I’ve noticed the CDP frames are being dropped by OVS:
# ovs-dpctl dump-flows skb_priority(0),in_port(2),eth(src=52:54:00:d7:50:8e,dst=01:00:0c:cc:cc:cc),eth_type(0/0xffff), packets:0, bytes:0, used:never, actions:drop In http://benpfaff.org/~blp/ovs-fields.pdf, it mentions “OpenFlow and Open vSwitch only support LLC headers with DSAP and SSAP 0xaa and control byte 0x03, which indicate that a SNAP header follows the LLC header. In turn, OpenFlow and Open vSwitch only support a SNAP header with organization 0x000000." CDP frames use LLC/SNAP encapsulation with an organization code of (0xc). So it would appear this is why CDP frames are being dropped by OVS. Is the limitation to only support LLC/SNAP with org values of 0x0 a limitation imposed on OVS because OpenFlow doesn’t support or… ? Thanks Brian
_______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
