Changes between Version 8 and Version 9 of OpenFlow/CampusTopology


Ignore:
Timestamp:
04/06/11 11:18:10 (9 years ago)
Author:
Josh Smift
Comment:

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  • OpenFlow/CampusTopology

    v8 v9  
    6363 * The transvl controller can insert a flow rule to handle the translation, so every packet doesn't have to flow to the controller; but this sort of rewriting operation is typically done in the slow path on the switch, rather than at line speed. This can have a significant performance impact, so this approach is more suitable for experiments that don't have high performance requirements.
    6464
    65  * Some switch firmware will reject the tagged packets coming in on port 8, before the transvl controller sees them. In particular, the HP !OpenFlow firmware and NEC Product firmware don't seem to permit this configuration; the NEC Prototype firmware does.
     65 * Some switch firmware will reject the tagged packets coming in on port 8, before the transvl controller sees them. In particular, the HP !OpenFlow firmware doesn't seem to permit this configuration; the NEC firmware does (both Product and Prototype versions).
    6666
    6767Its main advantage is that experimenters can translate between any VLAN carried on port 7, without requiring any physical provisioning from campus network admins (e.g. when GENI tools become able to provision new inter-campus VLANs, all the way to port 7).