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Michael Brown
2b4a3efcc6
Commit 3d43789 ("[lacp] Detect and ignore erroneously looped back LACP
packets") added protection against LACP packet storms that arise when
our own transmitted packets are somehow looped back to the same port,
but does not protect against a situation in which we have two
different ports that are externally bridged to each other.
This situation is unlikely to arise in practice since a properly
configured link partner should not be both sending and forwarding LACP
packets. Triggering this situation essentially requires our two ports
to be connected to a non-LACP-capable switch, while another port on
the same switch is connected to a separate device that is sending out
LACP packets.
Guard against this situation by using the MAC address of the first
network device as the LACP system identifier, thereby allowing the
loopback detection to reject any packets that were sent from any of
our ports.
Since the system identifier is no longer unique between ports, use the
guaranteed-unique network device scope ID as the group key to indicate
that we do not support aggregation.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE network bootloader
iPXE is the leading open source network boot firmware. It provides a full PXE implementation enhanced with additional features such as:
-
boot from a web server via HTTP or HTTPS,
-
boot from an iSCSI, FCoE, or AoE SAN,
-
control the boot process with a script,
You can use iPXE to replace the existing PXE ROM on your network card, or you can chainload into iPXE to obtain the features of iPXE without the hassle of reflashing.
iPXE is free, open-source software licensed under the GNU GPL (with some portions under GPL-compatible licences).
You can download the rolling release binaries (built from the latest commit), or use the most recent stable release.
For full documentation, visit the iPXE website.