Hello, for STP/virtualization experiments I am preparing a topology of switches. To achieve this, I'd need to simulate inter-bridge links, similar to the physical concept of upstream ports to an aggregation switch.
To start with, I was thinking of a very simple topology consisting of a fat tree topology with three switches: A / \ B C However, it turned out that OVS won't allow me to stack bridges by using virtual links with the link being a tap pseudo-wire. This is what I've tried: $ ovs-vsctl add-br sovs1 $ ovs-vsctl add-br sovs1 $ ip tuntap add sovs1-to-2-tap mode tap $ ovs-vsctl add-port sovs1 sovs1-to-2-tap $ ovs-vsctl add-port sovs2 sovs1-to-2-tap ovs-vsctl: cannot create a port named sovs1-to-2-tap because a port named sovs1-to-2-tap already exists on bridge sovs1 OVS won't allow me to add the same interface to more than one bridge. Now, how to achieve what I want then? I realize I could use a virtual machine for each switch and add the virtual machine interfaces, but that seems overkill. semi-related: I noticed, OVS supports OpenFlow 1.0 only, however there are OF 1.1 proof of concept implementations for OF 1.1 in OVS on [1]. Is there a specific reason why this never was merged? [1] http://yuba.stanford.edu/git/gitweb.cgi?p=of1.1-spec-test.git;a=summary -- Arno Töll GnuPG Key-ID: 0x9D80F36D _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
