operational Data

This page captures information for InstaGENI sites that is intended for Operators. The goal is to capture site contacts, connectivity, and VLANs.

The SoX OpenFlow Aggregate (sox-of) FlowVisor is running a newer FV version than most sites: 1.0.8. There are issues with collecting flowstats for this version of FV. The SoX OpenFlow InstaGENI rack (sox-if-of) FlowVisor is running the "standard" 0.8.17 FlowVisor version.


Site contact information for InstaGENI Southern Crossroads.

Contact Name: Russell Clark Contact Email:

Data Plane

This section captures Data plane information for Southern Crossroads detailing site topology, VLAN, Network Providers (I2/NLR/Regional) and network address information.

THIS DIAGRAM IS OUT OF DATE. SOX NOW CONNECTS TO AL2S via a 100GBPS link. Site contact will update this page. (See for some SOX port info.)

Data plane connectivity diagram

Layer 2 information

Provide layer 2 information for Circuits VLANs, plus network connection end-points, and purpose of VLAN.

*In the VLAN column, a single ID indicates that the port is an access port. A T followed by one or more IDs indicates that the port is a trunk (aka tagged) port with those VLAN IDs.

Rack Data Plane 5406

PortConnects To VLAN Config*
A1 pc1[eth1]
A2 pc1[eth2]
A3 pc1[eth3]
A4 pc2[eth1]
A5 pc2[eth2]
A6 pc2[eth3]
A7 pc3[eth1]
A8 pc3[eth2]
A9 pc3[eth3]
A10 pc4[eth1]
A11 pc4[eth2]
A12 pc4[eth3]
A13 pc5[eth1]
A14 pc5[eth2]
A15 pc5[eth3]
A24 SoX OF switch T 1750 1755 1756 1757 1758 1759

Layer 3 information

If applicable, provide layer 3 information. If not applicable, replace with "none".

Experimental VLANs

Provide a table of Experimental VLAN detailing VLAN numbers, the endpoints, its purposes and whether VLAN is OF or non-OF.

VLAN IDOF Controlled?Purpose
1750 Yes Transport to SoX
1755 Yes Transport to SoX
1756 Yes Transport to SoX
1757 Yes Transport to SoX
1758 Yes Transport to SoX
1759 Yes Transport to SoX
3555-3559 Yes Transport to AL2S ATLA via SoX for AL2S OpenFlow experiments

VLAN Translation Table


Non-VLAN Connections


Campus Connections

The control plane for the SoX rack is connected to the Georgia Tech campus network for Internet access. For purposes of the control plane, this rack should behave similarly to the rack on the Georgia Tech campus.

Public Internet

Via Georgia Tech campus network.

Control Plane

This section captures Control plane information for Southern Crossroads detailing topology and network address information.

Control plane connectivity information

  • Next-hop ISP: several, SoX includes peering with Internet2, Comcast, Google, Hurricane Electric, and 39 others
  • Identifier for border router: several
  • Identifier for port facing ISP:

Resource control subnets


Firewall/IP tables

An incoming firewall is in place. Select incoming ports have been opened to world access per the InstaGENI configuration guidelines. Outbound ports should not be limited. Contact the site administrator for additional requests.

Experiment Resources

Links to resource and network aggregates available for experimenters for Southern Crossroads:

Last modified 8 years ago Last modified on 06/02/15 08:10:16

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